A presentation script to demo how easy it is to create a blog app in 10 minutes with rails

blog in rails 3 in less then 10 minutes

rvm install 1.9.2
rvm use 1.9.2
gem list
gem install rails
gem list


rails new blog

cd blog
bundle

rails g scaffold post title:string text:text

rails g model comment post_id:integer text:text
rake db:migrate


rails s

-- blowser
	http://localhost:3000
	create a post	
	http://localhost:3000/posts
	new post
		myfirst post
		my first text
		
-- mate
	-- app/views/posts/index.html.erb

	<h1>Welocome to my BlogPost</h1>
	<% @posts.each do |post|%>
		<h2><%= link_to post.title, post %> </h2>
		<p>
			<%= time_ago_in_words post.created_at %> ago
		</p>
		<p>
			<%= truncate post.text %>
		</p>
	<%end%>
	
	<p>
		<%= link_to "New Post", new_post_path %>
	</p>
	


	-- app/views/posts/show.html.erb
	
	<h1><%= @post.title %> </h1>	
	<%= @post.text %>
	<p>
	<%= link_to "Back", posts_path %>
	|
	<%= link_to "Edit", edit_post_path(@post) %>
	|
	<%= link_to "Delete", @post, :method => :delete, :confirm => "Are you sure?" %>
	</p>
	
	
	-- adding comments
	-- app/views/posts/show.html.erb
	<h1><%= @post.title %> </h1>	
	<%= @post.text %>
	
	<h2>Comments</h2>
		<% @post.comments.each do |comment| %>
		<p><%=comment.text%></p>
		<p><%=time_ago_in_words comment.created_at %> ago </p>
	<%end%>
	<%= form_for [@post, @post.comments.build] do |f| %>
		<p><%= f.text_area :text, :size => '40x10' %></p>
		<p><%= f.submit "Post Comment" %></p>
	<%end%>
	
	<p>
	<%= link_to "Back", posts_path %>
	|
	<%= link_to "Edit", edit_post_path(@post) %>
	|
	<%= link_to "Delete", @post, :method => :delete, :confirm => "Are you sure?" %>
	</p>
	
	
	
	--updating model
	--app/models/post.rb
	has_many :comments
	
	--app/models/comment.rb
	belongs_to :post
	
	--routes.rb
	resources :posts do
    	resources :comments
  	end
  

rails g controller comments create destroy


	--app/controller/comments_controller.rb
	def create
    	@post = Post.find(params[:post_id])
    	@comment = @post.comments.build(params[:comment])
    	@comment.save

    	redirect_to @post
  	end
  

	-- app/views/posts/show.html.erb
	<p><%= link_to "Delete comment", [@post, comment], :method => :delete , :confirm => "Are you sure?" %></p>
	
	
	--app/controller/comments_controller.rb
	def destroy
    	@comment = Comment.find(params[:id])
    	@comment.destroy

    	redirect_to @comment.post
  	end