为什么我的嵌套text_area助手添加html标签？ [英] Why is my nested text_area helper adding html tags?

问题描述

我在一个复杂的表单中有一个text_area，这个复杂的表单被称为是这样的

 <％= f.fields_for ：笔记do | notes_form | ％GT; 
<％= render：partial => 'note'，：locals => {：f => notes_form，：operation => f，：count => operation.notes.count}％> 
<％end％> 
< p><％= add_child_linkAdd note，：operation_notes％>< / p> 
  

并且部分看起来像这样

 <％count || = 2％> 
< div class ='fields'> 
<％= f.text_area：note_text，：rows => 4，：class => 笔记％> 
<％= remove_child_linkx，f，count％> 
< / div> 
  

表单上可以有很多注释，因此可以添加和移除子链接。

我遇到的问题是，如果我用文本'abcd'添加记事，当我调出编辑表单我得到'< p> abcd< / p>'。如果笔记中有换行符，它会添加< br /> 标签。 text_area表单助手似乎使用simple_format助手，但我不知道为什么。任何人都可以帮忙，因为这是非常不受欢迎的行为？

解决方案

之前在同一页面上，我显示注释并使用simple_format将其格式化为

 <％= simple_format note .note_text％> 
  

看起来simple_format有点破坏性，因为在这之后，对note.note_text的调用总是返回格式化文本。如果我将上面的内容更改为

 <％= simple_format note.note_text.dup％> 
  

那么note_text属性就不会改变，我可以得到相应的结果。

我将不得不更加关注simple_format，但这真的让我感到不受欢迎的行为。

编辑 / p>

看起来这已经在Rails 3.1中得到了修正

I have a text_area in a partial in a complex form that is called like so

<%= f.fields_for :notes do |notes_form| %>
  <%= render :partial => 'note', :locals => {:f => notes_form, :operation => f, :count => operation.notes.count} %>
<% end %>
<p><%= add_child_link "Add note", :operation_notes %></p>

and the partial looks like this

<% count ||= 2 %>
<div class='fields'>
<%= f.text_area :note_text, :rows => "4", :class => "notes" %>
<%= remove_child_link "x", f, count %>
</div>

There can be many notes on the form hence the add and remove child links.

The issue I'm having is that if I add a note with the text 'abcd', when I bring up the edit form I get '<p>abcd</p>'. If there are line breaks in the note it adds <br /> tags. The text_area form helper seems to be using the simple_format helper but I have no idea why. Can anyone help as this is very undesirable behaviour?

解决方案

Ah solved,

Earlier on the same page I was displaying the note and using simple_format to format it with

<%= simple_format note.note_text %>

It seems that simple_format is somewhat destructive as after this, a call to note.note_text always returns the formatted text. If I change the above to

<%= simple_format note.note_text.dup %>

then the note_text attribute is not altered and I get the appropriate results.

I will have to look more closely at simple_format but this really strikes me as undesirable behaviour.

EDIT

It looks like this has been corrected in Rails 3.1

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