举个例子,在表单中有这样的内容:
<dl> <dt> <%= f.label :subject %> </dt> <dd> <%= f.text_field :subject %> </dd> </dl>
在浏览器中显示成:
■Subject
(※注:■由CSS生成)
如果对表单进行验证,验证后再显示的格式就乱了,变成这样:
■ Subject
为什么会错位呢?
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You should override ActionView::Base.field_error_proc. It's currently defined as this within ActionView::Base:
ActionView::Base.field_error_proc
ActionView::Base
@@field_error_proc = Proc.new{ |html_tag, instance| "<p class=\"field_with_errors\">#{html_tag}</p>".html_safe }
You can override it by putting this in your application's class inside config/application.rb:
config/application.rb
config.action_view.field_error_proc = Proc.new { |html_tag, instance| "#{html_tag}".html_safe }
Restart rails server for this change to take effect.
(全文抄袭自 http://stackoverflow.com/questions/5267998/rails-3-field-with-errors-wrapper-changes-the-page-appearance-how-to-avoid-t)
当然,更推荐改成这样
config.action_view.field_error_proc = Proc.new do |html_tag, instance| class_attr_index = html_tag.index 'class=' if class_attr_index html_tag.insert class_attr_index+7, 'error ' else html_tag.insert html_tag.index('>'), ' class="error"' end end
You should override
ActionView::Base.field_error_proc
. It's currently defined as this withinActionView::Base
:You can override it by putting this in your application's class inside
config/application.rb
:Restart rails server for this change to take effect.
(全文抄袭自 http://stackoverflow.com/questions/5267998/rails-3-field-with-errors-wrapper-changes-the-page-appearance-how-to-avoid-t)
当然,更推荐改成这样