This is what I am doing with blogrolls, which are related to
categories:
sidebar_controller.erl:
category(A, Category_id) ->
[{ewc, category, [A]}, {ewc, blogroll, [A, Category_id]}].
blogroll_controller.erl:
index(A, Category_id) ->
Blogs = blogroll:find({category_id,'=',Category_id},{order_by,
[{position, asc}]}),
[{ewc, blogroll, blog, [A, Blog]} || Blog <- Blogs].
blog(A, Blog) ->
[{data, blogroll:url(Blog)}, {data, blogroll:title(Blog)}].
And now the blogroll_view.et... I could only figure out this way:
<%@ index(Blog) %>
<% [case Blog of
[] -> "";
Blog -> ["<h4>Blogroll</h4>\n<ul>\n", Blog, "</ul>"] end] %>
<%@ blog([Url, Title]) %>
<li><a href="<% Url %>"><% Title %></a></li>
The point is, that if there are no blogs in the roll for a certain
category nothing should be shown at all (heading and empty unordered
list). If you can tell me a way doing this in the controller I have
nothing against keeping ErtTL the way it is, just do something about
the whitespace and I would be fine with it.
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