sg101: gpp/antispam/utils.py comparison

Implement #83: a string filter facility like NukeSeSentinel. It currently isn't hooked up to anything. Will do that in #84.

comparison

equal deleted inserted replaced

-:65016249bf35
+:28988cce138b
+"""Antispam utility functions other apps can use."""
+from django.core.cache import cache
+from antispam import SPAM_PHRASE_KEY
+from antispam.models import SpamPhrase
+def contains_spam(s):
+"""This function returns True if the supplied string s contains any spam
+phrases and False otherwise.
+"""
+phrases = _get_spam_phrases()
+for spam in phrases:
+if spam in s:
+return True
+return False
+def _get_spam_phrases():
+"""This function returns the current list of spam phrase strings.
+The strings are cached to avoid hitting the database.
+"""
+phrases = cache.get(SPAM_PHRASE_KEY)
+if phrases:
+return phrases
+phrases = SpamPhrase.objects.values_list('phrase', flat=True)
+cache.set(SPAM_PHRASE_KEY, phrases)
+return phrases

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