Question

Iterating over ‘posts’ I want to create a row div which will contain two post divs:

<div id="row">
  <div id="post"> ... </div>
  <div id="post"> ... </div>
</div>
<div id="row">
  <div id="post"> ... </div>
  <div id="post"> ... </div>
</div>

If I try this:

- @posts.each_with_index do |post,index|
  - if index %2 == 0
    .row
      .post
  - else
    .post

…then I get:

<div class="row">
  <div class="post"></div>
</div>
<div class="post"></div>
<div class="row">
  <div class="post"></div>
</div>
<div class="post"></div>

I can see why this happens but I can’t figure out how to do it correctly. Any ideas?

UPDATE:
When accessing object attributes as per apneadiving’s suggesion, I receive errors when the last slice contains only a single post. For example, the following…

- @posts.each_slice(2) do |post1, post2|
    .row
      .post= post1.title
      .post= post2.title

returns the error “undefined method `title’ for nil:NilClass” when there are an odd number of posts. To get around this I have used this:

- @posts.each_slice(2) do |post1, post2|
    .row
      .post= post1.title
      .post= post2.title unless post2.nil?

Answer 1

I’d take my posts 2 by 2, I can’t see how to do otherwise with haml:

- @posts.each_slice(2) do |post1, post2|
    .row
      .post= post1
      .post= post2