Question

I have a posts model… I am trying to display this model on the index page of the webpage.

<% @posts.each do |post| %>
<%= @posts[1].title %> 
<%end%>

The problem with the above code is that it display the title 3 times because i have 3 posts. How do i edit this code to make it only display once.

Answer 1

You meant to do this:

<% @posts.each do |post| %>
  <%= post.title %> 
<%end%>

The each enumerator passes its variables one at a time into a block with the do |variable| syntax. So post is each item in @posts, one after another.

This is a really fundamental concept to Ruby and Rails: without understanding this further you probably won’t get very far. I would recommend you go and read Programming Ruby — a really excellent tutorial and reference to the Ruby programming language — to understand how blocks and enumerators work.