Cross Controller variables in Ruby-on-Rails

Question

I have a view with code:

   <section>
  <h1>
    <%= render @client %>
  </h1>
  <h2>
    <%= render @client.telnumbers %>
  </h2>
  <h3>
    <%= link_to 'New Tel', new_telnumber_path, :locals => { :client => @client }, :remote => true %>
  </h3>
</section>

But in my Telnumbers Controller - variable @client - nil What can I see my @client ?

My Telnumbers controller:

class TelnumbersController < ApplicationController
  def new
    @telnumber = Telnumber.new
    @telnumber.client_id = @client.id 
  end

  def create
    @telnumber = Telnumber.new(params[:telnumber])
    render :action => :new unless @telnumber.save
  end
end

So I have Error Called id for nil ...

I solved it by adding variables into new_telnumber_path

<%= link_to 'New Tel', new_telnumber_path(:client_id => @client.id ), :remote => true, :class => 'btn btn-small' %>

And in Controller:

  def new
    @telnumber = Telnumber.new
    @client = Client.find(params[:client_id]) 
    @telnumber.client_id = @client.id 
  end

Thanks!

could u post your controller code as well !!

sameera207
– sameera207

2013-03-25 09:39:01 +00:00
Commented Mar 25, 2013 at 9:39 — sameera207
– sameera207, Commented Mar 25, 2013 at 9:39

Christoph Petschnig · Accepted Answer · 2013-03-25 10:11:55Z

3

Every one of your controllers inherits by default from your ApplicationController. You can put a before_filter there that assigns the variables that you want to use in many (or every) controllers.

Here is an example:

class ApplicationController < ActionController::Base
  before_filter :set_client

  private

  def set_client
    # set the @client variable: load client from session or whatever your app logic is
  end
end

You can read here more about controller filters in Rails: http://guides.rubyonrails.org/action_controller_overview.html#filters

edited Mar 25, 2013 at 10:11

answered Mar 25, 2013 at 9:04

Christoph Petschnig

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1 Comment

Dmitry Over a year ago

I don't understand how I can assign in my ClientController variable @client in the before_filter of ApplicationController ?

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Cross Controller variables in Ruby-on-Rails

<%= link_to 'New Tel', new_telnumber_path(:client_id => @client.id ), :remote => true, :class => 'btn btn-small' %>

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<%= link_to 'New Tel', new_telnumber_path(:client_id => @client.id ), :remote => true, :class => 'btn btn-small' %>

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