Difference between <% %> and <%= %> in RoR

Question

What the difference between

<% some code %>

and

<%= some code %>

in RoR?

score 9 · Accepted Answer · answered Feb 28 '13 at 01:57

9

Think of it like this:

<% execute this code and display nothing %>

and

<%= execute this code and display the result in the view %>

So, for example you could do this:

<% @values = ['eenie', 'menie', 'miney', 'mo' ] %>
<% @values.each do |value| %>
  The current value is <%= value %>!
<% end %>

answered Feb 28 '13 at 01:57

Kevin Bedell

<% = %> This is the ruby syntax you can use this for view and this <% %> you use for condition, loop or debugger. – Saket kumar Jaiswal May 28 '15 at 11:19
<% %> this tag to not echo the code output whereas <%= %> this echo the output of the code segment – wasipeer Oct 14 '15 at 06:10

score 0 · Answer 2 · answered Feb 28 '13 at 01:33

0

<%= some code %> will evaluate the statement and display it in the view. <% some code %> will only evaluate the statement.

answered Feb 28 '13 at 01:33

Huy

2 Answers2