Form Double Opt-In

1. Double Opt-In Form Finisher

Build your form as usual using the TYPO3 Form Framework backend module. Then add the "Double Opt-In" form finisher and map your fields to the desired fields of the created Opt-In records. Also enter a Page ID where the validation plugin (see below) will be placed.

Available fields in the Opt-In model are:

• Title
• Given name
• Last name
• Email address
• Company
• Customer number

At least the email address or the customer number are mandatory fields.

The user will then get an email with a confirmation link to complete the Double Opt-In process.

2. Validation Plugin

The validation plugin will verify your Opt-In records by checking the confirmation link and mark your records as validated.

Just place the "Double Opt-In" plugin on a page you like and make sure to define this Page ID in the form finisher (see above).

If you want an e-mail to be sent to a certain address after the validation set it up in TypoScript constants.

That's it.

3. Data Privacy

You can set up a scheduler to delete all entries in the opt-in table older then a certain age. This includes entries where the user failed to opt in to their mail:

Goto System > Scheduler (admins only) and create a new Scheduled tasks of Class Table garbage collection. Chose a frequency to run the task repetetly and set up a cron job if you have none yet. Then choose for Table to clean up: tx_formdoubleoptin_domain_model_optin and the desired interval. Please note that users who received the email to double opt-in cannot opt in anymore after there opt-in record has been deleted.

More about using the scheduler in the Manual of the system extension scheduler.

It is recommended to delete all Opt-In records right after successful opt-in. For this the following Setting can be used (enabled by default): formdoubleoptin.deleteOptInRecordsAfterOptIn

Additionally, it is recommended to run the following scheduler tasks on a regular basis:

• recycler: Remove deleted records from database. Select Table Op-In (tx_formdoubleoptin_domain_model_optin).
• scheduler: Table garbage collection. Select table tx_formdoubleoptin_domain_model_optin

Upon deleting records TYPO3 only sets a flag to delete the record. Therefore, records concerning data privacy should be deleted hard from the database on a regular basis. Use the recycler task for this.

When a use registers with your form but does not use the double opt-in their data would stay in the database perpetually. Use the table garbage collection to delete all records older than 30 days (or set another date limit).

Run tests

make install
make test

Fix Rector and CGL

make install
make install-rector
make fix

Update PHPstan baseline

If you fixed a phpstan warning you can rebuild the baseline with the following command:

make install
make phpstanBaseline