Hello,
I'm playing with symfony2 and I have a question about the validation
of a ChoiceField with a callback, as explained in
http://docs.symfony-reloaded.org/guides/validator/constraints/Choice.html.
I have a domain model class with a getter returning an array of values
to display in the form. The array looks like this:
array { 'a' => 'The value A', 'b' => 'Some B value', '100' => 'Value
100'}
When creating the ChoiceField in my form,i use this:
$this->add('myfield', array('choices' => MyDomain::getValues()));
Now, I don't know what is the best way to validate this field... I'd
like to use the getValues method with something like this:
/**
* @validation:Choice(callback = "getValues")
* @validation:NotBlank
*/
public $myfield = 'The value A';
1)
The problem is that in the array returned by getValues(), the
validator doesn't look at the keys. What is the best way to make this
work? Should I create a new getValuesKeys() method that would do a
array_keys() of getValues() result ? Or something else?
2)
In this case, when using array_keys(), the key '100' for 'Value 100'
is automatically converted to a php int. But the choice validator
expects the values to be of the same type (data from the post request
is a php string), so I would have to convert all int keys to string in
the getValuesKeys() method to make it work. Is there a better way?
3)
Another point: the default value I put in $myfield is the displayed
value ('The value A'). Is there a way to use the array keys instead
('a')? That would be useful when having a ChoiceField with lines with
different keys but similar displayed values (if displaying a tree for
example). In this situation for example:
Category1 [optgroup]
--The value A [key=1-a]
Category2 [optgroup]
--The value A [key=2-a]
I'd be very happy if someone could help me!
Thanks
Anthony
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