• TYPO3 Explained
    9.5
  • Quick Links
    • Configuration Overview
    • Database (doctrine-dbal)
    • Digital Assets Management
    • Internationalization and Localization
    • Request Handling (Middlewares)
    • Routing - "Speaking URLs"
    • Security Guidelines
    • Site Handling
  • Introduction
    • System Overview
    • A basic installation
  • Extension Development
    • Introduction
      • Extensions and the Core
      • Notable system extensions
    • Extension Management
      • Installing extensions
      • Package Manager
    • System and Local Extensions
      • Local Extensions
      • System Extensions
      • Loading Precedence
    • Files and Locations
      • Files
      • Reserved File Names
        • composer.json
        • ext_emconf.php
        • ext_localconf.php
        • ext_tables.php
        • ext_tables.sql
          • Auto generated structure
        • ext_tables_static+adt.sql
        • ext_typoscript_constants.typoscript
        • ext_typoscript_setup.typoscript
        • ext_conf_template.txt
        • RequestMiddlewares.php
        • Routes.php and AjaxRoutes.php
        • Resources/Public/Icons/Extension.svg
        • class.ext_update.php
      • Reserved Folders
    • composer.json
      • Minimal composer.json
      • More Information
    • Declaration File (ext_emconf.php)
      • Deprecated Configuration
    • Configuration Files (ext_tables.php & ext_localconf.php)
      • ext_localconf.php
        • Should Not Be Used For
        • Should Be Used For
      • ext_tables.php
        • Should Not Be Used For
        • Should Be Used For
      • Best Practices for ext_tables.php and ext_localconf.php
    • Naming Conventions
      • Abbreviations & Glossary
      • Extension key (extkey)
      • Vendor name
      • Database table name
      • Backend module key
      • Plugin key
      • Plugin signature
      • Class name
      • Extbase
      • Note on “old” Extensions
      • Further Reading
    • Extension Configuration (ext_conf_template.txt)
      • Accessing saved options
    • Extending the TCA Array
      • Storing the Changes
        • Storing in Extensions
          • Storing in the Overrides Folder
          • Storing in ext_tables.php Files
        • Changing the TCA “on the Fly”
      • Customization Examples
        • Example 1: Extending the fe_users Table
        • Example 2: Extending the tt_content Table
      • Verifying the TCA
    • Choosing an extension key
      • About GPL and extensions
      • Security
      • Registering an extension key
    • Creating a new Extension
      • Kickstarting the Extension
    • Creating a new Distribution
      • Concept of Distributions
      • Kickstarting the Distribution
        • Configuring the Distribution Display in the EM
        • Fileadmin Files
        • Database Data
        • Distribution Configuration
        • Delivering Custom Dependencies
      • Test Your Distribution
      • More Information
    • Adding Documentation
      • Sphinx Project
      • Other Formats
        • README.rst
    • Publish Your Extension
      • Publish Your Extension on Packagist
      • Publish Your Extension on TER
      • Publish Source Code on a Public Git Hosting Platform
      • Register Your Extension for docs.typo3.org
    • Other resources

TYPO3 A-Z

  • Authentication
    • Why Use Services?
    • The Authentication Process
    • The Login Data
    • The “auth” Services API
    • The Service Chain
    • Developing an Authentication Service
    • Advanced Options
  • Autoloading
    • Autoloading Classes Since TYPO3 7.x
    • Loading Classes Without Composer Mode
    • Loading Classes With Composer Mode
    • Best Practices
  • Backend Access Control
    • Users and Groups
      • Users
      • Groups
      • The “admin” User
      • Location of Users and Groups
    • Roles
    • Access Control Options
      • Access Lists
      • Mounts
        • Page Permissions
      • User TSconfig
    • Other Options
      • Backend Users
      • Backend Groups
    • More About File Mounts
      • Paths for Local Driver Storage
      • Home Directories
    • Backend Users Module
  • Backend Layout
    • Backend Layout Video
    • Backend Layout Definition
    • Backend Layout Simple Example
    • Backend Layout Advanced Example
    • Output of a Backend Layout in the frontend
    • Extensions for the Backend Layouts
  • Backend Modules
    • Backend Interface
    • The Backend Template View
    • Backend Module API
      • Registering new Modules
      • Registering a Toplevel Module
      • $TBE_MODULES
      • Configuration With TypoScript
  • Backend Routing
    • Default Route Parameters
    • More Information
  • Backend User Object
    • Checking User Access
    • Checking Access to Current Backend Module
    • Checking Access to any Backend Module
    • Access to Tables and Fields?
    • Is “admin”?
    • Read Access to a Page?
    • Is a Page Inside a DB Mount?
    • Selecting Readable Pages From Database?
