Symfony 5: The Fast Track is the best book to learn
modern Symfony development, from zero to production. +300 pages in full color showing how to
combine Symfony with Docker, APIs, queues & async tasks, Webpack, Single-Page Applications, etc.
The False constraint is deprecated since Symfony 2.7
and will be removed in Symfony 3.0. Use the
IsFalse constraint instead.
This work, including the code samples, is licensed under a
Creative Commons BY-SA 3.0