Cover of the book Symfony 5: The Fast Track

Symfony 5: The Fast Track is the best book to learn modern Symfony development, from zero to production. +300 pages showcasing Symfony with Docker, APIs, queues & async tasks, Webpack, SPAs, etc.

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13. Virtual Field Descriptions

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13. Virtual Field Descriptions

Some fields including in the various Mappers don’t rely on any actual field in the Model (e.g., _action or batch).

In order to prevent any side-effects when trying to retrieve the value of this field (which doesn’t exist), the option virtual_field is specified for these fields.

When the template is instantiated, or whenever the value of the field is required, null will be returned without prying on the Model itself.

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