Nested if is not working in eco template engine - coffeescript

Question

I was trying use nested if in eco template. Here is my code
<% for document in #getCollection('posts').toJSON()[#document.page.startIdx...#document.page.endIdx]: %>
<% if true %>
<p> <%= new Date(document.date.toDateString()).getTime() <= new Date(new Date().toDateString()).getTime() %> </p>
<div class='row-fluid'>
<div class='span12 blogShadow'>
<div class="row-fluid">
<div class='span12 archiverow'>
<span>(<%= document.date.toDateString() %>) => </span>
<span>
<%= document.title %>
</span>
</div>
</div>
<div class="row-fluid archiverow">
<% if document.img:%>
<img class="span1" src="<%= document.img %>" width=100 height=100 />
<span class="span11"><%= document.description %></span>
<% else: %>
<span class="span12"><%= document.description %></span>
<% end %>
</div>
</div>
</div>
<% end %>
<br/>
<br/>
<% end %>
if I remove first if with its corresponding end statement things working fine, but if I put that it is giving parsing error with message unexpected dedent.
for the else statement down there
<% else: %>
<span class="span12"><%= document.description %></span>
<% end %>
I am new to eco and I don't understand the message. Is this kind of nested if is possible and if not what is the work around for this.
As, I am using docpad and eco I am using as template engine.
Please let me know if any further details is required.

Answer 1

I able to solve the issue by following code. I was missing : to evaluate expression.
<% for document in #getCollection('posts').toJSON()[#document.page.startIdx...#document.page.endIdx]: %>
<% if (new Date(document.date.toDateString()).getTime() <= new Date(new Date().toDateString()).getTime()): %>
<div class='row-fluid'>
<div class='span12 blogShadow'>
<div class="row-fluid">
<div class='span12 archiverow'>
<span>(<%= document.date.toDateString() %>) => </span>
<span>
<%= document.title %>
</span>
</div>
</div>
<div class="row-fluid archiverow">
<% if document.img:%>
<img class="span1" src="<%= document.img %>" width=100 height=100 />
<span class="span11"><%= document.description %></span>
<% else: %>
<span class="span12"><%= document.description %></span>
<% end %>
</div>
</div>
</div>
<% end %>
<% end %>
both if is working without any issue.