    • Saving Module Data
    • Getting Module Data
    • Getting TSconfig
    • Getting the Username
    • Get User Configuration Value
  • Bootstrapping
    • Initialization
      • 1. Define Legacy Constants
      • 2. Initialize Class Loader
      • 3. Set Request Type
      • 4. Perform base setup
      • 5. Define Class Loading Information
      • 6. Check Essential Configuration
      • 7. Register Request Handlers
      • 8. More Configuration
      • 9. Dispatch
      • 10. Initialization of the TYPO3 Backend
    • Application Context
      • Custom Contexts
      • Usage Example
  • Caching Framework
    • Quick Start for Integrators
      • Change Specific Cache Options
      • Garbage Collection Task
    • Configuration
      • Cache Configurations
      • How to Disable Specific Caches
    • Caching Framework Architecture
      • Basic Knowhow
        • About the Identifier
        • About Tags
      • Caches in the TYPO3 Core
      • Garbage Collection Task
      • Cache API
    • Cache Frontends
      • Frontend API
      • Available Frontends
        • String Frontend
        • Variable Frontend
        • PHP Frontend
    • Cache backends
      • Backend API
      • Common Options
      • Database Backend
        • InnoDB Issues
        • Options
      • Memcached Backend
        • Warning and Design Constraints
        • Options
      • Redis Backend
        • Options
      • APC Backend
      • Xcache Backend
      • Wincache Backend
      • File Backend
        • Options
      • Simple File Backend
      • PDO Backend
        • Options
      • Transient Memory Backend
      • Null Backend
    • Developer Information
      • Cache Registration and Usage
      • Cache Access Logic
  • Coding Guidelines
    • Introduction
      • The CGL as a Means of Quality Assurance
      • General Recommendations
        • Setup IDE / Editor
          • EditorConfig
    • PHP Coding Guidelines
      • PHP File Formatting
        • General Requirements for PHP Files
          • File Names
          • PHP Tags
          • Line Breaks
          • Line Length
          • Whitespace and Indentation
          • Character Set
        • File Structure
          • Namespace
          • Copyright Notice
          • Namespace Imports
          • Class Information Block
          • PHP Class
          • Optional Module Execution Code
        • PHP Syntax Formatting
          • Identifiers
          • Comments
          • Debug Output
          • Curly Braces
          • Conditions
          • Switch
          • Loops
          • Strings
          • Booleans
          • NULL
          • Arrays
          • PHP Features
          • Global Variables
          • Functions
        • Using phpDoc
          • Class Information Block
          • Function Information Block
            • Short and Long Description
      • PHP Architecture
        • Modeling Cross Cutting Concerns
          • Static Methods, static Classes, Utility Classes
            • Characteristica
            • Rationale
            • Good Examples
            • Bad Examples
            • Red Flags
          • Traits
            • Characteristica
            • Rationale
            • Good Examples
            • Bad Examples
            • Further Reading
          • Services
            • Characteristica
            • Rationale
            • Good Examples
            • Bad Examples
            • Further Reading
        • Working With Exceptions
          • Introduction
          • Exception Types
            • Typical Cases for Exceptions That are Designed to be Caught
            • Typical Cases for Exceptions That Should not be Caught
          • Typical Exception Arguments
          • Exception Inheritance
          • Extending Exceptions
          • Good Examples
          • Bad Examples
          • Further readings
        • General Links
      • Coding: Best practices
        • Accessing the Database
        • Singletons
        • Static Methods
          • Example
        • Localization
          • Defining Localized Strings
        • Unit Tests
          • Unit Test Files
          • Using Unit Tests
          • Adding Unit Tests
          • Conventions for Unit Tests
        • Handling Deprecation
        • Namespaces and Class Names of User Files
        • Hook Naming
    • JavaScript Coding Guidelines
      • Directories and Filenames
      • Format
      • More Information
    • TypeScript Coding Guidelines
      • Directories and File Names
      • Format
      • More information
    • TypoScript Coding Guidelines
      • Directory and File Names
      • Format
      • More Information
    • TSconfig Coding Guidelines
      • Directory and File Names
      • Format
      • More Information
    • Xliff Coding Guidelines
      • Directory and File Names
      • Format
      • More Information
    • Yaml Coding Guidelines
      • Directory and File Names
      • Format
      • More Information
    • reStructuredText (reST)
      • Directory and File Names
      • Format
      • More Information
  • Configuration
    • Glossary
      • Configuration syntax
      • Syntax vs semantics
      • Configuration schema
      • Configuration methods
    • Configuration syntax list
    • TypoScript Syntax
      • What Is TypoScript?
        • PHP Arrays
        • TypoScript Syntax, Object Paths, Objects and Properties
        • Note About Perceived Semantics
        • Note About the Internal Structure When Parsed Into a PHP Array
          • Credits
      • Syntax
        • Introduction
          • Example
        • Contexts
        • TypoScript syntax
          • Example:
          • object path
          • operator
          • value
          • Comments
            • Example:
          • Comment blocks
            • Rules:
            • Example:
          • Value assignment: The “=” operator
            • Rules:
          • Value modifications: The “:=” operator
            • Rules:
            • Example:
          • Code blocks: The { } signs
            • Rules:
            • Example:
          • Multi-line values: The ( ) signs
            • Rules:
            • Example:
          • Object copying: The “<” sign
            • Example:
          • References: the “=<” sign
            • Example
          • Object unsetting: The “>” Sign
            • Example:
          • Conditions: Lines starting with “[“
            • Rules:
            • Example:
        • Conditions
          • Where Conditions Can Be Used
          • The Syntax of Conditions
          • Combining Conditions
          • The Special [ELSE], [END] and [GLOBAL] Conditions
          • Where to insert conditions in TypoScript?
