How do I add an Rails form helper HTML attribute that does not contain a quoted value?

Question

For example, "required."

Rails chokes on any attempt to add the attribute thus:

<%= f.email_field :email, :"ng-model" => "whatever", :class => "form-control input-lg", :"required" %>

Thanks, pjmorse. I was just about to fix that. – Michael P. Nov 04 '14 at 16:52 — Michael P., Nov 04 '14 at 16:52

score 4 · Accepted Answer · answered Nov 04 '14 at 16:52

4

Just use boolean values:

<%= f.email_field :email, :"ng-model" => "whatever", :class => "form-control input-lg", :"required" => true %>

answered Nov 04 '14 at 16:52

Claudi

2

Beat me to it, I was just coming back with [the documentation link](http://api.rubyonrails.org/classes/ActionView/Helpers/TagHelper.html#method-i-content_tag). – pjmorse Nov 04 '14 at 16:53
Interestingly enough, this outputs required="required" in my HTML. Is this to be expected? – Michael P. Nov 04 '14 at 16:56
The magic behind form helpers translates the Ruby constant "true" to the appropriate attribute value according to HTML standards. See this: http://stackoverflow.com/questions/7089584/html-why-boolean-attributes-do-not-have-boolean-value – Claudi Nov 04 '14 at 16:58

score 1 · Answer 2 · answered Nov 04 '14 at 16:53

1

You must do the same as you do with class, add html_attribute => value

<%= f.email_field :email, :"ng-model" => "whatever", :class => "form-control input-lg", :"required" => true %>

answered Nov 04 '14 at 16:53

Alejandro Babio

2 Answers2