How to set a class attribute to a Symfony2 form input

Question

How can I set the HTML class attribute to a form  lt input gt  using the FormBuilder in Symfony2    Something like this   - gt add  birthdate    date  array         input    gt   datetime          widget    gt   single text          attr    gt  array             class    gt   calendar                   form widget form birthdate       I want this inputfield with the attribute class set to calendar

User · Answer

You can do it with FormBuilder   Add this to the array in your FormBuilder    attr   gt  array  class   gt  span2

User · Answer

You can to this in Twig or the FormClass as shown in the examples above  But you might want to decide in the controller which class your form should get  Just keep in mind to not have much logic in the controller in general        form    this- gt createForm ContactForm  class  null             attr    gt                 class    gt   my contact form

User · Answer

The answer by Acyra lead the right way if you want to set attributes inside the controller  but has many inaccuracies   Yes  you can do it directly with the FormBuilder by using the attr attribute  introduced here for the 2 1 version and here for the 2 0  to the array of options as follows   - gt add  birthdate    date  array         input    gt   datetime          widget    gt   single text          attr    gt  array  class   gt  calendar         It is not true that the  functionality is broken   It works very well   It is not true that Symfony2 applies the HTML class attribute to both the label and the input  at least from the 2 1 version    Moreover  since the attr attribute is an array itself  you can pass any HTML attribute you want to render for the field  It is very helpful if you wanna pass the HTML5 data- attributes

User · Answer

Like this         form widget form description     attr     class    form-control    rows    5    style    resize none

User · Answer

form widget form content     attr     class    tinyMCE    data-theme    advanced

User · Answer

You can add it in the options of your form class   public function configureOptions OptionsResolver  resolver         resolver- gt setDefaults array           data class    gt   AppBundle Entity MyEntity            attr    gt  array               class    gt   form-horizontal

User · Answer

You can do this from the twig template      form widget form birthdate     attr     class    calendar           From http   symfony com doc current book forms html rendering-each-field-by-hand

User · Answer

Renders the HTML widget of a given field  If you apply this to an entire form or collection of fields  each underlying form row will be rendered      render a field row  but display a label with text  foo        form row form name    label    foo        The second argument to form row   is an array of variables  The templates provided in Symfony only allow to override the label as shown in the example above   See  More about Form Variables  to learn about the variables argument

[php] How to set a class attribute to a Symfony2 form input

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