render template doesn't work

Question

I'm having trouble with rendering an action from different controller.

I want to render index action from TagsController

class TagsController < ApplicationController
  def index
    @tags = Tag.all
  end
end

In tags/index.html.slim, it successfully returns objects from db.

= @tags

=>#<Tag::ActiveRecord_Relation:0x007ff7c65ca060>

So I tried this code in users/new.html.slim.

= render :template => "tags/index"

It shows nothing. Can anyone tell me what's wrong?

Anything helps, thanks!

Answer 1

You render templates from your controller, not from your views. Like this

class TagsController < ApplicationController
  def index
    @tags = Tag.all
    render :template => "tags/index"
  end
end

Answer 2

If you put,

render :template => "tags/index"

in your controller it will look for the directory and file like:

views/tags/index.html.erb

as you can render the data from @tags .

Answer 3

Solved it. I just used before_filter method.

before_filter :load_categories, only: [:index]
 # your public controller methods   

private

def load_categories
 @categories = Category.all
end

I guess it's not the perfect way, which it's not calling an action from a different controller. I will try other answers as well.