你如何覆盖form_for helper中的类名？

Question

我需要添加一些类名到我的表单中。我使用Rails'form_for帮手来做到这一点。我试过添加{ :class => 'classname' }无济于事。

如何添加类到这个Rails帮助器输出？

Answer 1

试试这个：

form_for @order, :html => {:class => "foo"} 

Answer 2

对于这里的Rails 4.0是从导游的例子：

http://guides.rubyonrails.org/form_helpers.html

1.2表单辅助多哈希呼吁

form_tag(controller: "people", action: "search", method: "get", class: "nifty_form") 
# => '<form accept-charset="UTF-8" action="/people/search?method=get&class=nifty_form" method="post">' 

Answer 3

的Ruby代码以下，

<%= form_for :article, :html => { :class => "article-form" } do |form| %> 
    <p> 
     <%= form.label :title %> 
     <%= 
     form.text_field :title, 
      placeholder: "A******'s title" 
     %> 
    </p> 
    <p> 
     <%= form.label :text %> 
     <%= 
     form.text_field :text, 
      placeholder: "A******'s content" 
     %> 
    </p> 
    <p> 
     <%= form.submit %> 
    </p> 
<% end %> 

HTML输出以下，

<form class="article-form" action="/articles/new" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓"><input type="hidden" name="authenticity_token" value="BRBjb0maKb5kNbGXV0wwoLeFUV6El2la/sOwweWhyN+nEIOK2Wam5Xz8PasZtpwvmiCF7yIO8Pab/OR2uoeZQA=="> 
    <p> 
     <label for="article_title">Title</label> 
     <input placeholder="A******'s title" type="text" name="article[title]" id="article_title"> 
    </p> 
    <p> 
     <label for="article_text">Text</label> 
     <input placeholder="A******'s content" type="text" name="article[text]" id="article_text"> 
    </p> 
    <p> 
     <input type="submit" name="commit" value="Save Article"> 
    </p> 
</form>