发布于 2015-08-27 16:37:46 | 256 次阅读 | 评论: 0 | 来源: 网络整理
The Validator is designed to validate objects against constraints. In real life, a constraint could be: “The cake must not be burned”. In Symfony, constraints are similar: They are assertions that a condition is true.
The following constraints are natively available in Symfony:
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.