97 lines
3.7 KiB
Python
97 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2014-2016 Andrey Antukh <niwi@niwi.nz>
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# Copyright (C) 2014-2016 Jesús Espino <jespinog@gmail.com>
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# Copyright (C) 2014-2016 David Barragán <bameda@dbarragan.com>
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# Copyright (C) 2014-2016 Alejandro Alonso <alejandro.alonso@kaleidos.net>
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from django.apps import apps
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from django.conf import settings
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from taiga.base.utils.db import to_tsquery
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from taiga.projects.userstories.utils import attach_total_points
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MAX_RESULTS = getattr(settings, "SEARCHES_MAX_RESULTS", 150)
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def search_epics(project, text):
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model = apps.get_model("epics", "Epic")
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queryset = model.objects.filter(project_id=project.pk)
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table = "epics_epic"
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return _search_items(queryset, table, text)
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def search_user_stories(project, text):
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model = apps.get_model("userstories", "UserStory")
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queryset = model.objects.filter(project_id=project.pk)
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table = "userstories_userstory"
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return _search_items(queryset, table, text)
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def search_tasks(project, text):
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model = apps.get_model("tasks", "Task")
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queryset = model.objects.filter(project_id=project.pk)
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table = "tasks_task"
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return _search_items(queryset, table, text)
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def search_issues(project, text):
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model = apps.get_model("issues", "Issue")
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queryset = model.objects.filter(project_id=project.pk)
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table = "issues_issue"
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return _search_items(queryset, table, text)
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def search_wiki_pages(project, text):
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model = apps.get_model("wiki", "WikiPage")
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queryset = model.objects.filter(project_id=project.pk)
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tsquery = "to_tsquery('english_nostop', %s)"
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tsvector = """
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setweight(to_tsvector('english_nostop', coalesce(wiki_wikipage.slug)), 'A') ||
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setweight(to_tsvector('english_nostop', coalesce(wiki_wikipage.content)), 'B')
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"""
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return _search_by_query(queryset, tsquery, tsvector, text)
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def _search_items(queryset, table, text):
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tsquery = "to_tsquery('english_nostop', %s)"
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tsvector = """
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setweight(to_tsvector('english_nostop',
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coalesce({table}.subject) || ' ' ||
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coalesce({table}.ref)), 'A') ||
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setweight(to_tsvector('english_nostop', coalesce(inmutable_array_to_string({table}.tags))), 'B') ||
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setweight(to_tsvector('english_nostop', coalesce({table}.description)), 'C')
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""".format(table=table)
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return _search_by_query(queryset, tsquery, tsvector, text)
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def _search_by_query(queryset, tsquery, tsvector, text):
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select = {
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"rank": "ts_rank({tsvector},{tsquery})".format(tsquery=tsquery,
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tsvector=tsvector),
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}
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order_by = ["-rank", ]
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where = ["{tsvector} @@ {tsquery}".format(tsquery=tsquery,
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tsvector=tsvector), ]
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if text:
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queryset = queryset.extra(select=select,
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select_params=[to_tsquery(text)],
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where=where,
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params=[to_tsquery(text)],
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order_by=order_by)
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queryset = attach_total_points(queryset)
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return queryset[:MAX_RESULTS]
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