how to implement input filter and validation

Question

I am a newbie in zendframework. I am using zendframework version 2.

I have a ClientForm class which is inheriting from Zend\Form\Form.

class Client extends Form
{
    public function __construct($name = null, $options = array())
    {
        if (null == $name) $name = 'ClientFrom';
        parent::__construct($name, $options);

        $this->add(array(
            'name' => 'clientName',
            'type' => 'Text'
        ));

        $this->add(array(
            'name' => 'address1',
            'type' => 'Text'
        ));
    }
}

I need to implement validation and filtering for the above form.

Rules for Validation

'clientName' => required, min = 3, max = 25

Rules for Filter

'clientName' => [a-zA-Z0-9_ ]

Questions

Can I implement this rules and filter in the same class as Form (without creating a new input filter class)
Please show me example on how to implement above rules on my above class.

Thank you.

voodoo417 · Accepted Answer · 2014-01-16 07:25:34Z

2

Try this:

    $this->add(array(
        'name' => 'clientName',
        'type' => 'text',
        'required' => true,             
        'validators' => array(
             new Validator\RegexValidator('/^#[a-zA-Z0-9_ ]$/'),
             new Validator\StringLength(array('min'=>3 ,'max' => 25))
         )             
    ));

answered Jan 16, 2014 at 7:25

voodoo417

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1 Comment

Sam Over a year ago

I'm curious, does this actually work? I can't see this going by the source alone Oo

Sam · Accepted Answer · 2014-01-16 07:05:12Z

1

There is the Zend\InputFilter-Component that you'd use for this kind of task. There's a lot of examples out there, some programatical ones like here or some configurational ones like here or here.

The later two being examples used for specific Doctrine-Validators, but you can use them for any normal Zend\InputFilter, too.

answered Jan 16, 2014 at 7:05

Sam

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3 Comments

fSazy Over a year ago

I went through several example all are abstract. Can you just implement and show me for the above code?

Sam Over a year ago

I'm at work right now and not yet in the mood. Please see the later links. They document VERY WELL how the Zend\Form component should be used. It will help you a great deal! PS: Your "Rules for Filter" is actually a "Rule for Validation" ;) Filters are things like StringTrim, StripTags, etc..

Sam Over a year ago

If the downvoters would care to explain there vote, that'd be great. The resources I gave are the most suggested way to implement InputFilters for Forms. Everything else is basically non-OOP-workarounds.

Realitätsverlust · Accepted Answer · 2014-01-16 07:00:38Z

0

I suppose you have no code yourself yet ... well.

'clientName' => required, min = 3, max = 25

This one isnt too difficult, heres some easy code ... ill write it extremely simple and readable, you can shorten the if-statements if you want:

if(!empty($clientName)) {
    if(!($clientName > 25)) {
        if(!($clientName < 3)) {
            echo "valid name!";
        }
    }
} else {
    return false;
}

'clientName' => [a-zA-Z0-9_ ]

Either you use RegEx or string-functions where you only allow these specific characters.

answered Jan 16, 2014 at 7:00

Realitätsverlust

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5 Comments

Realitätsverlust Over a year ago

I know, but i suppose that its the easiest one to understand.

fSazy Over a year ago

i can do this way for normal php project. instead zend provide some fine grained solutions for validation and filtering. so i need help on that pattern.

Realitätsverlust Over a year ago

Thats what i even wrote: "you can shorten the if-statements if you want". Ofc you can write all of it in one if statement, but if the TE asks for such a code, i suppose this code is easier than some difficult to read code.

Realitätsverlust Over a year ago

@user247947 Woops, Zend-Framework ... i completely ignored that. Got no experience with Zend. Ill retreat in shame. :>

fSazy Over a year ago

mhh... put your hand on zf and see .. its awesome!

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