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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Validation Constraints Reference

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Validation Constraints Reference

The Validator is designed to validate objects against constraints. In real life, a constraint could be: “The cake must not be burned”. In Symfony2, constraints are similar: They are assertions that a condition is true.

Supported Constraints

The following constraints are natively available in Symfony2:

Basic Constraints

These are the basic constraints: use them to assert very basic things about the value of properties or the return value of methods on your object.

Number Constraints

Date Constraints

File Constraints

Other Constraints

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