routes.rb
resources :posts do
resources :comments
end
posts_controller.rb
class PostsController < ApplicationController
# GET /posts
# GET /posts.json
def index
@posts = Post.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: @posts }
end
end
# GET /posts/1
# GET /posts/1.json
def show
@post = Post.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: @post }
end
end
# GET /posts/new
# GET /posts/new.json
def new
@post = Post.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: @post }
end
end
# GET /posts/1/edit
def edit
@post = Post.find(params[:id])
end
# POST /posts
# POST /posts.json
def create
@post = Post.new(params[:post])
respond_to do |format|
if @post.save
format.html { redirect_to @post, notice: 'Post was successfully created.' }
format.json { render json: @post, status: :created, location: @post }
else
format.html { render action: "new" }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
# PUT /posts/1
# PUT /posts/1.json
def update
@post = Post.find(params[:id])
respond_to do |format|
if @post.update_attributes(params[:post])
format.html { redirect_to @post, notice: 'Post was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
# DELETE /posts/1
# DELETE /posts/1.json
def destroy
@post = Post.find(params[:id])
@post.destroy
respond_to do |format|
format.html { redirect_to posts_url }
format.json { head :no_content }
end
end
end
posts _form.html.erb
<%= form_for(@post) do |f| %>
<% if @post.errors.any? %>
<%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:
<% @post.errors.full_messages.each do |msg| %>
- <%= msg %>
<% end %>
<% end %>
<%= f.label :title %>
<%= f.text_field :title %>
<%= f.label :body %>
<%= f.text_area :body %>
<%= f.submit %>
<% end %>
posts edit.html.erb
Editing post
<%= render 'form' %>
<%= link_to 'Show', @post %> |
<%= link_to 'Back', posts_path %>
posts index.html.erb
Listing posts
<% @posts.each do |post| %>
<% end %>
Title |
Body |
|
|
|
<%= post.title %> |
<%= post.body %> |
<%= link_to 'Show', post %> |
<%= link_to 'Edit', edit_post_path(post) %> |
<%= link_to 'Edit', edit_post_url(post) %> |
<%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %> |
<%= link_to 'New Post', new_post_path %>
posts show.html.erb
New post
<%= render 'form' %>
<%= link_to 'Back', posts_path %>
<%= notice %>
Title:
<%= @post.title %>
Body:
<%= @post.body %>
<%= link_to 'Comments',post_comments_path(@post) %>
<%= link_to 'Edit', edit_post_path(@post) %> |
<%= link_to 'Back', posts_path %>
comments_controller.rb
class CommentsController < ApplicationController
# GET /comments
# GET /comments.json
def index
@post = Post.find(params[:post_id])
@comments = @post.comments
respond_to do |format|
format.html # index.html.erb
format.json { render json: @comments }
end
end
# GET /comments/1
# GET /comments/1.json
def show
p params
@post = Post.find(params[:post_id])
@comment = Comment.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: @comment }
end
end
# GET /comments/new
# GET /comments/new.json
def new
@post = Post.find(params[:post_id])
@comment = @post.comments.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: @comment }
end
end
# GET /comments/1/edit
def edit
@comment = Comment.find(params[:id])
end
# POST /comments
# POST /comments.json
def create
@post = Post.find(params[:post_id])
@comment = @post.comments.new(params[:comment])
respond_to do |format|
if @comment.save
format.html { redirect_to [@post,@comment], notice: 'Comment was successfully created.' }
format.json { render json: @comment, status: :created, location: @comment }
else
format.html { render action: "new" }
format.json { render json: @comment.errors, status: :unprocessable_entity }
end
end
end
# PUT /comments/1
# PUT /comments/1.json
def update
@post = Post.find(params[:post_id])
@comment = Comment.find(params[:id])
respond_to do |format|
if @comment.update_attributes(params[:comment])
format.html { redirect_to [@post,@comment], notice: 'Comment was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: @comment.errors, status: :unprocessable_entity }
end
end
end
# DELETE /comments/1
# DELETE /comments/1.json
def destroy
@post = Post.find(params[:post_id])
@comment = Comment.find(params[:id])
@comment.destroy
respond_to do |format|
format.html { redirect_to post_comments_url(@post) }
format.json { head :no_content }
end
end
end
comments _form.html.erb
<%= form_for([@post,@comment]) do |f| %>
<% if @comment.errors.any? %>
<%= pluralize(@comment.errors.count, "error") %> prohibited this comment from being saved:
<% @comment.errors.full_messages.each do |msg| %>
- <%= msg %>
<% end %>
<% end %>
<%#= f.label :post %>
<%#= f.text_field :post %>
<%= f.label :body %>
<%= f.text_area :body %>
<%= f.submit %>
<% end %>
comments edit.html.erb
Editing comment
<%= render 'form' %>
<%= link_to 'Show', [@post,@comment] %> |
<%= link_to 'Back', post_comment_path %>
comments index.html.erb
Listing comments
<% @comments.each do |comment| %>
<% end %>
Post |
Body |
|
|
|
<%= comment.post.title %> |
<%= comment.body %> |
<%= link_to 'Show', post_comment_path(@post,comment) %> |
<%= link_to 'Edit', edit_post_comment_path(@post,comment) %> |
<%= link_to 'Destroy', post_comment_path(@post, comment), method: :delete, data: { confirm: 'Are you sure?' } %> |
<%= link_to 'back' ,post_path(@post) %>
<%= link_to 'New Comment', new_post_comment_path %>
comments new.html.erb
New comment
<%= render 'form' %>
<%= link_to 'Back', post_comments_path(@post.id) %>
<%= notice %>
Post:
<%= @comment.post %>
Body:
<%= @comment.body %>
<%= link_to 'Edit', edit_post_comment_path %> |
<%= link_to 'Back', post_comments_path %>
models posts.rb
class Post < ActiveRecord::Base
attr_accessible :body, :title
has_many :comments
end
models post.rb
class Comment < ActiveRecord::Base
belongs_to :post
attr_accessible :body
end