86 lines
3.9 KiB
Ruby
86 lines
3.9 KiB
Ruby
#
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# Copyright (C) 2018 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class AddLastCommentAtOnSubmissions < ActiveRecord::Migration[5.0]
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tag :predeploy
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def up
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add_column :submissions, :last_comment_at, :datetime
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execute("
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CREATE FUNCTION #{connection.quote_table_name("submission_comment_after_save_set_last_comment_at__tr_fn")} () RETURNS trigger AS $$
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BEGIN
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UPDATE #{Submission.quoted_table_name}
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SET last_comment_at = (
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SELECT MAX(submission_comments.created_at) FROM #{SubmissionComment.quoted_table_name}
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WHERE submission_comments.submission_id=submissions.id AND
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submission_comments.author_id <> submissions.user_id AND
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submission_comments.draft <> 't' AND
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submission_comments.provisional_grade_id IS NULL
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) WHERE id = NEW.submission_id;
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;")
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execute("
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CREATE FUNCTION #{connection.quote_table_name("submission_comment_after_delete_set_last_comment_at__tr_fn")} () RETURNS trigger AS $$
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BEGIN
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UPDATE #{Submission.quoted_table_name}
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SET last_comment_at = (
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SELECT MAX(submission_comments.created_at) FROM #{SubmissionComment.quoted_table_name}
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WHERE submission_comments.submission_id=submissions.id AND
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submission_comments.author_id <> submissions.user_id AND
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submission_comments.draft <> 't' AND
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submission_comments.provisional_grade_id IS NULL
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) WHERE id = OLD.submission_id;
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RETURN OLD;
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END;
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$$ LANGUAGE plpgsql;")
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execute("
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CREATE TRIGGER submission_comment_after_insert_set_last_comment_at__tr
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AFTER INSERT ON #{SubmissionComment.quoted_table_name}
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FOR EACH ROW
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WHEN (NEW.draft <> 't' AND NEW.provisional_grade_id IS NULL)
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EXECUTE PROCEDURE #{connection.quote_table_name("submission_comment_after_save_set_last_comment_at__tr_fn")}()")
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execute("
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CREATE TRIGGER submission_comment_after_update_set_last_comment_at__tr
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AFTER UPDATE OF draft, provisional_grade_id ON #{SubmissionComment.quoted_table_name}
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FOR EACH ROW
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EXECUTE PROCEDURE #{connection.quote_table_name("submission_comment_after_save_set_last_comment_at__tr_fn")}()")
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execute("
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CREATE TRIGGER submission_comment_after_delete_set_last_comment_at__tr
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AFTER DELETE ON #{SubmissionComment.quoted_table_name}
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FOR EACH ROW
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WHEN (OLD.draft <> 't' AND OLD.provisional_grade_id IS NULL)
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EXECUTE PROCEDURE #{connection.quote_table_name("submission_comment_after_delete_set_last_comment_at__tr_fn")}()")
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end
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def down
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execute("DROP TRIGGER IF EXISTS submission_comment_after_insert_set_last_comment_at__tr ON #{SubmissionComment.quoted_table_name}")
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execute("DROP TRIGGER IF EXISTS submission_comment_after_update_set_last_comment_at__tr ON #{SubmissionComment.quoted_table_name}")
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execute("DROP TRIGGER IF EXISTS submission_comment_after_delete_set_last_comment_at__tr ON #{SubmissionComment.quoted_table_name}")
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execute("DROP FUNCTION IF EXISTS #{connection.quote_table_name("submission_comment_after_saves_set_last_comment_at__tr_fn")}()")
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execute("DROP FUNCTION IF EXISTS #{connection.quote_table_name("submission_comment_after_delete_set_last_comment_at__tr_fn")}()")
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remove_column :submissions, :last_comment_at
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end
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end
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