Customize errors symfony - forms

Question

There are some "best practice" in Symfony to customize form errors?
For exemple, if i would to show "Campo obligatorio" when the field is required.
1)How can i do that better way and independent from what forms call it?
2)How can i customize message 'An object with the same "%namefield" already exist.' ?
Thanks
updated
sorry, but if i try to do 'invalid' how you said me... it print me the same error
$this->setValidator('urlres', new sfValidatorString(array(
'min_length' => 6,
), array(
'min_length' => 'URL must be longer',
'required' => 'Required field',
'invalid' => 'URL exist'
)));
prints me:
* An object with the same "urlres" already exist.
updated
Felix, your solution is fantastic but it prints me this error:
"urlres: that url already exists"
Are there some way to delete "field:" ??
Thanks

Answer 1

Maybe this form post helps you:
Put the code
sfValidatorBase::setDefaultMessage('required', 'Field required');
in the "configure" of you application configuration apps/youApp/config/yourAppConfiguration.class.php.
You should be able to set the default value for every error message type this way.
If you want to set certain error messages for certain fields, think about to create a form class that defines all this and let all other forms inherit from this one.
The subclasses then only specify which fields should be displayed (and maybe custom validation logic).
You can find an example how to do this in the Admin Generator chapter of the symfony book.
This is the cleanest approach IMHO.
Edit:
If you want leave fields blank, you have to add the required => false option:
'email' => new sfValidatorEmail(array('required' => false))
Regarding the error message: This sounds like the urlres is marked as unique in the database table and the value already exists. Maybe you should check the database schema definition.
Edit 2:
To test both, length and uniqueness, you should use sfValidatorAnd and sfValidatorDoctrineUnique:
$this->setValidator('urlres', new sfValidatorAnd(
array(
new sfValidatorString(
array( 'min_length' => 6, ),
array( 'required' => 'Required field',
'min_length' => 'URL must be at least %min_length% chars long.' )
),
new sfValidatorDoctrineUnique(
array( 'model' => 'yourModel',
'column' => 'theColumn',
'primary_key' => 'thePrimaryKeyColumn',
'throw_global_error' => false),
array('invalid' => "That URL already exists")
)
));
Also your use of the invalid error code in the string validator is not correct. You set the invalid message to
URL exists but how can a string validator know this? It only checks whether the given string meets the min_length, max_length criteria or not.
Btw I assumed that you use Doctrine but I think the same validators are available for Propel.
Edit 3:
Set the option 'throw_global_error' => false. But I am not sure if that works.
You can also have a look at the source code if it helps you.

Answer 2

Let me try to help you.
You can easily customize standard form errors in configure method of your form class. Here is an example:
1)
<?php
class myForm extends BaseMyForm
public function configure(){
parent::configure();
$this->setValidator(
'my_field' => new sfValidatorString(
array('min_length'=>3, 'max_length'=>32, 'required'=>true),
array('required' => 'Hey, this field is required!')
)
);
}
2) Just change a message that has a code 'invalid'.
All you need is just find a valid message code to customize particular default messages. More info - Symfony Forms in Action: Chapter 2 - Form Validation
Updated:
And if you don't want to customize error messages in all your form classes, just create your own base validator class:
abstract class myBaseValidator extends sfValidatorBase
and there redefine default 'required' and 'invalid' messages.

Answer 3

Are there some way to delete "field:"
??
Yes: throw_global_error => true