Rails: Rendering a template not showing Instance Variabe values

Question

I'm trying to render a template that sits within another controller in a page. For some reason, the instance variable values aren't showing up in the page where I have the render. Although, it does show up when I go to the corresponding HTML page.

I'm pretty new to Rails, and maybe I'm missing something obvious with render. Here is some information -

This is the template I have as template.html.erb.

<a href="http://test.com" target="_blank">
    <div class="panel">
      <div>
        <img src="http://someimage" />
      </div>
      <div class="title">
        <%= @title %>
      </div><div class="text"><%= @text %></div>
    </div>
</a>

This is the corresponding method inside the controller - content_controller.rb:

def template
   @title = 'Test Title'
   @text = 'Test Content'

   respond_to do |format|
      format.html
   end
end

I'm trying to render it inside a page.html.erb this way -

render :template => 'content/template'

I can see the values of @title and @text if I navigate to content/template.html but not when I go to page.html

It would be great if somebody can help me out.

Mori · Accepted Answer · 2014-02-01 22:23:01Z

1

Does the route that serves page.html go through the same template action as the content/template.html route? If not, that's the problem. The instance variables get initialized in that action, so if page.html doesn't use it, that explains what you're seeing.

answered Feb 1, 2014 at 22:23

Mori

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2 Comments

Aswin Ramakrishnan Over a year ago

Actually, page.html is inside a different controller. It doesn't go through the template action. Should I call template action from the page action? Sorry, I'm new to Rails. Can you tell me if there is an elegant way to do this?

Mori Over a year ago

You just need to create the same instance variables in whatever controller action precedes the page.html.erb template. There are different ways to share the code that does that. But you can just repeat those @title = ... and @text = ... assignments in page's action.

Aswin Ramakrishnan · Accepted Answer · 2014-02-02 00:32:02Z

0

Thanks Mori for the answer. Here is what I did -

Created a helper method called get_content in content_helper

def get_content
    @title = 'Test Title'
    @content = 'Test Content'
end

I called the get_content method from the page action

include ContentHelper

def page
  get_content
end

answered Feb 2, 2014 at 0:32

Aswin Ramakrishnan

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