Changeset 146 for trunk/examples/blog.rb

Timestamp:

08/15/2006 13:33:54 (2 years ago)

Author:

why

Message:

• lib/camping/db.rb: The create_schema method takes some options now. The :assume option lets you force a default version if no migration table is found. So, if you know that the user has some of the right tables (you deduce that they have version 1.0 tables,) then you can call create_schema :assume => 1.0 and the 1.0 (and below) upgrades will be skipped.
  
• examples/: altered all the examples to use migrations and create_schema :assume.
  

Files:

• trunk/examples/blog.rb (modified) (2 diffs)

trunk/examples/blog.rb

@@ -13 +13 @@
 
 module Blog::Models
-    def self.schema(&block)
-        @@schema = block if block_given?
-        @@schema
-    end
-  
     class Post < Base; belongs_to :user; end
     class Comment < Base; belongs_to :user; end
     class User < Base; end
-end
-
-Blog::Models.schema do
-    create_table :blog_posts, :force => true do |t|
-      t.column :id,       :integer, :null => false
-      t.column :user_id,  :integer, :null => false
-      t.column :title,    :string,  :limit => 255
-      t.column :body,     :text
-    end
-    create_table :blog_users, :force => true do |t|
-      t.column :id,       :integer, :null => false
-      t.column :username, :string
-      t.column :password, :string
-    end
-    create_table :blog_comments, :force => true do |t|
-      t.column :id,       :integer, :null => false
-      t.column :post_id,  :integer, :null => false
-      t.column :username, :string
-      t.column :body,     :text
-    end
-    execute "INSERT INTO blog_users (username, password) VALUES ('admin', 'camping')"
+
+    class CreateTheBasics < V 1.0
+      def self.up
+        create_table :blog_posts, :force => true do |t|
+          t.column :id,       :integer, :null => false
+          t.column :user_id,  :integer, :null => false
+          t.column :title,    :string,  :limit => 255
+          t.column :body,     :text
+        end
+        create_table :blog_users, :force => true do |t|
+          t.column :id,       :integer, :null => false
+          t.column :username, :string
+          t.column :password, :string
+        end
+        create_table :blog_comments, :force => true do |t|
+          t.column :id,       :integer, :null => false
+          t.column :post_id,  :integer, :null => false
+          t.column :username, :string
+          t.column :body,     :text
+        end
+        User.create :username => 'admin', :password => 'camping'
+      end
+      def self.down
+        drop_table :blog_posts
+        drop_table :blog_users
+        drop_table :blog_comments
+      end
+    end
 end
 
@@ -267 +269 @@
 def Blog.create
     Camping::Models::Session.create_schema
-    unless Blog::Models::Post.table_exists?
-        ActiveRecord::Schema.define(&Blog::Models.schema)
-    end
+    Blog::Models.create_schema :assume => (Blog::Models::Post.table_exists? ? 1.0 : 0.0)
 end