* migration for statements + statements with it's various subtypes

* updated schema
* updated .gitignore to ignore emacs temp files
* added .gitignore to tmp/ directory so that it makes it into git

.gitignore

@@ -8,3 +8,7 @@ public/system/avatars/
 /echologic.ipr
 /echologic.iws
 db/*.sqlite3
+*~
+.\#*
+\#*
+*\#

app/models/argument.rb

@@ -0,0 +1,2 @@
+class Argument < Statement # abstract class
+end

app/models/contra_argument.rb

@@ -0,0 +1,2 @@
+class ContraArgument < Argument
+end

app/models/improvement_proposal.rb

@@ -0,0 +1,2 @@
+class ImprovementProposal < Proposal
+end

app/models/pro_argument.rb

@@ -0,0 +1,2 @@
+class ProArgument < Argument
+end

app/models/proposal.rb

@@ -0,0 +1,2 @@
+class Proposal < Statement
+end

app/models/question.rb

@@ -0,0 +1,2 @@
+class Question < Statement
+end

app/models/statement.rb

@@ -0,0 +1,8 @@
+class Statement < ActiveRecord::Base
+  belongs_to :user
+  acts_as_tree
+
+  validates_presence_of :title
+  validates_presence_of :text
+  validates_presence_of :user_id
+end

db/migrate/20091114161154_create_statements.rb

@@ -0,0 +1,17 @@
+class CreateStatements < ActiveRecord::Migration
+  def self.up
+    create_table :statements do |t|
+      t.string :title
+      t.text :text
+      t.string :type
+      t.integer :user_id
+      t.boolean :activated
+      t.integer :parent_id
+      t.integer :root_id
+    end
+  end
+
+  def self.down
+    drop_table :statements
+  end
+end

db/schema.rb

@@ -9,7 +9,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20091102155547) do
+ActiveRecord::Schema.define(:version => 20091114161154) do
 
   create_table "concernments", :force => true do |t|
     t.integer  "user_id"
@@ -86,6 +86,16 @@
     t.datetime "updated_at"
   end
 
+  create_table "statements", :force => true do |t|
+    t.string  "title"
+    t.text    "text"
+    t.string  "type"
+    t.integer "user_id"
+    t.boolean "activated"
+    t.integer "parent_id"
+    t.integer "root_id"
+  end
+
   create_table "tags", :force => true do |t|
     t.string   "value"
     t.datetime "created_at"

tmp/.gitignore

@@ -0,0 +1 @@
+*