36 lines
1.2 KiB
Ruby
36 lines
1.2 KiB
Ruby
#
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# Copyright (C) 2015 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 SubmissionCommentInteraction
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# returns an array mapping [user_id, author_id] => time of last submission
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# comment
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#
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# warning: user_id comes back as a string for some reason, so the actual
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# object looks like: {["3", 1]=>2015-02-03 22:52:51 UTC}
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def self.in_course_between(course, teacher_or_ids, student_or_ids)
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course.submission_comments.
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joins(:submission).
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group([:user_id, :author_id]).
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where({
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submission_comments: { author_id: teacher_or_ids },
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submissions: { user_id: student_or_ids }
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}).
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maximum(:created_at)
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end
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end
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