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88 lines
3.4 KiB
88 lines
3.4 KiB
class Message < ApplicationRecord
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attr_accessor :total_replies_count
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belongs_to :board, counter_cache: true
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belongs_to :author, class_name: "User", foreign_key: 'author_id'
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belongs_to :parent, class_name: "Message", foreign_key: "parent_id", counter_cache: :replies_count, optional: true
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has_one :message_detail, dependent: :destroy
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accepts_nested_attributes_for :message_detail, update_only: true
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has_many :children, -> { order(updated_on: :desc ) }, class_name: "Message", foreign_key: "parent_id", dependent: :destroy
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has_many :praise_treads, as: :praise_tread_object, dependent: :destroy
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has_many :tidings, as: :container, dependent: :destroy
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has_many :attachments, as: :container, dependent: :destroy
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has_many :course_acts, :class_name => 'CourseActivity',:as =>:course_act ,:dependent => :destroy # 课程动态
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scope :root_nodes, -> { where("parent_id IS NULL") } #判断该信息是帖子还是回复。null为发布的帖子
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scope :reply_nodes, -> { where("parent_id IS NOT NULL") }
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scope :visible, -> { where(is_hidden: false)}
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scope :by_user, ->(user) { visible if user.nil? || !user.admin? }
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scope :preload_messages, -> { includes(:author, :message_detail) }
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scope :short, -> { select(:id, :subject, :created_on, :replies_count, :visits, :sticky, :praises_count) }
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scope :ordered, -> (opts={}) { reorder("created_on #{opts[:sort] == 1 ? 'asc': 'desc'}") }
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scope :by_ids, lambda { |ids| where(id: ids) unless ids.blank? }
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scope :find_by_boards, ->(ids) {where(board_id: ids)}
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scope :by_keywords, lambda { |keywords|
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where("subject LIKE ?", "%#{keywords.split(" ").join('|')}%") unless keywords.blank?
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}
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#转发表
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# has_many :forwards, as: :from, dependent: :destroy
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validates :subject, length: { maximum: 255 }
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def update_content(content)
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message_detail.update_attributes(content: content)
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end
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def copy_attachments_to_new_message(new_message, user)
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attachments.each do |attach|
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new_message.attachments << Attachment.new(attach.attributes.except("id").merge(
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quotes: 0,
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downloads: 0,
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author_id: user.id,
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created_on: Time.now
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))
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end
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end
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def self.bulk_move_to_other_board(message_ids, to_board_id, author_id)
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message_ids.each do |id|
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message = Message.find id
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message.update_attributes(board_id: to_board_id, author_id: author_id) if message.parent_id.nil? # TODO 暂时只支持跟节点移动
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end
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end
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# 包含二级回复的总点赞数
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def total_praises_count
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praises_count + children.includes(:children).reduce(0) { |count, filed|
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sub_sum_count = filed.children.reduce(0) { |sub_count, sub_filed| sub_count += sub_filed.praises_count }
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count += filed.praises_count
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sub_sum_count += count
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}
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end
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# 包含二级回复数的总回复数
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def total_replies_count
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replies_count + children.includes(:children).reduce(0) { |count, child|
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sub_sum_count = child.children.reduce(0) { |sub_count, sub_child| sub_count += sub_child.replies_count }
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count += child.replies_count
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sub_sum_count += count
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}
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end
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def has_replies
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children.present?
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end
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#
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def by_user_with_visible(user)
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user.nil? || !user.admin? ? children.visible.limit(5) : children.limit(5)
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end
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def update_visits
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update_attributes(:visits => visits + 1)
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end
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end
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