import re import logging import sqlalchemy from sqlalchemy import func from collections import Counter from bootstrap import db from .abstract import AbstractController from lib.article_utils import process_filters from web.controllers import CategoryController, FeedController from web.models import Article logger = logging.getLogger(__name__) class ArticleController(AbstractController): _db_cls = Article def challenge(self, ids): """Will return each id that wasn't found in the database.""" for id_ in ids: if self.read(**id_).first(): continue yield id_ def count_by_category(self, **filters): return self._count_by(Article.category_id, filters) def count_by_feed(self, **filters): return self._count_by(Article.feed_id, filters) def count_by_user_id(self, **filters): return dict(db.session.query(Article.user_id, func.count(Article.id)) .filter(*self._to_filters(**filters)) .group_by(Article.user_id).all()) def create(self, **attrs): # handling special denorm for article rights assert 'feed_id' in attrs, "must provide feed_id when creating article" feed = FeedController( attrs.get('user_id', self.user_id)).get(id=attrs['feed_id']) if 'user_id' in attrs: assert feed.user_id == attrs['user_id'] or self.user_id is None, \ "no right on feed %r" % feed.id attrs['user_id'], attrs['category_id'] = feed.user_id, feed.category_id skipped, read, liked = process_filters(feed.filters, attrs) if skipped: return None article = super().create(**attrs) return article def update(self, filters, attrs): user_id = attrs.get('user_id', self.user_id) if 'feed_id' in attrs: feed = FeedController().get(id=attrs['feed_id']) assert feed.user_id == user_id, "no right on feed %r" % feed.id attrs['category_id'] = feed.category_id if attrs.get('category_id'): cat = CategoryController().get(id=attrs['category_id']) assert self.user_id is None or cat.user_id == user_id, \ "no right on cat %r" % cat.id return super().update(filters, attrs) def get_history(self, year=None, month=None): """ Sort articles by year and month. """ articles_counter = Counter() articles = self.read() if year is not None: articles = articles.filter( sqlalchemy.extract('year', Article.date) == year) if month is not None: articles = articles.filter( sqlalchemy.extract('month', Article.date) == month) for article in articles.all(): if year is not None: articles_counter[article.date.month] += 1 else: articles_counter[article.date.year] += 1 return articles_counter, articles def read_light(self, **filters): return super().read(**filters).with_entities(Article.id, Article.title, Article.readed, Article.like, Article.feed_id, Article.date, Article.category_id).order_by(Article.date.desc())