Initial release of Discourse

app/controllers/excerpt_controller.rb

@@ -0,0 +1,40 @@
+require_dependency 'post_excerpt_serializer'
+
+class ExcerptController < ApplicationController
+
+
+  def show
+    requires_parameter(:url)
+
+    uri = URI.parse(params[:url])
+    route = Rails.application.routes.recognize_path(uri.path)
+
+    case route[:controller]
+      when 'topics'
+        
+        # If we have a post number, retrieve the last post. Otherwise, first post.        
+        topic_posts = Post.where(topic_id: route[:topic_id].to_i).order(:post_number)
+        post = route.has_key?(:post_number) ? topic_posts.last : topic_posts.first
+        guardian.ensure_can_see!(post)
+
+        render :json => post, serializer: PostExcerptSerializer, root: false
+      when 'users'
+        user = User.where(username_lower: route[:username].downcase).first
+        guardian.ensure_can_see!(user)
+        render :json => user, serializer: UserExcerptSerializer, root: false
+      when 'list' 
+        if route[:action] == 'category'
+          category = Category.where(slug: route[:category]).first
+          guardian.ensure_can_see!(category)
+          render :json => category, serializer: CategoryExcerptSerializer, root: false
+        end
+      else
+        render nothing: true, status: 404  
+      end
+
+  rescue ActionController::RoutingError, Discourse::NotFound
+    render nothing: true, status: 404
+  end
+
+
+end