Symfony2 invalid form without errors

Question

I\'ve got a problem with a Symfony2 generated CRUD form. (With MongoDB Documents, but I do not think that this is related)

In my controller\'s createAction() method,

Answer 1

To debug a form, use $form->getErrorsAsString() instead of $form->getErrors().

$form->getErrorsAsString() should only be used to debug the form...it will contain the errors of each child elements which is not the case of $form->getErrors().

As Peter mentions, $form->getErrors() will not return the sum of all the errors of the children forms.

To understand how a form can be invalid and have a getErrors() returning an empty array, you can have a look at the isValid() method of the symfony form class. As you can see, there are 2 cases where the form is not valid, the first one test for the general form, and the second case test for each child elements.

public function isValid()
{
    //...

    //CASE I : IF CHILD ELEMENTS HAVE ERRORS, $this->errors WILL CONTAIN
    //THE ERROR ON THE CHILD ELEMENT AND NOT ON THE GENERAL 'errors' FIELD 
    //ITSELF

    if (count($this->errors) > 0) {
        return false;
    }

    //CASE II: AND THIS IS WHY WE ARE TESTING THE CHILD ELEMENTS AS WELL
    //TO CHECK WHETHER THERE ARE VALID OR NOT

    if (!$this->isDisabled()) {
        foreach ($this->children as $child) {
            if (!$child->isValid()) {
                return false;
            }
        }
    }

    return true;
}

Therefore each form child can contain an error, but $form->getErrors() itself won't return all the errors. Considering a form that has many child elements, you will generally have $form->getErrors() with a CSRF error if the CSRF is not correct.