Feature: #107488 - Extensible scheduler task timing options 

Description 

The scheduler task timing configuration has been migrated to the single TCA execution_details field, which is of type json. This field has now been enhanced to allow extensions to customize the corresponding timing-related fields, particularly the frequency field with custom cron expressions. This is achieved through the new overrideFieldTca option, available in the TCA field configuration.

Previously, frequency options were only configurable through the global $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['frequencyOptions'] array, which has been moved to the TCA configuration to provide better extensibility and consistency with TYPO3's configuration patterns, see Breaking: #107488 - Scheduler frequency options moved to TCA.

Enhanced Customization Options 

Field-level Configuration Extensions can now override any timing-related field configuration using the overrideFieldTca mechanism in the execution_details field.

Available fields:

• Frequency field: frequency
• Running type field: runningType
• Parallel execution settings: multiple
• Start/End date fields: start and end

Example Usage 

Extensions can now add custom frequency options by creating a TCA override file:

// EXT:my_extension/Configuration/TCA/Overrides/tx_scheduler_task.php

$GLOBALS['TCA']['tx_scheduler_task']['columns']['execution_details']['config']['overrideFieldTca']['frequency']['config']['valuePicker']['items'][] = [
    'value' => '0 2 * * *',
    'label' => 'LLL:EXT:my_extension/Resources/Private/Language/locallang.xlf:daily_2am',
];

Extensions can now add a description:

// EXT:my_extension/Configuration/TCA/Overrides/tx_scheduler_task.php

$GLOBALS['TCA']['tx_scheduler_task']['columns']['execution_details']['config']['overrideFieldTca']['multiple'] = [
    'description' => 'LLL:EXT:my_extension/Resources/Private/Language/locallang.xlf:multiple.description',
];

Related Changes 

See Breaking: #107488 - Scheduler frequency options moved to TCA for information about the breaking change regarding the removal of the global frequencyOptions configuration.

Impact 

This enhancement provides a more flexible and extensible way to configure scheduler task timing options, allowing extensions to seamlessly integrate custom timing configurations while maintaining consistency with TYPO3's configuration patterns.