canvas-lms/db/migrate/20111108150000_ensure_submi...

92 lines
3.8 KiB
Ruby

class EnsureSubmissionsForDiscussions < ActiveRecord::Migration
def self.up
# entries from graded topics where the poster is enrolled as a student in
# the topic's assignment's course and there's no current submission for the
# poster and that assignment, but only one entry per (topic, user) pair
entries = DiscussionEntry.find_by_sql(<<-SQL)
SELECT DISTINCT discussion_entries.discussion_topic_id, discussion_entries.user_id
FROM discussion_topics
INNER JOIN assignments ON
assignments.id=discussion_topics.assignment_id AND
assignments.context_type='Course' AND
assignments.submission_types='discussion_topic'
INNER JOIN discussion_entries ON
discussion_entries.discussion_topic_id=discussion_topics.id AND
discussion_entries.workflow_state!='deleted'
INNER JOIN enrollments ON
enrollments.course_id=assignments.context_id AND
enrollments.user_id=discussion_entries.user_id AND
enrollments.type='StudentEnrollment' AND
enrollments.workflow_state NOT IN ('deleted', 'completed', 'rejected', 'inactive')
LEFT JOIN submissions ON
submissions.assignment_id=assignments.id AND
submissions.user_id=discussion_entries.user_id AND
submissions.submission_type='discussion_topic'
WHERE
discussion_topics.workflow_state='active' AND
submissions.id IS NULL
SQL
touched_course_ids = [].to_set
touched_user_ids = [].to_set
# don't touch the user on each submission, we'll do them in bulk later
Submission.suspend_callbacks(:touch_user) do
entries.each do |entry|
# streamlined entry.discussiont_topic.ensure_submission(entry.user)
assignment = Assignment.find_by_sql(<<-SQL).first
SELECT assignments.id, assignments.group_category_id, assignments.context_id
FROM assignments
INNER JOIN discussion_topics ON
discussion_topics.assignment_id=assignments.id AND
discussion_topics.id=#{entry.discussion_topic_id}
LIMIT 1
SQL
# even if there's a group, we're only doing the one student on this pass,
# since other group members will have their own row from the main query.
# but we still need to know the group
group = Group.find_by_sql(<<-SQL).first if assignment.group_category_id
SELECT groups.id FROM groups
INNER JOIN group_memberships ON
group_memberships.group_id=groups.id AND
group_memberships.workflow_state!='deleted' AND
group_memberships.user_id=#{entry.user_id}
WHERE
groups.workflow_state!='deleted' AND
groups.group_category_id=#{assignment.group_category_id}
LIMIT 1
SQL
group_id = group && group.id
homework = Submission.where(assignment_id: assignment.id, user_id: entry.user_id).first_or_initialize
homework.grade_matches_current_submission = homework.score ? false : true
homework.attributes = {
:attachment => nil,
:processed => false,
:process_attempts => 0,
:workflow_state => "submitted",
:group_id => group_id,
:submission_type => 'discussion_topic'
}
# don't broadcast due to these fixes, period.
homework.with_versioning(:explicit => true) do
homework.save_without_broadcast
end
# set aside to do bulk course- and user-touch below
touched_course_ids << assignment.context_id
touched_user_ids << entry.user_id
end
end
# touch all the courses and users
Course.where(:id => touched_course_ids.to_a).update_all(:updated_at => Time.now.utc) unless touched_course_ids.empty?
User.where(:id => touched_user_ids.to_a).update_all(:updated_at => Time.now.utc) unless touched_user_ids.empty?
end
def self.down
end
end