87 lines
2.4 KiB
Python
87 lines
2.4 KiB
Python
#!/usr/bin/env python
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# -*- mode: python; indent-tabs-mode: nil; -*- coding: utf-8 -*-
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"""
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SuggestionsPage.py
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Copyright 2012 by Marcello Perathoner
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Distributable under the GNU General Public License Version 3 or newer.
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The search suggestions page.
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"""
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from __future__ import unicode_literals
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import logging
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import cherrypy
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from libgutenberg.GutenbergDatabase import DatabaseError
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import BaseSearcher
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import Page
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class Suggestions (Page.Page):
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""" Output the search suggestions page. """
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sql_searcher = BaseSearcher.SQLSearcher ()
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def index (self, **dummy_kwargs):
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""" Output the suggestions page. """
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cherrypy.request.params['format'] = 'json' # override user
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os = BaseSearcher.OpenSearch ()
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os.sort_order = 'nentry'
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os.start_index = 1
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os.items_per_page = 5
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if os.format != 'json':
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raise cherrypy.HTTPError (400, 'Bad Request. Unknown format.')
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if len (os.query) == 0:
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raise cherrypy.HTTPError (400, 'Bad Request. No query.')
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last_word = os.query.split ()[-1]
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if len (last_word) < 4:
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raise cherrypy.HTTPError (400, 'Bad Request. Query too short.')
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# ok. request looks sane. process it
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os.log_request ('suggestions')
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os.f_format_title = os.format_suggestion
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os.f_format_subtitle = os.format_none
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os.f_format_extra = os.format_none
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os.f_format_url = os.format_none
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os.f_format_thumb_url = os.format_none
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os.f_format_icon = os.format_none
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sql = BaseSearcher.SQLStatement ()
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# prepare inner query
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sql.query = 'SELECT tsvec'
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sql.from_ = ('books', )
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sql.fulltext ('books.tsvec', os.query)
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inner_sql_query = self.sql_searcher.mogrify (os, sql)
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sql.query = "SELECT substr (word, 2) AS title FROM ts_stat ( %(inner)s )"
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sql.from_ = ()
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sql.params['inner'] = inner_sql_query
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sql.where = ["word ~* %(re_word)s"]
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sql.params['re_word'] = '^0' + last_word
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try:
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os = self.sql_searcher.search (os, sql)
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except DatabaseError as what:
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cherrypy.log ("SQL Error: " + str (what),
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context = 'REQUEST', severity = logging.ERROR)
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raise cherrypy.HTTPError (500, 'Internal Server Error.')
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os.template = os.page = 'results'
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os.finalize ()
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return self.format (os)
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