          • The [GLOBAL] Condition
          • Custom Conditions With Symfony Expression Language
          • Summary
        • Includes
          • Alternative, traditional Syntax
          • Conditions
          • Best practices
      • Sorting out Details
        • Parsing, Storing and Executing TypoScript
          • Parsing TypoScript
          • Storing Parsed TypoScript
          • Executing TypoScript
        • Myths, FAQ and Acknowledgements
          • Myth: “TypoScript Is a Scripting Language”
          • Myth: “TypoScript has the Same Syntax as JavaScript”
          • Myth: “TypoScript Is a Proprietary Standard”
          • Myth: “TypoScript Is very Complex”
          • Why not XML Instead?
      • The TypoScript Parser API
        • Introduction
        • Parsing Custom TypoScript
          • Root Level
          • ->COLORS
          • ->ADMINFO
            • A Case Story
        • Implementing Custom Conditions
    • YAML syntax
    • Configuration methods list
      • Further Documentation
        • TCA Reference
        • TypoScript Reference
        • TSconfig Reference
    • Extension Configuration ➜
    • Feature Toggles
      • Naming of Feature Toggles
      • Using the API as Extension Author
      • Core Feature Toggles
      • Enable / Disable Feature Toggle
    • FlexForms ➜
    • Form configuration ➜
    • Global Variables
      • Exploring Global Variables
    • $GLOBALS[‘TYPO3_CONF_VARS’]
      • File LocalConfiguration.php
      • File AdditionalConfiguration.php
      • File DefaultConfiguration.php
    • rte_ckeditor configuration ➜
    • Site configuration ➜
    • TCA ➜
    • TSconfig
      • User TSconfig
      • Page TSconfig
    • TypoScript Templates ➜
    • User Settings Configuration
      • [‘columns’] Section
      • [‘showitem’] Section
      • Extending the User Settings
      • Checking the Configuration
    • YAML API
      • YamlFileLoader
  • Constants
    • Traditional List
      • TYPO3_MODE
      • TYPO3_OS
      • PATH_thisScript
      • TYPO3_mainDir
      • PATH_typo3
      • PATH_site
      • PATH_typo3conf
      • TYPO3_version
      • TYPO3_branch
    • Base Constants
      • This Version, Branch and Copyright
      • TYPO3 External Links
      • String Constants
      • Security Related Constant
      • Operating System Identifier
      • Service Error Constants
      • Filetypes
      • HTTP Status Codes
  • Content Elements & Plugins
    • Introduction
      • What are content elements?
      • What are plugins?
      • Editing
      • Customizing
      • Creating new content elements
    • Create Custom Content Elements
      • Prerequisites
      • Use an extension
      • 1. Register the content element
      • 2. Configure fields
      • 3. Configure the frontend template
      • 4. Optional: configure custom backend preview
      • 5. Optional: extend tt_content
      • 6. Optional: use data processors
    • Create Plugins
    • Add Elements to the Content Element Wizard
      • Add Your Plugin to Different Tab
    • FlexForms
      • Example Use Cases
      • How it Works
      • Steps to Perform (Extension Developer)
      • More Examples
        • Select Field
        • Populate a select Field with a PHP Function (itemsProcFunc)
        • Display Fields Conditionally (displayCond)
        • How to Read FlexForms From an Extbase Controller Action
        • How to Read and Write FlexForms From PHP
        • How to Access FlexForms From TypoScript
        • How to Access FlexFroms From Fluid
      • Steps to Perform (Editor)
      • Credits
    • T3DataStructure
      • Elements
        • Elements Nesting Other Elements (“Array” Elements)
        • Elements Containing Values (“Value” Elements)
        • Example
      • Sheet References
        • Example
      • Parsing a Data Structure
    • Backend Layout
      • Backend Layout Video
      • Backend Layout Definition
      • Backend Layout Simple Example
      • Backend Layout Advanced Example
      • Output of a Backend Layout in the frontend
      • Extensions for the Backend Layouts
    • Best practices
  • Context API and Aspects
    • Introduction
      • DateTime Aspect
        • Example
      • Language Aspect
        • Example
      • User Aspect
        • Example
      • Visibility Aspect
        • Example
      • Workspace Aspect
        • Example
  • Context Sensitive Help (CSH)
    • The $TCA_DESCR Array
      • Keys in $TCA_DESCR
    • The Language Files for CSH
      • Syntax for Type Keys
      • Extending an Existing Label
    • Implementing CSH
      • For new Tables and Fields
      • Adding CSH for Fields Added to Existing Tables
      • For Modules
  • Database
    • Introduction
      • Doctrine-Dbal
      • Understanding Doctrine-Dbal and Doctrine-Orm
