added forum topic/post

app/models/forum_post.rb

@@ -0,0 +1,12 @@
+class ForumPost < ActiveRecord::Base
+  attr_accessible :body, :topic_id
+  belongs_to :creator, :class_name => "User"
+  belongs_to :topic, :class_name => "ForumTopic"
+  after_save :update_topic_updated_at
+  validates_presence_of :body, :topic_id, :creator_id
+  scope :search_body, lambda {|body| where(["text_index @@ plainto_tsquery(?)", body])}
+  
+  def update_topic_updated_at
+    topic.touch
+  end
+end

app/models/forum_topic.rb

@@ -0,0 +1,7 @@
+class ForumTopic < ActiveRecord::Base
+  attr_accessible :title
+  belongs_to :creator, :class_name => "User"
+  has_many :posts, :class_name => "ForumPost", :order => "forum_posts.id asc"
+  validates_presence_of :title, :creator_id
+  scope :search_title, lambda {|title| where(["text_index @@ plainto_tsquery(?)", title])}
+end

db/development_structure.sql

@@ -367,6 +367,7 @@ CREATE TABLE dmails (
     body text NOT NULL,
     message_index tsvector NOT NULL,
     is_read boolean DEFAULT false NOT NULL,
+    is_deleted boolean DEFAULT false NOT NULL,
     created_at timestamp without time zone,
     updated_at timestamp without time zone
 );
@@ -691,6 +692,76 @@ CREATE SEQUENCE favorites_9_id_seq
 ALTER SEQUENCE favorites_9_id_seq OWNED BY favorites_9.id;
 
 
+--
+-- Name: forum_posts; Type: TABLE; Schema: public; Owner: -; Tablespace: 
+--
+
+CREATE TABLE forum_posts (
+    id integer NOT NULL,
+    topic_id integer NOT NULL,
+    creator_id integer NOT NULL,
+    body text NOT NULL,
+    text_index tsvector NOT NULL,
+    created_at timestamp without time zone,
+    updated_at timestamp without time zone
+);
+
+
+--
+-- Name: forum_posts_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE forum_posts_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MAXVALUE
+    NO MINVALUE
+    CACHE 1;
+
+
+--
+-- Name: forum_posts_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE forum_posts_id_seq OWNED BY forum_posts.id;
+
+
+--
+-- Name: forum_topics; Type: TABLE; Schema: public; Owner: -; Tablespace: 
+--
+
+CREATE TABLE forum_topics (
+    id integer NOT NULL,
+    creator_id integer NOT NULL,
+    title character varying(255) NOT NULL,
+    response_count integer DEFAULT 0 NOT NULL,
+    is_sticky boolean DEFAULT false NOT NULL,
+    is_locked boolean DEFAULT false NOT NULL,
+    text_index tsvector NOT NULL,
+    created_at timestamp without time zone,
+    updated_at timestamp without time zone
+);
+
+
+--
+-- Name: forum_topics_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE forum_topics_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MAXVALUE
+    NO MINVALUE
+    CACHE 1;
+
+
+--
+-- Name: forum_topics_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE forum_topics_id_seq OWNED BY forum_topics.id;
+
+
 --
 -- Name: pool_versions; Type: TABLE; Schema: public; Owner: -; Tablespace: 
 --
@@ -1360,6 +1431,20 @@ ALTER TABLE favorites_8 ALTER COLUMN id SET DEFAULT nextval('favorites_8_id_seq'
 ALTER TABLE favorites_9 ALTER COLUMN id SET DEFAULT nextval('favorites_9_id_seq'::regclass);
 
 
+--
+-- Name: id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE forum_posts ALTER COLUMN id SET DEFAULT nextval('forum_posts_id_seq'::regclass);
+
+
+--
+-- Name: id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE forum_topics ALTER COLUMN id SET DEFAULT nextval('forum_topics_id_seq'::regclass);
+
+
 --
 -- Name: id; Type: DEFAULT; Schema: public; Owner: -
 --
@@ -1610,6 +1695,22 @@ ALTER TABLE ONLY favorites_9
     ADD CONSTRAINT favorites_9_pkey PRIMARY KEY (id);
 
 
+--
+-- Name: forum_posts_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace: 
+--
+
+ALTER TABLE ONLY forum_posts
+    ADD CONSTRAINT forum_posts_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: forum_topics_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace: 
+--
+
+ALTER TABLE ONLY forum_topics
+    ADD CONSTRAINT forum_topics_pkey PRIMARY KEY (id);
+
+
 --
 -- Name: pool_versions_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace: 
 --
@@ -2002,6 +2103,41 @@ CREATE INDEX index_favorites_9_on_post_id ON favorites_9 USING btree (post_id);
 CREATE INDEX index_favorites_9_on_user_id ON favorites_9 USING btree (user_id);
 
 
+--
+-- Name: index_forum_posts_on_creator_id; Type: INDEX; Schema: public; Owner: -; Tablespace: 
+--
+
+CREATE INDEX index_forum_posts_on_creator_id ON forum_posts USING btree (creator_id);
+
+
+--
+-- Name: index_forum_posts_on_text_index; Type: INDEX; Schema: public; Owner: -; Tablespace: 
+--
+
+CREATE INDEX index_forum_posts_on_text_index ON forum_posts USING gin (text_index);
+
+
+--
+-- Name: index_forum_posts_on_topic_id; Type: INDEX; Schema: public; Owner: -; Tablespace: 
+--
+
+CREATE INDEX index_forum_posts_on_topic_id ON forum_posts USING btree (topic_id);
+
+
+--
+-- Name: index_forum_topics_on_creator_id; Type: INDEX; Schema: public; Owner: -; Tablespace: 
+--
+
+CREATE INDEX index_forum_topics_on_creator_id ON forum_topics USING btree (creator_id);
+
+
+--
+-- Name: index_forum_topics_on_text_index; Type: INDEX; Schema: public; Owner: -; Tablespace: 
+--
+
+CREATE INDEX index_forum_topics_on_text_index ON forum_topics USING gin (text_index);
+
+
 --
 -- Name: index_pool_versions_on_pool_id; Type: INDEX; Schema: public; Owner: -; Tablespace: 
 --
@@ -2235,6 +2371,26 @@ CREATE TRIGGER trigger_dmails_on_update
     EXECUTE PROCEDURE tsvector_update_trigger('message_index', 'pg_catalog.english', 'title', 'body');
 
