Symfony forms : Collect array of data

Question

I need to collect array of data via input fields. For example:

<input name="customer_name" type="text">
<input name="customer_emails[]" type="text">
<input name="customer_emails[]" type="text">
<input name="customer_emails[]" type="text">

How to render this type of form in Symfony2 form builder?

Documentation says:

$builder->add('emails', 'collection', array(
    // each item in the array will be an "email" field
    'type'   => 'email',
    // these options are passed to each "email" type
    'options'  => array(
        'required'  => false,
        'attr'      => array('class' => 'email-box')
    ),
));

It is not clear to me where I should provide the number of email fields I want.

kix · Accepted Answer · 2014-08-11 07:51:32Z

3

The exact number of collection fields is determined by the model that's bound to the form. Take a closer look at the last paragraph in Symfony's collection field type documentation:

In both cases, no input fields would render unless your emails data array already contained some emails.

In this simple example, it's still impossible to add new addresses or remove existing addresses. Adding new addresses is possible by using the allow_add option (and optionally the prototype option) (see example below). Removing emails from the emails array is possible with the allow_delete option.

Thus, if you need to accept three email addresses, make sure that the data that's bound to the form has the according values set up, or consider 'allow_add' option of the collection type.

answered Aug 11, 2014 at 7:51

kix

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Comments

Jovan Perovic · Accepted Answer · 2014-08-11 09:26:21Z

2

What @kix said was absolutely correct.

However, if you want to offer initial number of fields you could:

$object = ... # Some object... 
$object->setEmail(array("", "", "")); # for example, 3 addresses
$form = $this->createForm(new SomeFormType(), $object);

####
# REST OF YOUR LOGIC
####

$view = $form->createView();

answered Aug 11, 2014 at 9:26

Jovan Perovic

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