25 lines
864 B
Python
25 lines
864 B
Python
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from django.core.cache import cache
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from django.template.defaultfilters import truncatewords
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from judge.jinja2.markdown import markdown
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from judge.jinja2.reference import reference
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def generate_opengraph(cache_key, data, style):
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metadata = cache.get(cache_key)
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if metadata is None:
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description = None
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tree = reference(markdown(data, style)).tree
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for p in tree.iterfind('.//p'):
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text = p.text_content().strip()
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if text:
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description = text
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break
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if description:
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for remove in (r'\[', r'\]', r'\(', r'\)'):
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description = description.replace(remove, '')
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img = tree.xpath('.//img')
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metadata = truncatewords(description, 60), img[0].get('src') if img else None
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cache.set(cache_key, metadata, 86400)
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return metadata
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