 
+--
+-- Name: trigger_forum_posts_on_update; Type: TRIGGER; Schema: public; Owner: -
+--
+
+CREATE TRIGGER trigger_forum_posts_on_update
+    BEFORE INSERT OR UPDATE ON forum_posts
+    FOR EACH ROW
+    EXECUTE PROCEDURE tsvector_update_trigger('text_index', 'pg_catalog.english', 'body');
+
+
+--
+-- Name: trigger_forum_topics_on_update; Type: TRIGGER; Schema: public; Owner: -
+--
+
+CREATE TRIGGER trigger_forum_topics_on_update
+    BEFORE INSERT OR UPDATE ON forum_topics
+    FOR EACH ROW
+    EXECUTE PROCEDURE tsvector_update_trigger('text_index', 'pg_catalog.english', 'title');
+
+
 --
 -- Name: trigger_posts_on_tag_index_update; Type: TRIGGER; Schema: public; Owner: -
 --
@@ -2303,4 +2459,8 @@ INSERT INTO schema_migrations (version) VALUES ('20100215225710');
 
 INSERT INTO schema_migrations (version) VALUES ('20100215230642');
 
-INSERT INTO schema_migrations (version) VALUES ('20100219230537');
+INSERT INTO schema_migrations (version) VALUES ('20100219230537');
+
+INSERT INTO schema_migrations (version) VALUES ('20100221003655');
+
+INSERT INTO schema_migrations (version) VALUES ('20100221005812');

db/migrate/20100221003655_create_forum_topics.rb

@@ -0,0 +1,22 @@
+class CreateForumTopics < ActiveRecord::Migration
+  def self.up
+    create_table :forum_topics do |t|
+      t.column :creator_id, :integer, :null => false
+      t.column :title, :string, :null => false
+      t.column :response_count, :integer, :null => false, :default => 0
+      t.column :is_sticky, :boolean, :null => false, :default => false
+      t.column :is_locked, :boolean, :null => false, :default => false
+      t.column :text_index, "tsvector", :null => false
+      t.timestamps
+    end
+    
+    add_index :forum_topics, :creator_id
+
+    execute "CREATE INDEX index_forum_topics_on_text_index ON forum_topics USING GIN (text_index)"
+    execute "CREATE TRIGGER trigger_forum_topics_on_update BEFORE INSERT OR UPDATE ON forum_topics FOR EACH ROW EXECUTE PROCEDURE tsvector_update_trigger('text_index', 'pg_catalog.english', 'title')"
+  end
+
+  def self.down
+    drop_table :forum_topics
+  end
+end

db/migrate/20100221005812_create_forum_posts.rb

@@ -0,0 +1,20 @@
+class CreateForumPosts < ActiveRecord::Migration
+  def self.up
+    create_table :forum_posts do |t|
+      t.column :topic_id, :integer, :null => false
+      t.column :creator_id, :integer, :null => false
+      t.column :body, :text, :null => false
+      t.column :text_index, "tsvector", :null => false
+      t.timestamps
+    end
+
+    add_index :forum_posts, :topic_id    
+    add_index :forum_posts, :creator_id
+    execute "CREATE INDEX index_forum_posts_on_text_index ON forum_posts USING GIN (text_index)"
+    execute "CREATE TRIGGER trigger_forum_posts_on_update BEFORE INSERT OR UPDATE ON forum_posts FOR EACH ROW EXECUTE PROCEDURE tsvector_update_trigger('text_index', 'pg_catalog.english', 'body')"
+  end
+
+  def self.down
+    drop_table :forum_posts
+  end
+end

test/factories/forum_post.rb

@@ -0,0 +1,4 @@
+Factory.define(:forum_post) do |f|
+  f.creator {|x| x.association(:user)}
+  f.body {Faker::Lorem.sentences}
+end

test/factories/forum_topic.rb

@@ -0,0 +1,6 @@
+Factory.define(:forum_topic) do |f|
+  f.creator {|x| x.association(:user)}
+  f.title {Faker::Lorem.words}
+  f.is_sticky false
+  f.is_locked false
+end

test/fixtures/forum_posts.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
+
+# This model initially had no columns defined.  If you add columns to the
+# model remove the '{}' from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+#  column: value

test/fixtures/forum_topics.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
+
+# This model initially had no columns defined.  If you add columns to the
+# model remove the '{}' from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+#  column: value

test/unit/forum_post_test.rb

@@ -0,0 +1,13 @@
+require File.dirname(__FILE__) + '/../test_helper'
+
+class ForumPostTest < ActiveSupport::TestCase
+  context "A forum post" do
+    should "update its parent when saved" do
+      topic = Factory.create(:forum_topic)
+      sleep 2
+      post = Factory.create(:forum_post, :topic_id => topic.id)
+      topic.reload
+      assert(topic.updated_at > 1.second.ago)
+    end
+  end
+end

test/unit/forum_topic_test.rb

@@ -0,0 +1,4 @@
+require File.dirname(__FILE__) + '/../test_helper'
+
+class ForumTopicTest < ActiveSupport::TestCase
+end