Link to remote destroy is not updating div

Question

I created a view that show all my invoices products and also created a link that remove an invoice product from a div and it will be updated so everytime that I remove everything will be in the same page.

Here is the table

invoices
  |id|  |name|
    1    ABC
    2    DEF

invoice_products
  |id|  |invoice_id|  |word|
    1      1           AAAA
    2      1           BBBB 
    3      2           CCCC   
    4      2           DDDD

Here is the controller:

def show
   @invoice= Invoice.find(params[:id])
end

def destroy_job
   @job = InvoiceProduct.find(params[:id])
   @invoice = @job.invoice
   @job.destroy()

   render :partial=>"finance_management/invoice/partials/new_subjects" }
end

Here is the model

class Invoice < ActiveRecord::Base
  has_many   :invoice_products
end

class InvoiceProduct < ActiveRecord::Base
  belongs_to :invoice
end

Here is the view: "show.html.erb"

<%= @invoice.id %>

<div id="table"%>
<% @invoice.invoice_products.each do |i| %>
   <%= i.name %>
   <%= i.word %>
   <%=link_to_remote(image_tag("image.png"), :update => "table",:url => { :controller=>'finance_management/invoice_product',:action => 'destroy_job',:id=>i.id }  )%>
<% end %>
</div>

The log:

ActionView::TemplateError (undefined method `invoice_products' for nil:NilClass)

I created "delete_job.js.erb":

$('table').html("<%= j(render partial: 'finance_management/invoice/partials/new_subjects') %>");

But I got this error:

NoMethodError (undefined method `invoice_products=' for nil:NilClass):

The problem is that is not updating the div seems because getting nil error

Somebody can help me please?

Answer 1

According to this you must do this:

The controller invoice_controller.rb:

def show
  @invoice= Invoice.find(params[:id])
  @products = InvoiceProduct.find(:all,:conditions=>['invoice_id = ?',params[:id] ])
end

def destroy_job
  @job = InvoiceProduct.find(params[:id])
  @obj_invoice = Invoice.find(@job.invoice_id)    
  @job.destroy
end

The view "invoice/show.html.erb"

<%= @invoice.id %>
<div id="table"%>
  <%= render :partial=>"invoice/partials/products" %>
</div>

Don't forget to create the partial view "invoice/partials/_products.erb" this will replace the div

 <% @products.each do |i| %>
    <%= i.name %>
    <%= i.word %>
   <%=link_to_remote(image_tag("image.png"),:url=>{:controller=>'invoice',:action => 'destroy_job',:id=>i.id})%>
 <% end %>

Finally create "invoice/destroy_job.rjs"

 page.replace_html 'table', :partial=>'invoice/partials/products'