mirror of
https://github.com/discourse/discourse.git
synced 2024-11-30 20:25:26 +08:00
87 lines
2.7 KiB
Ruby
87 lines
2.7 KiB
Ruby
class Category < ActiveRecord::Base
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belongs_to :topic
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belongs_to :user
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has_many :topics
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has_many :category_featured_topics
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has_many :featured_topics, through: :category_featured_topics, source: :topic
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has_many :category_featured_users
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has_many :featured_users, through: :category_featured_users, source: :user
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validates_presence_of :name
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validates_uniqueness_of :name
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validate :uncategorized_validator
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after_save :invalidate_site_cache
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after_destroy :invalidate_site_cache
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def uncategorized_validator
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return errors.add(:name, I18n.t(:is_reserved)) if name == SiteSetting.uncategorized_name
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return errors.add(:slug, I18n.t(:is_reserved)) if slug == SiteSetting.uncategorized_name
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end
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def self.popular
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order('topic_count desc')
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end
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def self.update_stats
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exec_sql "UPDATE categories
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SET topics_week = (SELECT COUNT(*)
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FROM topics as ft
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WHERE ft.category_id = categories.id
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AND ft.created_at > (CURRENT_TIMESTAMP - INTERVAL '1 WEEK')
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AND ft.visible),
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topics_month = (SELECT COUNT(*)
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FROM topics as ft
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WHERE ft.category_id = categories.id
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AND ft.created_at > (CURRENT_TIMESTAMP - INTERVAL '1 MONTH')
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AND ft.visible),
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topics_year = (SELECT COUNT(*)
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FROM topics as ft
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WHERE ft.category_id = categories.id
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AND ft.created_at > (CURRENT_TIMESTAMP - INTERVAL '1 YEAR')
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AND ft.visible)"
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end
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# Use the first paragraph of the topic's first post as the excerpt
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def excerpt
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if topic.present?
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first_post = topic.posts.order(:post_number).first
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body = first_post.cooked
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matches = body.scan(/\<p\>(.*)\<\/p\>/)
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if matches and matches[0] and matches[0][0]
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return matches[0][0]
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end
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end
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nil
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end
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def topic_url
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topic.try(:relative_url)
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end
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before_save do
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self.slug = Slug.for(self.name)
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end
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after_create do
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topic = Topic.create!(title: I18n.t("category.topic_prefix", category: name), user: user, visible: false)
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topic.posts.create!(raw: SiteSetting.category_post_template, user: user)
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update_column(:topic_id, topic.id)
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topic.update_column(:category_id, self.id)
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end
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# We cache the categories in the site json, so we need to invalidate it when they change
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def invalidate_site_cache
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Site.invalidate_cache
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end
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before_destroy do
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topic.destroy
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end
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end
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