varia.website/plugins/representative_image/representative_image.py

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2018-02-01 14:46:15 +01:00
import six
from pelican import signals
from pelican.contents import Article, Draft, Page
from pelican.generators import ArticlesGenerator
from bs4 import BeautifulSoup
def images_extraction(instance):
representativeImage = None
if type(instance) in (Article, Draft, Page):
if 'image' in instance.metadata:
representativeImage = instance.metadata['image']
# Process Summary:
# If summary contains images, extract one to be the representativeImage and remove images from summary
soup = BeautifulSoup(instance.summary, 'html.parser')
images = soup.find_all('img')
for i in images:
if not representativeImage:
representativeImage = i['src']
i.extract()
if len(images) > 0:
# set _summary field which is based on metadata. summary field is only based on article's content and not settable
instance._summary = six.text_type(soup)
# If there are no image in summary, look for it in the content body
if not representativeImage:
soup = BeautifulSoup(instance._content, 'html.parser')
imageTag = soup.find('img')
if imageTag:
representativeImage = imageTag['src']
# Set the attribute to content instance
instance.featured_image = representativeImage
def run_plugin(generators):
for generator in generators:
if isinstance(generator, ArticlesGenerator):
for article in generator.articles:
images_extraction(article)
def register():
try:
signals.all_generators_finalized.connect(run_plugin)
except AttributeError:
# NOTE: This results in #314 so shouldn't really be relied on
# https://github.com/getpelican/pelican-plugins/issues/314
signals.content_object_init.connect(images_extraction)