forum_modules/pgfulltext/handlers.py

   1 import re
   2 from django.db import connection, transaction
   3 from django.db.models import Q
   4 from forum.models.question import Question, QuestionManager
   5 from forum.models.node import Node
   6 from forum.modules import decorate
   7
   8 word_re = re.compile(r'\w+', re.UNICODE)
   9
  10 @decorate(QuestionManager.search, needs_origin=False)
  11 def question_search(self, keywords):
  12     tsquery = " | ".join(word_re.findall(keywords))
  13     ilike = keywords + u"%%"
  14
  15     return True, self.extra(
  16             tables = ['forum_rootnode_doc'],
  17             select={
  18             'ranking': """
  19                                 rank_exact_matches(ts_rank_cd('{0.1, 0.2, 0.8, 1.0}'::float4[], "forum_rootnode_doc"."document", to_tsquery('english', %s), 32))
  20                                 """,
  21             },
  22             where=["""
  23                            "forum_rootnode_doc"."node_id" = "forum_node"."id" AND ("forum_rootnode_doc"."document" @@ to_tsquery('english', %s) OR
  24                            "forum_node"."title" ILIKE %s)
  25                            """],
  26             params=[tsquery, ilike],
  27             select_params=[tsquery],
  28             )
  29
  30
  31 def delete_docs(node):
  32     cursor = connection.cursor()
  33     cursor.execute("DELETE FROM forum_rootnode_doc WHERE node_id = %s" % (node.id))
  34
  35     for n in node.children.all():
  36         delete_docs(n)
  37
  38
  39 #@decorate(Node.delete)
  40 def delete(origin, self, *args, **kwargs):
  41     delete_docs(self)
  42     transaction.commit_unless_managed()
  43     origin(self, *args, **kwargs)
  44
  45