IsTrue

Validates that a value is ``true``. Specifically, this checks to see if

the value is exactly ``true``, exactly the integer ``1``, or exactly the

string "``1``".

Validates that a value is ``true``. Specifically, this checks if the value is

exactly ``true``, exactly the integer ``1``, or exactly the string ``"1"``.

Also see:doc:`IsFalse<IsFalse>`.

This constraint can be applied to properties (e.g. a ``termsAccepted`` property

on a registration model)or to a "getter" method. It's most powerful in

the latter case,where you can assert that a method returns a true value.

For example, supposeyou have the following method::

on a registration model)and methods. It's most powerful in the latter case,

where you can assert that a method returns a true value. For example, suppose

you have the following method::

Then you canconstrain this method with ``IsTrue``.

Then you canvalidate this method with ``IsTrue`` as follows:

..configuration-block::