Ruby-on-rails 使用 Rails 的 form_for 但在 <form> 元素上设置自定义类和属性？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/13144624/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Use Rails’ form_for but set custom classes, attributes on <form> element?
提问by Alan H.
form_forseems to ignore any 'extra' attributes like a data-fooattribute or classpassed as optionsin its second argument.
form_for似乎忽略任何“额外”属性，如data-foo属性或在其第二个参数中class传递options。
= form_for @user, {:url => 'foo', :class => 'x', 'data-bar' => 'baz' } do |f|
# ...
The output is a <form>tag with no xclass or data-barattribute.
输出是一个<form>没有x类或data-bar属性的标签。
What's the fix?
有什么解决办法？
Or, how can I grab a FormBuilderinstance without using form_for?
或者，如何在FormBuilder不使用的情况下获取实例form_for？
回答by MurifoX
Use the :htmlhash:
使用:html哈希：
= form_for @user, :html => {:class => 'x', 'data-bar' => 'baz'} do |f|
Or
或者
= form_for @user, html: {class: 'x', data: { bar: 'baz' } } do |f|
回答by zero_cool
Rails 4.0.3, Ruby 2.1.0p0 -> this worked for me =>
Rails 4.0.3，Ruby 2.1.0p0 -> 这对我有用 =>
<%= form_for(@contact, :html => {:class => 'form_height'}) do |f| %><% if @contact.errors.any? %>
回答by MSC
I had the same problem but was puzzled that another form elsewhere in my app was working fine.
我遇到了同样的问题，但很困惑我的应用程序中其他地方的另一种表单工作正常。
I realized that I had accidentally added a form_forinside another form_forwhich once removed cured the problem.
我意识到，我不小心加了的form_for另一个内部的form_for曾经除去固化的问题。
Secondly, I should add that this syntax works for me in Rails 4.2:
其次，我应该补充一点，这个语法在 Rails 4.2 中对我有用：
<%= form_for @type, html: {class: "form-horizontal"} do |f| %>
I find it preferable to the punctuation-soup of the other answers here (which were perhaps based on an older Rails version).
我发现它比这里其他答案的标点符号汤更可取（它们可能基于较旧的 Rails 版本）。
回答by doz87
I tried the above with no luck but found a solution. I'm using rails 4.1.6.
我没有运气就尝试了上述方法，但找到了解决方案。我正在使用导轨 4.1.6。
This didn't work
这没有用
= form_for @user, :html => {:class => 'x', 'data-bar' => 'baz'} %>
This did
这确实
= form_for @user, html: {:class => 'x', 'data-bar' => 'baz'} %>
notice the difference with the html option, hope this helps
注意与 html 选项的区别，希望这会有所帮助
回答by felipeclopes
On mostly helpers, the last arg is a hash of html options for the element.
在大多数助手上，最后一个 arg 是元素的 html 选项的散列。
= form_for @user, :html => {:class => 'x', 'data-bar' => 'baz'} %>
You can also check other alternatives in the documentation ActionsView::Helpers::FormHelper
您还可以在文档ActionsView::Helpers::FormHelper 中检查其他替代方案