      • Low-level and High-Level Database Calls
      • Credits
    • Configuration
    • Database Structure
      • The “pages” Table
      • Other Tables
    • Upgrade Table and Field Definitions
      • The ext_tables.sql Files
    • Basic CRUD
      • INSERT a Row
      • SELECT a Single Row
        • SELECT Multiple Rows With Some WHERE Magic
      • UPDATE Multiple Rows
      • DELETE a Row
    • Class Overview
    • ConnectionPool
      • Pooling
    • QueryBuilder
      • select() and addSelect()
        • Default Restrictions
      • count()
      • delete()
      • update() and set()
      • insert() and values()
      • from()
      • where(), andWhere() and orWhere()
      • join(), innerJoin(), rightJoin() and leftJoin()
      • orderBy() and addOrderBy()
      • groupBy() and addGroupBy()
      • setMaxResults() and setFirstResult()
      • add()
      • getSQL()
      • getParameters()
      • execute()
      • expr()
      • createNamedParameter()
      • quoteIdentifier() and quoteIdentifiers()
      • escapeLikeWildcards()
      • getRestrictions(), setRestrictions(), resetRestrictions()
    • Connection
      • insert()
      • bulkInsert()
      • update()
      • delete()
      • truncate()
      • count()
      • select()
      • lastInsertId()
      • createQueryBuilder()
    • ExpressionBuilder
      • Junctions
      • Comparisons
      • Aggregate Functions
      • Various Expressions
        • TRIM
        • LENGTH
    • RestrictionBuilder
      • Rationale
      • Main Construct
      • Restrictions
      • QueryRestrictionContainer
      • Examples
    • Statement
      • fetch()
      • fetchAll()
      • fetchColumn()
      • rowCount()
      • Re-use Prepared Statement()
    • QueryHelper
      • parseOrderBy()
      • parseGroupBy()
      • parseTableList()
      • parseJoin()
      • stripLogicalOperatorPrefix()
      • getDateTimeFormats()
      • quoteDatabaseIdentifiers()
    • Migrating from TYPO3_DB
      • Compare Raw Queries
      • enableFields() and deleteClause()
      • From ->exec_UDATEquery() to ->update()
      • Result Set Iteration
      • sql_insert_id()
      • fullQuoteStr()
      • ext_tables.sql
      • TCA and TypoScript
      • Extbase QueryBuilder
    • Various Tips and Tricks
  • Digital Assets Management (FAL)
    • Introduction
    • Basic Concepts
      • Storages and Drivers
      • Files and Metadata
      • File References
    • Architecture
      • Overview
      • Folders
        • Processed Files
        • Migrated Files
      • Database Structure
        • sys_file
        • sys_file_metadata
        • sys_file_reference
        • sys_file_processedfile
        • sys_file_collection
        • sys_file_storage
        • sys_filemounts
      • Components
        • Files and Folders
        • File References
        • Storage
        • Drivers
        • The File Index
        • Collections
        • Services
      • Signals and Slots
        • \TYPO3\CMS\Core\Resource\ResourceStorage
        • \TYPO3\CMS\Core\Resource\ResourceFactory
        • \TYPO3\CMS\Core\Resource\Index\FileIndexRepository
        • \TYPO3\CMS\Core\Resource\Index\MetaDataRepository
        • \TYPO3\CMS\Core\Resource\Service\FileProcessingService
    • Administration
      • Permissions
        • System Permissions
        • File Mounts
        • User Permissions
          • User Permissions per Storage
          • User Permissions Details
        • Default Upload Folder
        • Frontend Permissions
      • File Storages
      • Maintenance
        • Scheduler Tasks
        • Processed Files
    • Using FAL
      • Using FAL in the Frontend
        • TypoScript
        • Fluid
          • The ImageViewHelper
          • Get File Properties
          • FLUIDTEMPLATE
      • TCA Definition
      • The ResourceFactory Class
        • Getting the Default Storage
        • Getting any Storage
      • Working With Files, Folders and File References
        • Getting a File
        • Copying a File
        • Adding a File
        • Creating a File Reference
          • In the Backend Context
          • In the Frontend Context
        • Getting Referenced Files
        • Listing Files in a Folder
      • Working With Collections
      • Searching for Files
  • Directory Structure
  • Enumerations
    • How To Use Enumerations
      • Create an Enumeration
      • Use an Enumeration
      • Exceptions
      • Implement Custom Logic
  • Environment
    • getProjectPath()
    • getPublicPath()
    • getVarPath()
    • getConfigPath()
    • getLabelsPath()
  • Error and Exception Handling
    • Configuration
    • Error Handler
    • Production Exception Handler
    • Debug Exception Handler
    • Examples
      • Debugging and development setup
