[Rails Level 1] VIEW

[Rails Level 1] VIEWS

Syntax:

<% ... %>       //execute code

<%= ... %>    //print out the result

 

Dir Hierarchy:

 app

   ---views

　　　---layouts

　　　　　　--- application.html.erb    // The main layout

         ---zombies

　　　---tweets

　　　　　　--- index.html.erb           // list all tweets

　　　　　　--- show.html.erb           // view a tweet

 

Normally, we put main layout in the layout.html.erb file and for a detail view we put into the show,html.erb
Then we can use 'yield' to tell rails I want to show detail information and render show.html.erb

<%= yield %>

How to match?
yield find show.html.erb, if there are multi page, how to do that?

link_to:

<%= link_to tweet.zombie.name, tweet.zombie %>     

<%= link_to twweet.zombie.name, zombie_path(tweet.zmobie)  %>   

<%= link_to twweet.zombie.name,

            zombie_path(tweet.zmobie),

            confirm: "Are you show?" %>

<%= link_to text_to_show, model_instance %> 

Create Link:

in index.html.erb is the place to show the list information, here can list all the tweets.

<% Tweet.all.each do |tweet| %>

      <%= link_to tweet.status, tweet %>

      <%= link_to tweet.zmobie.name, tweet.zombie%>

<% end %>

 

 

Empty table?

<% tweets = Tweet.all %>

<% tweets.each do |tweet| %>

      <%= link_to tweet.status, tweet %>

      <%= link_to tweet.zmobie.name, tweet.zombie%>

<% end %>

<% if tweets.size == 0 %>

   Not found

<% end %>

 

Edit & delete links:

<% tweets = Tweet.all %>

<% tweets.each do |tweet| %>

      <%= link_to tweet.status, tweet %>

      <%= link_to tweet.zmobie.name, tweet.zombie%>

      <%= link_to "Edit", edit_tweet_path(tweet) %>

      <%= link_to "Delete", tweet, method: :delete) %>

<% end %>

 

URL Generator Methods: