CODEWITHSUNDEEP
ruby-on-rails
Rebel
Rebel

Reputation: 797

Rails: undefined method `model_name' for Fixnum:Class

category/show.html.erb

<body class="home">
<% @category.subcategories.each do |subcategory| %>
    <%= link_to subcategory.name, subcategory.id %>
<% end %>

Throws NoMethodError in Category#show undefined method `model_name' for Fixnum:Class

The URL is http://example.com:3000/category/11

Routes.rb

FirstApp::Application.routes.draw do
  root 'category#index'
  resources :category 
end

Category controller

class CategoryController < ApplicationController

  def index
    @categories = Category.all
  end    

  def new
  end

  def show
    @category = Category.find params[:id]
  end
end

Subcategory controller is empty

class SubcategoryController < ApplicationController

  def create
  end

  def new
  end

  def show
    @category = Category.find(params[:id])
  end
end

The method category.subcategories works in the console. I'm probably missing something obvious.

Upvotes: 2

Views: 2881

Answers (3)

Salil
Salil

Reputation: 47472

Change

<%= link_to subcategory.name, subcategory.id %>

to

<%= link_to subcategory.name, subcategory %>

Upvotes: 0

Marek Lipka
Marek Lipka

Reputation: 51151

Try this:

<%= link_to subcategory.name, subcategory %>

When you pass subcategory.id as a second argument to this method, Rails try to guess the path from Fixnum you passed. Since it's impossible, the error is raised.

You should also add

resources :subcategories

to your routes.rb and rename your SubcategoryController to SubcategoriesController.

and in SubcategoriesController#show should be:

@subcategory = Subcategory.find(params[:id])

Upvotes: 3

Rajarshi Das
Rajarshi Das

Reputation: 12320

could you please try this

 <% @category.subcategories.each do |subcategory| %>
   <%= link_to subcategory.name, subcategory_path(subcategory) %>
 <% end %>

and in controller hope you have a model subcategory with many to many relationship with category 

def show
  @category = SubCateogry.find params[:id]
end

In routes

resources :subcategories

Upvotes: 0

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