      • Production setup
      • Performance setup
    • How to extend the error and exception handling
      • Example Debug Exception Handler
  • Hooks and Signals
    • The Concept of “Hooks” and “Signals”
      • Hooks and Signals vs. XCLASS Extensions
      • Proposing Hooks or Signals
      • Using Hooks
      • Using Signals
      • Finding Signals
    • Hook Configuration
      • $GLOBALS[‘TYPO3_CONF_VARS’][‘EXTCONF’]
      • $GLOBALS[‘TYPO3_CONF_VARS’][‘SC_OPTIONS’]
      • $GLOBALS[‘TYPO3_CONF_VARS’][‘TBE_MODULES_EXT’]
    • Creating Hooks
      • Using TYPO3CMSCoreUtilityGeneralUtility::makeInstance()
      • Using with TYPO3CMSCoreUtilityGeneralUtility::callUserFunction()
  • Extension Scanner
    • Introduction
    • Quick Start
    • Goals and non Goals
    • Limits
    • Extension Authors
    • Project Developers
    • Core Developers
      • Connection to Changelog RST Files
      • Extension Scanner PHP Configuration
  • Flash Messages
    • Flash Messages API
      • Flash Messages Severities
    • Flash Messages Renderer
    • Flash Messages in Extbase
    • JavaScript-based Flash Messages (Notifications API)
  • FormEngine
    • Introduction
    • Main Rendering Workflow
    • Data Compiling
      • Data Groups and Providers
      • Extending Data Groups With Own Providers
      • Adding Data to Data Array
    • Rendering
      • Class Inheritance
      • NodeFactory
      • Result Array
      • Node Expansion
      • Add fieldControl Example
  • Form Protection Tool
    • Usage in the Backend
    • Usage in the Install Tool
  • HTTP Request Library / Guzzle / PSR-7
    • Basic Usage
  • Icon API
    • Registration
      • IconProvider
    • Use Icons in Your Code
      • The PHP Way
      • The Fluid ViewHelper
      • The JavaScript way
    • Available Icons
      • Install Styleguide Extension
      • Use TYPO3.Icons
  • Internationalization and Localization
    • Introduction
      • Label Access in PHP
    • Managing Translations
      • The TYPO3 Translation Server
      • Fetching Translations of TER Extensions
        • Feature toggle (9 LTS only)
      • Translating Locally
      • Custom Translations
      • Custom Languages
      • Custom Translation Servers
    • XLIFF Format
      • Basics
      • File Locations and Naming
  • JavaScript in TYPO3 Backend
    • AJAX in TYPO3 Backend
      • In-depth Presentation
        • Client-Side Programming
        • Server-side Programming
        • Different Content Formats
          • Plain Text
          • XML
          • JSON
      • Developing With AJAX in the TYPO3 Backend
    • RequireJS in the TYPO3 Backend
      • Credits
        • Use RequireJS in Your Own Extension
        • Dependency Handling
        • Loading Your Own or Other RequireJS Modules
        • Shim Library to Use it as Own RequireJS Modules
  • Linkbrowser
    • Linkbrowser API
      • Description
        • Tab registration
        • Handler implementation
        • Hooks
    • LinkHandler Api
      • LinkHandler PageTSconfig Options
        • Example: news records from one storage pid
      • LinkHandler TypoScript Options
        • Example: news records displayed on fixed detail page
  • Locking API
    • Locking Strategies
      • Capabilities
      • Priorities
      • Examples
    • Usage in the Core
    • Extend Locking in Extensions
    • Caveats
      • FileLockStrategy & NFS
      • Multiple Servers & Cache Locking
    • Related Information
  • Logging Framework
    • Quickstart
      • Instantiate a Logger for the Current Class
      • Log
      • Set Logging Output
    • Logger
      • Instantiation
      • Log() Method
      • Shorthand Methods
    • Configuration of the Logging System
      • Writer Configuration
      • Processor Configuration
    • The LogRecord Model
    • Log Writers
      • Built-in Log Writers
        • DatabaseWriter
        • FileWriter
        • PhpErrorLogWriter
        • SyslogWriter
      • Custom Log Writers
    • Log Processors
      • Built-in Log Processors
        • IntrospectionProcessor
        • MemoryUsageProcessor
        • MemoryPeakUsageProcessor
        • WebProcessor
      • Custom Log Processors
  • Mail API
    • Configuration
      • mail
      • smtp
      • sendmail
      • mbox
      • <classname>
    • How to Create and Send Mails
    • How to Add Attachments
    • How to Add Inline Media
    • How to Set and Use a Default Sender
    • SwiftMailer Documentation
  • Namespaces
    • Core Example
    • Usage in Extensions
    • Namespaces in Extbase
    • Namespaces for Test Classes
    • Creating Instances
    • include and required
    • References
  • Page Types
    • Create new Page Type
  • Password Hashing
    • Introduction
    • Basic Knowledge
    • How does it look like?
