Passing local variable to partial inside for each loop rails 3

Question

This is my code for rendering the partial (the @parties collection is being generated correctly, I have tested that):

        <% @parties.each do |party| %>
            <div class="item">
              <%= render 'parties/party', :object => party  %>
            </div>
        <% end %>

And this is the code in the partial:

<%= party.name %>

However, I get the following error:

undefined method `name' for nil:NilClass

I'm at my wits end, someone please help :-|

Also, this is the code for the controller to render the view containing the partial (The controller's called default_controller):

def index
    @parties = Party.all
end

Is it of any consequence that this isn't the parties_controller?

If you are here for Rails 5, here is your answer: stackoverflow.com/questions/47264342/… — Andy
– Andy, Commented Sep 17, 2018 at 9:32

Samiron · Accepted Answer · 2012-09-26 04:25:50Z

11

I've tried something like below and it worked

<%= render :partial => 'party', :object => party  %>

and I can access like party.name. the local variable is named after the partial name which is party here.

Note: Im assuming that your both partials are of parties_controller. So this should work.

Update: Here is what ive tried with again

class PostsController < ApplicationController
    #... ...
    def index
        @posts = Post.all
        @comments = Comment.all #<---- Loading comments from PostsController
        #... ...
    end  
end

#views/posts/index.html.erb

<% @comments.each do |comment| %>
    <%= render :partial=>"comments/comment", :object=>comment %>
<% end %>

#views/comments/_comment.html.erb

<%= comment.body %>

And its working :)

edited Sep 26, 2012 at 4:25

answered Sep 25, 2012 at 13:35

Samiron

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5 Comments

Samiron Over a year ago

Though the link apidock.com/rails/ActionController/Base/render is deprecated, it provides some good examples of render.

nicohvi Over a year ago

The page which uses the partial is not rendered throught the parties_controller - why is that a problem? (The code for the controller being used still gets all parties from the database using @parties = Party.all)

Samiron Over a year ago

Ive updated my post with another example. Here is the tiny rails project that im giving example from. drive.google.com/file/d/0Byto7mT_V2AyOGNaODNKbmU1X2M/…. You can download and can see in action yourself :)

nicohvi Over a year ago

I literally didn't change a single line of code, just restarted my computer and now it works - christ. Thank you very much for taking the time to help anyway :-) (your solution is exactly what I was doing)

Samiron Over a year ago

oh thats great :) may be it required a rails server restart.

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