问题显示使用Ruby on Rails 3的'file_field'的'size'属性 [英] Problem showing the 'size' attribute for a 'file_field' using Ruby on Rails 3

问题描述

我正在使用Ruby on Rails 3，并且具有这样的形式:

I am using Ruby on Rails 3 and I have a form like this:

<%= form_for(@user, ... ) do |f| %>
  ...
  <%= f.file_field :avatar, :id => "test_id", :style => "display: block", :size => "13" %>
  ...
<% end %>

当我去查看页面源代码时，这是生成的HTML代码:

When I go to see the source of the page, this is the HTML code generated:

<input type="file" style="display: block;" name="user[avatar]" id="test_id">

表示没有'size'属性.

that means the 'size' attribute there isn't.

我在Firefox，Chrome和Safari上尝试过:输出相同，但似乎一切设置正确.

I tried on Firefox, Chrome and Safari: same output, but it seems to have everything set correctly.

这是与RoR3相关的问题吗?

Is it a problem related to RoR3?

推荐答案

我实际上发现故意在此处的Rails源代码中忽略了size属性:

I actually found that the size attribute is intentionally left out of the Rails source code here:

https://github.comcom/rails/rails/blob/75366cb82dc6fa4b3dada2a450dda18496f3eddd/actionpack/lib/action_view/helpers/form_helper.rb#L734

"to_input_field_tag(" file，options.update({:size => nil})"

"to_input_field_tag("file", options.update({:size => nil})"

不知道为什么，但是很高兴听到您找到了解决方法.

Don't know why but glad to hear you found a workaround.

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