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Double-Opt-In

image

When enabled, a user must confirm its email identity via confirmation before the real form shows up.

This feature is disabled by default.

form_builder:

    double_opt_in:
        
        # enable the feature
        enabled: true
        
        # redeem_mode:
        # choose between "delete" or "devalue"
        # - "delete" (default): The double-opt-in session token gets deleted, after the form submission was successful
        # - "devalue": The double-opt-in session token only gets redeemed but not deleted, after the form submission was successful. 
        redeem_mode: 'delete'
        
        expiration:
            # delete open sessions after 24 hours (default). If you set it to 0, no sessions will be deleted ever.
            open_sessions: 24
            # delete redeemed session after x hours (default 0, which means: disabled)
            redeemed_sessions: 0

Extending Double-Opt-In Form​

By default, the DoubleOptInType form type only contains a emailAddress field to keep users effort small. If you want to extend the form, you may want to use a symfony form extension.

Additional Info:

  • emailAddress is required and you're not allowed to remove it
  • Additional fields will be stored as array in the DoubleOptInSession in additionalData

Trash-Mail Protection​

The EmailChecker Validator is automatically appended to the emailAddress field. This validator only triggers, if you've configured at least one email checker service - read more about it here

Templating​

Based on given output workflow, you may want to use the double opt in data in given channel:

E-Mail Channel​

If DOI is active, the submitted mail object will receive two additional parameters:

  • _form_builder_double_opt_in_token
  • _form_builder_double_opt_in_session_email

E-Mail Data Template​

DOI information can't be rendered by default since the rendering heavily depends on your implementation. Checkout out this [part](https://github.com/open-dxp/formbuilder-bundle/blob/a9da6dada95274049d07f920999b57dfc0c9b462/templates /email/form_data.html.twig#L57-L74) in templates/email/form_data.html.twig, to show DOI data within your submitted mail data.

E-Mail Editor​

image Use the additional fields on the right side to add DOI information to the mail template editor.

Object Channel​

Currently not implemented

API Channel​

Currently not implemented