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e34fb7e0b2
Similar to 22a55ef0ce,
this commit adds a replies_count to the Chat::Thread
table, which is updated every 15 minutes via PeriodicalUpdates.
This is done so the new thread indicator for the UI can
show the count without intense serializer queries, but
in future we likely want this to update more frequently.
88 lines
2.9 KiB
Ruby
88 lines
2.9 KiB
Ruby
# frozen_string_literal: true
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module Chat
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class Thread < ActiveRecord::Base
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EXCERPT_LENGTH = 150
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self.table_name = "chat_threads"
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belongs_to :channel, foreign_key: "channel_id", class_name: "Chat::Channel"
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belongs_to :original_message_user, foreign_key: "original_message_user_id", class_name: "User"
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belongs_to :original_message, foreign_key: "original_message_id", class_name: "Chat::Message"
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has_many :chat_messages,
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-> { order("chat_messages.created_at ASC, chat_messages.id ASC") },
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foreign_key: :thread_id,
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primary_key: :id,
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class_name: "Chat::Message"
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enum :status, { open: 0, read_only: 1, closed: 2, archived: 3 }, scopes: false
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def replies
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self.chat_messages.where.not(id: self.original_message_id)
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end
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def url
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"#{channel.url}/t/#{self.id}"
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end
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def relative_url
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"#{channel.relative_url}/t/#{self.id}"
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end
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def excerpt
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original_message.excerpt(max_length: EXCERPT_LENGTH)
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end
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def self.ensure_consistency!
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update_counts
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end
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def self.update_counts
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# NOTE: Chat::Thread#replies_count is not updated every time
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# a message is created or deleted in a channel, the UI will lag
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# behind unless it is kept in sync with MessageBus. The count
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# has 1 subtracted from it to account for the original message.
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#
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# It is updated eventually via Jobs::Chat::PeriodicalUpdates. In
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# future we may want to update this more frequently.
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DB.exec <<~SQL
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UPDATE chat_threads threads
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SET replies_count = subquery.replies_count
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FROM (
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SELECT COUNT(*) - 1 AS replies_count, thread_id
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FROM chat_messages
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WHERE chat_messages.deleted_at IS NULL AND thread_id IS NOT NULL
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GROUP BY thread_id
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) subquery
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WHERE threads.id = subquery.thread_id
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AND subquery.replies_count != threads.replies_count
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SQL
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end
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end
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end
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# == Schema Information
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#
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# Table name: chat_threads
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#
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# id :bigint not null, primary key
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# channel_id :integer not null
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# original_message_id :integer not null
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# original_message_user_id :integer not null
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# status :integer default("open"), not null
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# title :string
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# created_at :datetime not null
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# updated_at :datetime not null
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# replies_count :integer default(0), not null
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#
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# Indexes
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#
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# index_chat_threads_on_channel_id (channel_id)
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# index_chat_threads_on_channel_id_and_status (channel_id,status)
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# index_chat_threads_on_original_message_id (original_message_id)
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# index_chat_threads_on_original_message_user_id (original_message_user_id)
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# index_chat_threads_on_replies_count (replies_count)
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# index_chat_threads_on_status (status)
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#
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