Rails Generator for nested Resources

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was researching but did not find any Generator to nested Resources in Rails. Would anyone know me if you know any?

ruby-on-rails

  • You probably won’t find it. Adding nested_attributes_for is one line. It’s easier to create both models and do it manually.

  • I get it. I was actually looking for a Generator for the controller, who already knew how to generate one that carries the parent model and defines the functions in its scope.

  • you say something like that: SomeModule::Class ?

  • Not exactly. A Rails Generator...

1 answer

2


Henrique, there is no nested Resources generator, but Rails makes it easy for you to do this by hand.

In case Article has many Comments, you would basically need to change:

a) The models:

class Article < ActiveRecord::Base
  has_many :comments
end

class Article < ActiveRecord::Base
  belongs_to :article
end

b) The routes:

resources :articles do
  resources :comments
end

c) And finally, the controllers: (that part might be more)

comments_controller.rb

class CommentsController < ApplicationController
  def index
    @article = Article.find(params[:article_id])
    @comments = @article.comments
  end

  def new
    @article = Article.find(params[:article_id])
    @comment = @article.comments.build
  end

  def create
    @article = Article.find(params[:article_id])
    @comment = @article.comments.build(params[:comment])
    if @comment.save
      flash[:notice] = "Successfully created comment."
      redirect_to article_url(@comment.article_id)
    else
      render :action => 'new'
    end
  end

  def edit
    @comment = Comment.find(params[:id])
  end

  def update
    @comment = Comment.find(params[:id])
    if @comment.update_attributes(params[:comment])
      flash[:notice] = "Successfully updated comment."
      redirect_to article_url(@comment.article_id)
    else
      render :action => 'edit'
    end
  end

  def destroy
    @comment = Comment.find(params[:id])
    @comment.destroy
    flash[:notice] = "Successfully destroyed comment."
    redirect_to article_url(@comment.article_id)
  end
end

articles_controller.rb

class ArticlesController < ApplicationController
  def index
    @articles = Article.find(:all)
  end

  def show
    @article = Article.find(params[:id])
    @comment = Comment.new(:article => @article)
  end

  def new
    @article = Article.new
  end

  def create
    @article = Article.new(params[:article])
    if @article.save
      flash[:notice] = "Successfully created article."
      redirect_to @article
    else
      render :action => 'new'
    end
  end

  def edit
    @article = Article.find(params[:id])
  end

  def update
    @article = Article.find(params[:id])
    if @article.update_attributes(params[:article])
      flash[:notice] = "Successfully updated article."
      redirect_to @article
    else
      render :action => 'edit'
    end
  end

  def destroy
    @article = Article.find(params[:id])
    @article.destroy
    flash[:notice] = "Successfully destroyed article."
    redirect_to articles_url
  end
end

Following the model illustrated above you should have no problems =)

Any more specific question, you can ask a new question!

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