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This commit is contained in:
zhitomirskiyi 2011-01-29 18:46:05 -08:00
parent 05cab33dad
commit 5d3e08227e
1 changed files with 10 additions and 10 deletions
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20
db/migrate/20110110023610_notification_multiple_people.rb
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@ -16,7 +16,7 @@ class NotificationMultiplePeople < ActiveRecord::Migration
" FROM notifications"
#update the notifications to reference the post
execute "UPDATE notifications, comments" +
execute "UPDATE notifications, comments " +
"SET notifications.target_id = comments.post_id, " +
"target_type = 'Post' " +
"WHERE (notifications.target_id = comments.id " +
@ -24,20 +24,20 @@ class NotificationMultiplePeople < ActiveRecord::Migration
"OR notifications.action = 'also_commented'))"
#select all the notifications to keep
execute "CREATE TEMPORARY TABLE keep_table" +
execute "CREATE TEMPORARY TABLE keep_table " +
"(SELECT id as keep_id, target_type , target_id , recipient_id , action as keep_id " +
"FROM notifications WHERE action = 'comment_on_post' OR action = 'also_commented'" +
"GROUP BY target_type , target_id , recipient_id , action);"
"FROM notifications WHERE action = 'comment_on_post' OR action = 'also_commented' " +
"GROUP BY target_type , target_id , recipient_id , action) "
#get a table of with ids of the notifications that need to be deleted and with the ones that need
#to replace them
execute "CREATE TEMPORARY TABLE keep_delete " +
"( SELECT n1.keep_id, n2.id as delete_id, " +
"n1.target_type, n1.target_id, n1.recipient_id, n1.action" +
"FROM keep_table n1, notifications n2" +
"n1.target_type, n1.target_id, n1.recipient_id, n1.action " +
"FROM keep_table n1, notifications n2 " +
"WHERE n1.keep_id != n2.id " +
"AND n1.target_type = n2.target_type AND n1.target_id = n2.target_id" +
"AND n1.recipient_id = n2.recipient_id AND n1.action = n2.action"
"AND n1.recipient_id = n2.recipient_id AND n1.action = n2.action "
"AND (n1.action = 'comment_on_post' OR n1.action = 'also_commented'))"
#have the notifications actors reference the notifications that need to be kept
@ -46,9 +46,9 @@ class NotificationMultiplePeople < ActiveRecord::Migration
"WHERE notification_actors.notification_id = keep_delete.delete_id"
#delete all the notifications that need to be deleted
execute "DELETE notifications.*" +
"FROM notifications, keep_delete" +
"WHERE notifications.id = keep_delete.delete_id"
execute "DELETE notifications.* " +
"FROM notifications, keep_delete " +
"WHERE notifications.id = keep_delete.delete_id "
remove_column :notification, :actor_id