    • Configuration
    • Configuration Options
    • Available Hash Algorithms
      • Argon2i
      • bcrypt
      • PBKDF2
      • phpass
      • blowfish
      • md5salt
    • PHP API
      • Creating a Hash
      • Checking a Password
      • Adding a new hash mechanism
  • Request Handling
    • Basic concept
    • TYPO3 implementation
    • Middlewares
    • Middleware examples
      • Returning a custom response
      • Enriching the request
      • Enriching the response
    • Configuring middlewares
    • Debugging
  • Rich Text Editors (RTE)
    • Rich Text Editors in the TYPO3 Backend
      • Introduction
      • Plugging a RTE
        • API for Rich Text Editors
    • Transformations
      • Introduction
        • Hybrid Modes
          • In Database
          • In RTE
        • Configuration
        • Where Transformations are Performed
      • Process Illustration
        • Step 1: The RTE Applications
        • Step 2: The RTE-specific Transformation
        • Step 3: The Main Transformation
        • Step 4: The Database
        • Step 5: Rendering the Website
        • Step 6: The Website
        • Content Examples
      • Transformation Overview
        • Transformation Filters
        • Meta Transformations
      • Custom Transformations API
        • Custom Transformation Key
        • Registering the Transformation Key in the System
        • Code Listing
    • Historical Perspective on RTE Transformations
      • Properties and Transformations
      • RTE Transformations in Content Elements
        • Conclusion
  • Routing - “Speaking URLs” in TYPO3
    • Introduction to Routing
      • What is Routing?
      • Key Terminology
      • Routing in TYPO3
      • Prerequisites
      • Tips
        • Use imports in yaml files
    • Page based Routing
      • Configuration
      • Upgrading
    • Advanced Routing Configuration (for Extensions)
      • Enhancers
        • Simple Enhancer
        • Plugin Enhancer
        • Extbase Plugin Enhancer
        • Page Type Decorator
      • Aspects
        • StaticValueMapper
        • LocaleModifier
        • StaticRangeMapper
        • PersistedAliasMapper
        • PersistedPatternMapper
      • Behind the Scenes
    • Extending Routing
      • Writing custom aspects
      • Writing custom enhancers
      • Manipulating generated slugs
    • Collection of various routing examples
      • EXT: News
      • EXT: Blog with custom Aspect
        • Archive
        • Posts by Author
        • Category pages
        • Blog Feeds
        • Blog Posts
        • Posts by Tag
        • BlogStaticDatabaseMapper
        • Usage with imports
      • Full project example config
      • REST API with Custom Enhancer
      • EXT: DpnGlossary
  • Security Guidelines
    • Introduction
      • Reporting a security issue
      • Target audience
    • The TYPO3 Security Team
      • Report a security issue
      • Review of your extension
      • Incident handling
        • TYPO3 core system
        • TYPO3 extensions
    • General Information
      • TYPO3 versions and lifecycle
      • Difference between core and extensions
      • Announcement of updates and security fixes
      • Security bulletins
        • Public Service Announcements
        • Common Vulnerability Scoring System (CVSS)
    • Types of Security Threats
      • Information disclosure
      • Identity theft
      • SQL injection
      • Code injection
      • Authentication bypass
      • Cross Site Scripting (XSS)
      • Cross Site Request Forgery (XSRF)
    • General Guidelines
      • Secure Passwords
      • Operating System and Browser Version
      • Communication
      • React Quickly
      • Keep the TYPO3 Core up-to-date
      • Keep TYPO3 Extensions Up-to-date
      • Use Staging Servers for Developments and Tests
    • Guidelines for System Administrators
      • Role definition
      • General rules
      • Integrity of TYPO3 packages
      • File/directory permissions
      • Restrict access to files on a server-level
        • Verification of access restrictions
        • Apache and Microsoft IIS web servers
        • NGINX web servers
      • Directory indexing
      • Database access
        • Secure passwords and minimum access privileges with MySQL
        • Database not within web document root with SQLite
        • Disallow external access
        • Database administration tools
      • Encrypted client/server communication
        • Data classification
        • Frontend
        • Backend
        • Drop FTP
      • Other services
      • Further actions
        • Hosting environment
        • Security-related PHP settings
        • Events in log files
        • Defending against Clickjacking
    • Guidelines for TYPO3 Integrators
      • Role definition
      • General rules
      • Install Tool
        • TYPO3 core updates
      • Encryption key
      • Global TYPO3 configuration options
        • cookieSecure
        • displayErrors
        • devIPmask
        • enabledBeUserIPLock
        • fileDenyPattern
        • lockIP
        • lockSSL
        • IPmaskList
        • trustedHostsPattern
        • warning_email_addr
        • warning_mode
      • Security-related warnings after login
      • Reports and Logs
      • Users and access privileges
        • Backend
        • Frontend
      • TYPO3 extensions
        • Stable and reviewed extensions
        • Executable binaries shipped with extensions
        • Remove unused extensions and other code
        • Low-level extensions
        • Check for extension updates regularly
