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8feeaa5d69
### Super high level description: Adds a nested/threaded view for Discourse topics, allowing posts to be displayed as an indented reply tree instead of the default flat chronological stream. Backend: - New /n/:slug/:topic_id routes serving roots, children (paginated), and context (ancestor chain) endpoints - TreeLoader recursively fetches reply trees with configurable max depth, Sort supports top/new/old ordering - NestedViewPostStat caches per-post reply counts (direct + total descendants, whisper-aware) with a backfill job for existing data - NestedTopic model tracks per-topic opt-in and pinned post Frontend: - Recursive <NestedPost> / <NestedPostChildren> components with lazy-load expansion, cloaking, and scroll tracking - NestedViewCache service preserves expansion state and scroll position across back/forward navigation (15 entries, 10min TTL) - Context view for deep-linking to a specific post with its ancestor chain - Floating actions bar, sort selector, real-time MessageBus updates Site settings (hidden): nested_replies_enabled, nested_replies_default, nested_replies_default_sort, nested_replies_max_depth, nested_replies_cap_nesting_depth, nested_replies_toggle_mode_groups, plus a per-category default override. Co-authored-by: Rafael Silva <xfalcox@gmail.com> Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Co-authored-by: Sérgio Saquetim <saquetim@discourse.org>
39 lines
936 B
Ruby
39 lines
936 B
Ruby
# frozen_string_literal: true
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class NestedTopic < ActiveRecord::Base
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self.ignored_columns = ["pinned_post_number"]
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MAX_PINNED_POSTS = 10
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belongs_to :topic, -> { with_deleted }
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validates :topic_id, presence: true, uniqueness: true
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def pin_limit_reached?
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pinned_post_ids.length >= MAX_PINNED_POSTS
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end
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def toggle_pin(post_id)
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if pinned_post_ids.include?(post_id)
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self.pinned_post_ids = pinned_post_ids - [post_id]
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else
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self.pinned_post_ids = pinned_post_ids + [post_id]
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end
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save!
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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: nested_topics
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#
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# id :bigint not null, primary key
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# pinned_post_ids :bigint default([]), not null, is an Array
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# created_at :datetime not null
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# updated_at :datetime not null
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# topic_id :bigint not null
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#
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# Indexes
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#
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# index_nested_topics_on_topic_id (topic_id) UNIQUE
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#
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