8000 Error FormTypeTest : Call to a member function addConstraint() on null · Issue #20952 · symfony/symfony · GitHub
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GCalmels opened this issue Dec 16, 2016 · 5 comments
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Error FormTypeTest : Call to a member function addConstraint() on null #20952

GCalmels opened this issue Dec 16, 2016 · 5 comments
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Form Validator

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@GCalmels
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Q A
Bug report? yes
Feature request? no
BC Break report? no
Symfony version 2.8.15

I followed the doc for adding custom extensions and I had an error at new ValidatorExtension($this->validator),

The cause of this error is on the _construct of ValidatorExtension.php :
$metadata = $validator->getMetadataFor('Symfony\Component\Form\Form');
and after :
$metadata->addConstraint(new Form()); but $metadata is null
@xabbuh
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xabbuh commented Dec 16, 2016

@GCalmels I think that's an issue with the example provided in the documentation, but not related to the Symfony code. Can open a new issue on the docs repository?

@GCalmels
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8000

Well, do you know the valid example? Yes, I will open a new issue!

@xabbuh
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xabbuh commented Dec 16, 2016

The mocked ValidatorInterface would have to return a valid constraint (and you will probably have to mock some more stuff). Though not completely sure if that's really the best way to go or if we shouldn't rewrite the whole example.

@GCalmels GCalmels mentioned this issue Dec 16, 2016
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@GCalmels
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I post the solution I found :

protected function getExtensions()
    {
        $this->validator = $this->createMock(ValidatorInterface::class);
        $this->validator
            ->method('validate')
            ->will($this->returnValue(new ConstraintViolationList()));
        $this->validator
            ->method('getMetadataFor')
            ->will($this->returnValue(new ClassMetadata('Symfony\Component\Form\Form')));

        return array(
            new ValidatorExtension($this->validator)
        );
    }

@xabbuh
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xabbuh commented Dec 16, 2016

@GCalmels Thank you! Can you please also add this as a comment to symfony/symfony-docs#7270.

@OskarStark OskarStark mentioned this issue May 23, 2017
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xabbuh added a commit to symfony/symfony-docs that referenced this issue Jun 3, 2017
@xabbuh
minor #7941 added missing ClassMetadata (OskarStark)
ab67584 
This PR was merged into the 2.7 branch.

Discussion
----------

added missing ClassMetadata

This needs to be merged into the following branches too

Closes #7270
Refs symfony/symfony#20952

Commits
-------

c193035 added missing ClassMetadata
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