ruby-on-rails - 是否可以将文本内容获取到视图中？

Question

有这些文件

• 意见/sign_up/new.html.erb
• 意见/sign_up/content.text.erb

我想content.text.erb默认显示这个 text_area 中的内容。
我怎样才能？

意见/sign_up/new.html.erb

<%= text_area :page, :content, :readonly => 'true', :size => '250x10' %>

意见/sign_up/content.text.erb

Hello

Are you seeing this?


This should be at Line 6.

Answer 1

根据文档，您需要设置@page.content（因为您的前两个参数:page和:content）。如果这是不可能的，我会退回到标准的“硬编码”文本区域，比如<textarea><%= render file: "sign_up/content" -%></textarea>

Answer 2

While I haven't tested it your answer should look about this:

<%= text_area :page, :content, :readonly => 'true', :size => '250x10', :value => render_to_string("/sign_up/content") %>

You may need to apply html_safe on the returned string from render_to_string

UPDATE:

After trying myself I got an error so I came up with a workaround:

1 - set @val in your controller the following way:

@val = render_to_string(:file => "/sign_up/content.html.erb", :layout => false)

2 - Then in your view:

<%= text_area :page, :content, :readonly => 'true', :size => '250x10', :value => @val %>

Works as charm.

If you don't want to use the value attribute of textarea you can assign the value in step 1 to the @page.content and it will automatically be inserted as a default value to the form input.