added "Suggest new title" feature

closes publiclab#919

app/controllers/notes_controller.rb

@@ -333,4 +333,10 @@ def rsvp
     @node.add_tag('rsvp:' + current_user.username, current_user)
     redirect_to @node.path + '#comments'
   end
+
+  def request_title_change
+    node = Node.find params[:id].to_i
+    node.update(title: params[:title])
+    redirect_to node.path + "#comments"
+  end
 end

app/helpers/application_helper.rb

@@ -44,4 +44,22 @@ def insert_extras(body)
   def render_map(lat, lon, items)
     render partial: 'map/leaflet', locals: { lat: lat, lon: lon, items: items }
   end
+
+  def title_suggestion(body,user,nid,id)
+    body.gsub(/\{([^}]+)\}/) do |title_suggestion|
+      a = ActionController::Base.new()
+      is_creator = current_user.drupal_user == Node.find(nid).author
+      title = title_suggestion[1,title_suggestion.length-2] if title_suggestion.length>2
+      output = a.render_to_string(template: "notes/_title_suggestion",
+                                  layout:   false,
+                                  locals:   {
+                                    user: user,
+                                    nid: nid,
+                                    title: title,
+                                    is_creator: is_creator,
+                                  }
+               )
+      output
+    end
+  end
 end

app/views/notes/_comment.html.erb

@@ -64,7 +64,7 @@
   </script>
 
   <div id="c<%= comment.cid %>show">
-    <p><%= raw sanitize(auto_link(RDiscount.new(comment.body).to_html)) %></p>
+    <p><%= raw sanitize (RDiscount.new(title_suggestion(comment.body, comment.drupal_user.name, comment.nid, comment.id)).to_html), attributes: %w(class style href data-method) %></p>
     <% if comment.body.include?('?') %>
       <p class="alert alert-info">Is this a question? <a href="/questions/new?title=<%= comment.body %>">Click here</a> to post it to the <a href="/questions">Questions page</a>.
       </p>

app/views/notes/_title_suggestion.html.erb

@@ -0,0 +1,6 @@
+<blockquote>
+	<a href="/profile/<%= user %>"><%= user %></a> is suggesting an alternative title, "<%= title %>".
+	<% if is_creator %> 
+	To accept this as a new title to your post, <a href="/request_title_change/<%= nid %>/<%= title %>" data-method='post'>click here</a>
+	<% end %> 
+</blockquote>

config/routes.rb

@@ -6,6 +6,7 @@
   post 'comment/create/token/:id.:format', to: 'comment#create_by_token'
 
   get 'searches/test' => 'searches#test'
+  post '/request_title_change/:id/:title' => 'notes#request_title_change'
 
   #Search RESTful endpoints
   #constraints(subdomain: 'api') do