添加组织表和组织成员表

db/migrate/20151102083844_drop_organization.rb

@@ -0,0 +1,8 @@
+class DropOrganization < ActiveRecord::Migration
+  def up
+    drop_table :organizations
+  end
+
+  def down
+  end
+end

db/migrate/20151102084419_create_organization.rb

@@ -0,0 +1,18 @@
+class CreateOrganization < ActiveRecord::Migration
+  def up
+    create_table :organizations do |t|
+      t.string :name
+      t.text :description
+      t.integer :creator_id
+      t.integer :home_id
+      t.string :domain
+      t.boolean :is_public
+
+      t.timestamps
+    end
+  end
+
+  def down
+    drop_table :organizations
+  end
+end

db/migrate/20151102090519_create_org_members.rb

@@ -0,0 +1,14 @@
+class CreateOrgMembers < ActiveRecord::Migration
+  def up
+    create_table :org_members do |t|
+      t.integer :user_id
+      t.integer :organization_id
+      t.string :role
+
+    end
+  end
+
+  def down
+    drop_table :org_members
+  end
+end