mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 21:57:36 +08:00
75 lines
2.4 KiB
Ruby
75 lines
2.4 KiB
Ruby
class Category < ActiveRecord::Base
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belongs_to :topic, dependent: :destroy
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belongs_to :topic_only_relative_url,
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select: "id, title",
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class_name: "Topic",
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foreign_key: "topic_id"
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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 :user_id
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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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scope :popular, lambda { order('topic_count desc') }
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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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# Recalculates `topics_year`, `topics_month`, and `topics_week`
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# for each Category.
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def self.update_stats
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topics = Topic
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.select("COUNT(*)")
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.where("topics.category_id = categories.id")
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.where("categories.topic_id <> topics.id")
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.visible
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topics_year = topics.created_since(1.year.ago).to_sql
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topics_month = topics.created_since(1.month.ago).to_sql
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topics_week = topics.created_since(1.week.ago).to_sql
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Category.update_all("topics_year = (#{topics_year}),
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topics_month = (#{topics_month}),
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topics_week = (#{topics_week})")
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end
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def topic_url
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topic_only_relative_url.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, pinned_at: Time.now)
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post_contents = I18n.t("category.post_template", replace_paragraph: I18n.t("category.replace_paragraph"))
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topic.posts.create!(raw: post_contents, 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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def self.post_template
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I18n.t("category.post_template", replace_paragraph: I18n.t("category.replace_paragraph"))
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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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end
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