Feature lead image and first paragraph of text from a wiki page on th…

…e corresponding tag index page (resolves publiclab#973) (publiclab#985)

* Add feature publiclab#973

* Add links and properly display only first paragraph

* Fix off-by-1 bug

* Move the wiki content to above the graph

* Modify tests for the tag controller to reflect changes

* Fix erronous test

app/controllers/tag_controller.rb

@@ -14,6 +14,7 @@ def index
   end
 
   def show
+    @wiki = DrupalNode.where(path: "/wiki/#{params[:id]}").first
     if params[:id].match('question:')
       default_type = "questions"
     else

app/views/tag/show.html.erb

@@ -1,5 +1,27 @@
 <%= render :partial => "sidebar/related" %>
 <div class="col-md-9">
+
+  <% if @wiki %>
+    <div id="wiki-content">
+      <% if @wiki.main_image %>
+        <div class="row">
+          <div class="col-md-4">
+            <%= image_tag(@wiki.main_image.path, class: "img-responsive") %>
+          </div>
+          <div class="col-md-8">
+            <h2><%= link_to @wiki.latest.title, "/wiki/#{params[:id]}" %></h2>
+            <%= (@wiki.latest.render_body.split('</p>').first + '</p>').html_safe %>
+            <%= link_to("Read More", "/wiki/#{params[:id]}") if @wiki.latest.render_body.split('</p>').length > 2 %>
+          </div>
+        </div>
+      <% else %>
+        <h2><%= @wiki.latest.title %></h2>
+        <%= @wiki.latest.render_body.split('\n').first.html_safe %>
+        <%= link_to("Read More", "/wiki/#{params[:id]}") if @wiki.latest.render_body.split('\n').length > 1 %>
+      <% end %>
+    </div>  
+  <% end %>
+
   <% if @tags.first %>
   <div id="note-graph" style="height:100px;"></div>
 

test/functional/tag_controller_test.rb

@@ -97,6 +97,15 @@ def setup
     end
 
     #assert_equal assigns['tags'].length, 1
+    assert_select '#wiki-content', 0
+  end
+
+  test "should show a featured wiki page at top, if it exists" do
+    tag = tags(:test)
+
+    get :show, id: node(:organizers).slug
+
+    assert_select '#wiki-content', 1
   end
 
   test "tag widget" do