Rendering

The repeated field type is actually two underlying fields, which you can render all at once, or individually. To render all at once, use something like:

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{{ form_row(form.password) }}

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<?php echo $view['form']->row($form['password']) ?>

To render each field individually, use something like this:

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{# .first and .second may vary in your use - see the note below #}
{{ form_row(form.password.first) }}
{{ form_row(form.password.second) }}

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<?php echo $view['form']->row($form['password']['first']) ?>
<?php echo $view['form']->row($form['password']['second']) ?>

Validation

One of the key features of the repeated field is internal validation (you don't need to do anything to set this up) that forces the two fields to have a matching value. If the two fields don't match, an error will be shown to the user.

The invalid_message is used to customize the error that will be displayed when the two fields do not match each other.

first_name

type: string default: first

This is the actual field name to be used for the first field. This is mostly meaningless, however, as the actual data entered into both of the fields will be available under the key assigned to the repeated field itself (e.g. password). However, if you don't specify a label, this field name is used to "guess" the label for you.

first_options

type: array default: array()

Additional options (will be merged into `options` above) that should be passed only to the first field. This is especially useful for customizing the label:

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$builder->add('password', 'repeated', array(
    'first_options'  => array('label' => 'Password'),
    'second_options' => array('label' => 'Repeat Password'),
));

options

type: array default: array()

This options array will be passed to each of the two underlying fields. In other words, these are the options that customize the individual field types. For example, if the type option is set to password, this array might contain the options always_empty or required - both options that are supported by the password field type.

second_name

type: string default: second

The same as first_name, but for the second field.

second_options

type: array default: array()

Additional options (will be merged into options above) that should be passed only to the second field. This is especially useful for customizing the label (see first_options).

type

type: string default: text

The two underlying fields will be of this field type. For example, passing a type of password will render two password fields.

error_bubbling

default: false

data

type: mixed default: Defaults to field of the underlying object (if there is one)

When you create a form, each field initially displays the value of the corresponding property of the form's domain object (if an object is bound to the form). If you want to override the initial value for the form or just an individual field, you can set it in the data option:

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$builder->add('token', 'hidden', array(
    'data' => 'abcdef',
));

error_mapping

type: array default: empty

This option allows you to modify the target of a validation error.

Imagine you have a custom method named matchingCityAndZipCode that validates whether the city and zip code match. Unfortunately, there is no "matchingCityAndZipCode" field in your form, so all that Symfony can do is display the error on top of the form.

With customized error mapping, you can do better: map the error to the city field so that it displays above it:

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public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'error_mapping' => array(
            'matchingCityAndZipCode' => 'city',
        ),
    ));
}

Here are the rules for the left and the right side of the mapping:

• The left side contains property paths;
• If the violation is generated on a property or method of a class, its path is simply propertyName;
• If the violation is generated on an entry of an array or ArrayAccess object, the property path is [indexName];
• You can construct nested property paths by concatenating them, separating properties by dots. For example: addresses[work].matchingCityAndZipCode;
• The left side of the error mapping also accepts a dot ., which refers to the field itself. That means that any error added to the field is added to the given nested field instead;
• The right side contains simply the names of fields in the form.

invalid_message

type: string default: This value is not valid

This is the validation error message that's used if the data entered into this field doesn't make sense (i.e. fails validation).

This might happen, for example, if the user enters a nonsense string into a time field that cannot be converted into a real time or if the user enters a string (e.g. apple) into a number field.

Normal (business logic) validation (such as when setting a minimum length for a field) should be set using validation messages with your validation rules (reference).

invalid_message_parameters

type: array default: array()

When setting the invalid_message option, you may need to include some variables in the string. This can be done by adding placeholders to that option and including the variables in this option:

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$builder->add('some_field', 'some_type', array(
    // ...
    'invalid_message'            => 'You entered an invalid value - it should include %num% letters',
    'invalid_message_parameters' => array('%num%' => 6),
));

mapped

type: boolean default: true

If you wish the field to be ignored when reading or writing to the object, you can set the mapped option to false.