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"""
Related posts plugin for Pelican
================================
Adds related_posts variable to article's context
"""
from pelican import signals
from collections import Counter
def add_related_posts(generator):
# get the max number of entries from settings
# or fall back to default (5)
numentries = generator.settings.get('RELATED_POSTS_MAX', 5)
for article in generator.articles:
# no tag, no relation
if not hasattr(article, 'tags'):
continue
# score = number of common tags
scores = Counter()
for tag in article.tags:
scores += Counter(generator.tags[tag])
# remove itself
scores.pop(article)
article.related_posts = [other for other, count
in scores.most_common(numentries)]
def register():
signals.article_generator_finalized.connect(add_related_posts)
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