Adding some diary fixtures and test stubs

[rails.git] / db / migrate / 020_add_changesets.rb

diff --git a/db/migrate/020_add_changesets.rb b/db/migrate/020_add_changesets.rb
index 40455ec688bea5dad2a0ea61bf8ffe8337571f74..772a5f20daf051aee38f3cb6e3a3c69ca96846ba 100644 (file)
--- a/db/migrate/020_add_changesets.rb
+++ b/db/migrate/020_add_changesets.rb
@@ -1,7 +1,9 @@
 class AddChangesets < ActiveRecord::Migration
+  @@conv_user_tables = ['current_nodes',
+  'current_relations', 'current_ways', 'nodes', 'relations', 'ways' ]
+  
   def self.up
     create_table "changesets", innodb_table do |t|
-      t.column "id",             :bigint,   :limit => 20, :null => false
       t.column "user_id",        :bigint,   :limit => 20, :null => false
       t.column "created_at",     :datetime,               :null => false
       t.column "open",           :boolean,                :null => false, :default => true
@@ -10,11 +12,7 @@ class AddChangesets < ActiveRecord::Migration
       t.column "min_lon",        :integer,                :null => true
       t.column "max_lon",        :integer,                :null => true
     end
-
-    add_primary_key "changesets", ["id"]
-    # FIXME add indexes?
-
-    change_column "changesets", "id", :bigint, :limit => 20, :null => false, :options => "AUTO_INCREMENT"
+    add_column :changesets, :id, :bigint_pk
 
     create_table "changeset_tags", innodb_table do |t|
       t.column "id", :bigint, :limit => 64, :null => false
@@ -23,10 +21,26 @@ class AddChangesets < ActiveRecord::Migration
     end
 
     add_index "changeset_tags", ["id"], :name => "changeset_tags_id_idx"
+    
+    #
+    # Initially we will have one changeset for every user containing 
+    # all edits up to the API change,  
+    # all the changesets will have the id of the user that made them.
+    # We need to generate a changeset for each user in the database
+    execute "INSERT INTO changesets (id, user_id, created_at, open)" + 
+      "SELECT id, id, creation_time, 0 from users;"
+
+    @@conv_user_tables.each { |tbl|
+      rename_column tbl, :user_id, :changeset_id
+      #foreign keys too
+      add_foreign_key tbl, [:changeset_id], :changesets, [:id]
+    }
   end
 
   def self.down
-    drop_table "changesets"
-    drop_table "changeset_tags"
+    # It's not easy to generate the user ids from the changesets
+    raise IrreversibleMigration.new
+    #drop_table "changesets"
+    #drop_table "changeset_tags"
   end
 end