        • Security-related core extensions
        • Other security-related extensions
      • TypoScript
        • SQL injection
        • Cross-site scripting (XSS)
        • External file inclusion
        • Clickjacking
        • Integrity of external JavaScript files
        • Risk of externally hosted JavaScript libraries
      • Content elements
    • Guidelines for Editors
      • Role definition
      • General rules
      • Backend access
        • Username
        • Password
        • Administrator privileges
        • Notify at login
        • Lock to IP address(es)
      • Restriction to required functions
      • Secure connection
      • Logout
    • Backup Strategy
      • Components included in the backups
      • Time plan and retention time
      • Backup location
      • Further considerations
    • Detect, Analyze and Repair a Hacked Site
      • Detect a hacked website
        • Manipulated frontpage
        • Malicious code in the HTML source
        • Embedded elements in the site’s content
        • Unusual traffic increase or decrease
        • Reports from visitors or users
        • Search engines or browsers warn about your site
        • Leaked credentials
      • Take the website offline
      • Analyze
      • Repair/restore
      • Further actions
  • SEO
    • MetaTag API (SEO)
      • Using the Meta Tag API
      • Creating Your Own MetaTagManager
      • TypoScript and PHP
    • PageTitle API
      • Create Your Own PageTitleProvider
      • Define Priority of PageTitleProviders
    • XML Sitemap
      • Installation
      • How to Access Your XML Sitemap
      • XmlSitemapDataProviders
      • Create Your Own XmlSitemapDataProvider
  • Services
    • Introduction
      • Two Reasons to Use Services
      • 1. Freedom of Implementation
      • 2. Extend Functionality with Extensions
    • Using Services
      • Service Precedence
      • Simple Use
      • Use With Subtypes
      • Calling a Chain of Services
    • Configuration
      • Registration Changes
      • Service Configuration
      • Service Type Configuration
    • Developer’s Guide
      • Introducing a New Service Type
      • Implementing a Service
        • Service Registration
        • PHP Class
      • Service API
        • Service Implementation
        • Getter Methods for Service Information
        • Error Handling
        • General Service Functions
        • I/O Tools
        • I/O Input and I/O Output
      • Service-related API
        • \TYPO3\CMS\Core\Utility\ExtensionManagementUtility
        • \TYPO3\CMS\Core\Utility\GeneralUtility
  • Session Storage Framework
    • Database Storage Backend
    • Using Redis to Store Sessions
    • Writing Your Own Session Storage
    • References
  • Site Handling
    • Basics
      • Site Configuration Storage
      • The Configuration File
        • site identifier
        • rootPageId
        • base
        • languages
        • errorHandling
        • routes
        • routeEnhancers
    • Creating a new Site
    • Base Variants
      • Example
      • Properties
        • typo3.version
        • typo3.branch
        • typo3.devIpMask
        • applicationContext
      • Functions
        • ip
        • compatVersion
        • like
        • getenv
    • Adding Languages
      • Configuration Properties
        • languageId
        • title
        • navigationTitle
        • base
        • baseVariants
        • locale
        • iso-639-1
        • hreflang
        • direction
        • typo3Language
        • flagIdentifier
        • fallbackType
        • fallbacks
    • Error Handling
      • Properties
        • errorCode
        • errorHandler
        • errorFluidTemplate
        • errorFluidTemplatesRootPath
        • errorFluidPartialsRootPath
        • errorFluidLayoutsRootPath
        • errorContentSource
        • errorPhpClassFQCN
    • Writing a Custom Page Error Handler
    • Static Routes
      • StaticText
      • TYPO3 URL (t3://)
    • Using Environment Variables in Site Configuration
    • Using Site Configuration in TypoScript
      • getText
      • FLUIDTEMPLATE
    • Using Site Config in Conditions
      • TypoScript Examples
      • EXT:form Examples
    • CLI Tools for Site Handling
    • PHP API: Accessing Site Configuration
      • Accessing the Current Site Object
      • Finding a Site Object
      • The Site Object
      • The SiteLanguage Object
      • Pages Without Site Configuration
    • Extending Site Configuration
      • Adding Custom / Project Specific Options to Site Configuration
      • Extending the Form / GUI
  • Soft References
    • Default soft reference parsers
      • substitute
      • notify
      • images
      • typolink
      • typolink_tag
      • ext_fileref
      • email
      • url
    • User-defined Soft Reference Parsers
  • Command Line Dispatcher (Symfony)
    • Creating a new Symfony Command in Your Extension
    • Running the Command From the Command Line
    • Running the Command From the Scheduler
  • Symfony Expression Language
    • Within TypoScript Conditions
      • Registering new Provider within Extension
      • Implement Provider within Extension
      • Additional variables
      • Additional functions
  • System Categories
    • Using Categories
      • Managing Categories
      • Making a Table Categorizable
    • Using Categories in FlexForms
    • System Categories API
    • Category Collections
    • Usage With TypoScript
  • System Collections
    • Record Collections
    • File Collections
