Make migrations compatible with postgres

db/migrate/20110125190034_unique_index_on_profile.rb

@@ -5,9 +5,9 @@ class UniqueIndexOnProfile < ActiveRecord::Migration
     ["id", "created_at", "updated_at"].each{|n| columns.delete(n)}
 
     sql = <<-SQL
-    SELECT `profiles`.person_id FROM `profiles`
+    SELECT profiles.person_id FROM profiles
       GROUP BY #{columns.join(',')}
-        HAVING COUNT(*)>1 AND `profiles`.person_id IS NOT NULL;
+        HAVING COUNT(*)>1 AND profiles.person_id IS NOT NULL;
     SQL
     result = conn.execute(sql)
     duplicate_person_ids = result.to_a.flatten
@@ -15,13 +15,13 @@ class UniqueIndexOnProfile < ActiveRecord::Migration
     undesired_profile_ids = []
     duplicate_person_ids.each do |person_id|
       profile_ids = conn.execute("
-        SELECT `profiles`.id FROM `profiles`
-        WHERE `profiles`.person_id = #{person_id};").to_a.flatten
+        SELECT profiles.id FROM profiles
+        WHERE profiles.person_id = #{person_id};").to_a.flatten
       profile_ids.pop
       undesired_profile_ids.concat(profile_ids)
     end
-    conn.execute("DELETE FROM `profiles`
-      WHERE `profiles`.id IN (#{undesired_profile_ids.join(",")});") unless undesired_profile_ids.empty?
+    conn.execute("DELETE FROM profiles
+      WHERE profiles.id IN (#{undesired_profile_ids.join(",")});") unless undesired_profile_ids.empty?
 
     remove_index :profiles, :person_id
     add_index    :profiles, :person_id, :unique => true

db/migrate/20110126015407_add_invitation_service_and_invitation_identifier_to_user.rb

@@ -3,7 +3,7 @@ class AddInvitationServiceAndInvitationIdentifierToUser < ActiveRecord::Migratio
     add_column(:users, :invitation_service, :string)
     add_column(:users, :invitation_identifier, :string)
 
-    execute("UPDATE `users` SET invitation_service='email', invitation_identifier= email WHERE invitation_token IS NOT NULL;")
+    execute("UPDATE users SET invitation_service='email', invitation_identifier= email WHERE invitation_token IS NOT NULL;")
   end
 
   def self.down

db/migrate/20110126200714_add_contacts_visible.rb

@@ -4,7 +4,7 @@ class AddContactsVisible < ActiveRecord::Migration
     add_index :aspects, [:user_id, :contacts_visible]
 
     ActiveRecord::Base.connection.execute <<-SQL
-    UPDATE `aspects`
+    UPDATE aspects
       SET contacts_visible = false
       WHERE contacts_visible IS NULL
     SQL

db/migrate/20110130072907_notification_multiple_people.rb

@@ -10,6 +10,8 @@ class NotificationMultiplePeople < ActiveRecord::Migration
     add_index :notification_actors, [:notification_id, :person_id] , :unique => true
     add_index :notification_actors, :person_id  ## if i am not mistaken we don't need this one because we won't query person.notifications
 
+    note_ids = execute('select id from notifications').to_a
+    unless note_ids.empty?
       #make the notification actors table
       execute "INSERT INTO notification_actors (notification_id, person_id) " +
         " SELECT id , actor_id " +
@@ -55,6 +57,7 @@ class NotificationMultiplePeople < ActiveRecord::Migration
                        "notifications.target_id = keep_delete.target_id AND "+
                        "notifications.recipient_id = keep_delete.recipient_id AND "+
                        "notifications.action = keep_delete.action"
+    end
 
 
     remove_column :notifications, :actor_id

db/migrate/20110211021926_fix_target_on_notification.rb

@@ -1,16 +1,18 @@
 class FixTargetOnNotification < ActiveRecord::Migration
   def self.up
+    note_ids = execute('select id from notifications').to_a
+    unless note_ids.empty?
       execute("UPDATE notifications " +
-"SET target_type='Post' " + 
-"WHERE action = 'comment_on_post' OR action = 'also_commented'")
+  "SET target_type='Post' " +
+  "WHERE action = 'comment_on_post' OR action = 'also_commented'")
 
       execute("UPDATE notifications " +
-"SET target_type='Request' " + 
-"WHERE action = 'new_request' OR action = 'request_accepted'")
+  "SET target_type='Request' " +
+  "WHERE action = 'new_request' OR action = 'request_accepted'")
 
       execute("UPDATE notifications " +
-"SET target_type='Mention' " + 
-"WHERE action = 'mentioned'")
+  "SET target_type='Mention' " +
+  "WHERE action = 'mentioned'")
 
       execute("create temporary table t1 "+
       "(select notifications.id as n_id " +
@@ -20,6 +22,7 @@ class FixTargetOnNotification < ActiveRecord::Migration
 
       execute("DELETE notifications.* FROM notifications, t1 WHERE notifications.id = t1.n_id")
     end
+  end
 
   def self.down
   end

db/migrate/20110211204804_unique_index_post_visibilities.rb

@@ -1,5 +1,7 @@
 class UniqueIndexPostVisibilities < ActiveRecord::Migration
   def self.up
+    visibility_ids = execute('select id from post_visibilities').to_a
+    unless visibility_ids.empty?
       sql = <<-SQL
       SELECT `post_visibilities`.post_id, `post_visibilities`.aspect_id FROM `post_visibilities`
         GROUP BY post_id, aspect_id
@@ -24,6 +26,7 @@ class UniqueIndexPostVisibilities < ActiveRecord::Migration
 
       new_result = execute(sql)
       raise "Not all violating visibilities deleted, try migrating again if this is the first occurence" unless new_result.to_a.empty?
+    end
 
     remove_index :post_visibilities, [:aspect_id, :post_id]
     add_index :post_visibilities, [:aspect_id, :post_id], :unique => true