More sidebar module fixes.

There was some problems with the approach in the previous commits.

- render_collection (render @sidebar_modules in our case) requires
that all objects return the same partial path. Ours may not do that,
so we wrote our own `render_sidebar_modules`-helper.

- The way render_partial finds the correct path to the partial is
to append what's returned by to_partial_path with whatever root
the parent view is in. That would require duplication of the partials
under all the different engines namespaces. Our `render_sidebar_modules`
does it differently, and just looks up the partial according to the
root namespace. This means the sidebar_module code can move back under
the root application so we don't mess up the refinery namespaces.

- Finally found the proper way to link to a blog_post so that it
works from all namespaces. The correct way is:

    refinery.blog_post_path(post)

This works in views (and presumably helpers,) but not in controllers
which is why we struggled with it before.

3 files changed, 2 insertions, 7 deletions

diff --git a/app/views/common/_left_sidebar.html.erb b/app/views/common/_left_sidebar.html.erb
index 1a55f7e..3cdbe0c 100644
--- a/app/views/common/_left_sidebar.html.erb
+++ b/app/views/common/_left_sidebar.html.erb
@@ -1,3 +1,3 @@
 <div id="left_sidebar">
-  <%= render @sidebar_modules.select {|m| m.position == 1} %>
+  <%= render_sidebar_modules @sidebar_modules.select {|m| m.position == 1} %>
 </div>
diff --git a/app/views/common/_right_sidebar.html.erb b/app/views/common/_right_sidebar.html.erb
index 9a40a11..082e4f1 100644
--- a/app/views/common/_right_sidebar.html.erb
+++ b/app/views/common/_right_sidebar.html.erb
@@ -1,3 +1,3 @@
 <div id="right_sidebar">
-  <%= render @sidebar_modules.select {|m| m.position == 2} %>
+  <%= render_sidebar_modules @sidebar_modules.select {|m| m.position == 2} %>
 </div>
diff --git a/app/views/common/_sidebar_module.html.erb b/app/views/common/_sidebar_module.html.erb
deleted file mode 100644
index c7a24e9..0000000
--- a/app/views/common/_sidebar_module.html.erb
+++ /dev/null
@@ -1,5 +0,0 @@
-<div id="sidebar_module_<%= sidebar_module.title %>" class="sidebar_module">
-  <h1><%= sidebar_module.title %></h1>
-  <div><%= content_for "sidebar_module_#{sidebar_module.title}_body" %></div>
-</div>
-