    • Collections API
    • Example
  • System Log
  • System Registry
    • The Registry Table (sys_registry)
    • The registry API
      • Examples
  • TCE (TYPO3 Core Engine) & DataHandler
    • Introduction
      • Database
      • Files
    • Database: DataHandler Basics (Formerly Known as TCEmain)
      • Commands Array
        • Command Keywords and Values
        • Examples of Commands:
      • Data Array
        • Examples of Data Submission
      • Clear Cache
        • Hook for Cache Post-processing
      • Flags in DataHandler
    • Using DataHandler in Scripts
      • DataHandler Examples
        • Submitting Data
        • Executing Commands
        • Clearing Cache
        • Complex Data Submission
        • Both Data and Commands Executed With Alternative User Object
      • Error handling
    • The “/record/commit” Route
    • File Functions Basics
      • Files Array
        • Command Keywords and Values
    • The “tce_file.php” API
  • Testing
    • History
      • Introduction
      • 2009
      • 2012
      • 2013
      • 2014
      • 2015
      • 2016
      • 2017
      • 2018
      • 2019
    • Core testing
      • Introduction
      • System dependencies
      • Quick start
      • Overview
      • A runTests.sh run
      • Examples
      • Debugging
    • Extension testing
      • Introduction
      • Scope
      • General strategy
      • Testing enetcache
        • Starting point
        • Preparing composer.json
        • runTests.sh and docker-compose.yml
        • Travis CI
      • Testing styleguide
        • Basic setup
        • Functional testing
        • Acceptance testing
        • travis-ci
    • Project testing
      • Introduction
      • Project site-introduction
      • Local acceptance testing
      • Travis CI
      • Summary
    • Writing unit tests
      • Introduction
      • When to unit tests
      • When not to unit tests
      • Unit test conventions
      • Keep it simple
      • Extending UnitTestCase
      • General hints
      • A casual data provider
      • Mocking
      • Static dependencies
      • Exception handling
    • Writing functional tests
      • Introduction
      • Overview
      • Simple Example
      • Extending setUp
      • Loaded extensions
      • Database fixtures
      • Asserting database
      • Loading files
      • Setting TYPO3_CONF_VARS
      • Frontend tests
    • Writing acceptance tests
      • Introduction
      • Set up
      • Backend login
      • Frames
      • PageTree
      • ModalDialog
    • FAQ
      • Introduction
      • Why do you docker everything?
      • Docker consumes too much hard disk
      • Why do you need runTests.sh?
      • Is a generic runTests.sh available?
      • Why don’t you use runTests.sh in bamboo?
      • Why do you not use native PHP on Travis CI?
      • Functional tests set up own instances in typo3temp?
      • Can I provide more hardware for bamboo?
      • Testing is slow on macOS
      • Can i run tests with Windows?
  • Upgrade Wizards
    • The Concept of Upgrade Wizards
      • Best Practice
      • Examples
    • Creating Generic Upgrade Wizards
      • Marking wizard as done
      • Generating Output
      • Registering wizard
      • Executing wizard
    • class.ext_update.php
  • Versioning and Workspaces
    • Frontend Challenges in General
      • Summary
    • Frontend Implementation Guidelines
    • Frontend Scenarios Impossible to Preview
    • Backend Challenges
      • Workspace-related API for Backend Modules
    • Backend Module Access
    • Detecting Current Workspace
    • Using DataHandler With Workspaces
    • Moving in Workspaces
    • Persistence In-Depth Scenarios
      • Placeholders
      • Overview
      • Scenario: Create new page
      • Scenario: Modify record
      • Scenario: Delete record
      • Scenario: Move record to different page
      • Scenario: Create new record on existing page
      • Scenario: Create new record on page that is new in workspace
      • Scenario: Discard record workspace modifications
      • Scenario: Create new record localization
      • Scenario: Create new record, then move to different page
      • Scenario: Create new record, then delete
  • XCLASSes (Extending Classes)
    • Introduction
    • How Does it Work?
    • Limitations
    • Declaration
    • Coding Practices

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  • Sitemap
  • About This Manual
    • Intended Audience
    • Code examples
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    • Credits
    • Dedication
  • Link Targets
 
TYPO3 Explained
  • Docs »
  • Digital Assets Management (FAL) »
  • Architecture
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Next Previous

Architecture¶

This chapter provides an in-depth look into the architecture of FAL.

  • Overview
  • Folders
    • Processed Files
    • Migrated Files
  • Database Structure
    • sys_file
    • sys_file_metadata
    • sys_file_reference
    • sys_file_processedfile
    • sys_file_collection
    • sys_file_storage
    • sys_filemounts
  • Components
    • Files and Folders
    • File References
    • Storage
    • Drivers
    • The File Index
    • Collections
    • Services
  • Signals and Slots
    • \TYPO3\CMS\Core\Resource\ResourceStorage
    • \TYPO3\CMS\Core\Resource\ResourceFactory
    • \TYPO3\CMS\Core\Resource\Index\FileIndexRepository
    • \TYPO3\CMS\Core\Resource\Index\MetaDataRepository
    • \TYPO3\CMS\Core\Resource\Service\FileProcessingService
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