mirror of
https://gh.wpcy.net/https://github.com/discourse/discourse.git
synced 2026-05-25 03:18:54 +08:00
7ecb945ec4
## Overview
This PR introduces comprehensive search functionality for chat messages,
enabling users to search through their chat history both globally across
all accessible channels and within specific channels.
### Search Capabilities
**All-Channel Search**: When no channel is specified, users can search
across all channels they have access to. The search respects channel
permissions through `ChannelFetcher.all_secured_channel_ids`, ensuring
users only see results from channels they can view.
**Per-Channel Search**: Users can scope their search to a specific
channel by providing a `channel_id` parameter, useful for finding
messages within a particular conversation context.
**Search Features**:
- Full-text search using PostgreSQL's tsvector/tsquery
- Advanced filters: `@username` to filter by author, `#channel` to
filter by channel slug
- Sort options: relevance (default) or latest
- Pagination support
- Search data weighted by relevance
## Site Setting: `chat_search_enabled`
This feature is gated behind the `chat_search_enabled` site setting,
which is currently:
- **Default**: `false`
- **Hidden**: `true`
- **Client-accessible**: `true`
### Deployment Strategy
Due to the need for chat messages to be indexed before search becomes
useful, we're implementing a two-phase deployment:
**Phase 1 (Initial Merge)**:
- `chat_search_enabled` remains `false` and hidden
- The `register_search_index` uses default (true) instead of `chat_search_enabled` value
- This allows the reindexing infrastructure to begin indexing existing
chat messages even if we don't show the UI yet
**Wait Period**:
- Wait at least one week after Phase 1 deployment
- `Jobs::ReindexSearch` runs every 2 hours and will progressively index
all chat messages
- This ensures most sites have a significant part of their chat history indexed
**Phase 2 (Follow-up Merge)**:
- Set `chat_search_enabled` default to `true` and unhide it
- Update the `register_search_index` enabled proc uses the default
(true) instead of using the `chat_search_enabled` setting
- Users can now access search with pre-indexed data
**Rationale**: Without this phased approach, users would see the search
UI immediately but receive no results until the reindexing job runs,
creating a confusing experience. By pre-indexing while the UI is hidden,
we ensure search works immediately when enabled.
## New Plugin API: `register_search_index`
This PR introduces a new plugin API that allows plugins to register
custom search indexes that integrate seamlessly with Discourse's search
infrastructure.
### API Signature
```ruby
register_search_index(
model_class:, # The ActiveRecord model to index
search_data_class:, # The model for storing search data
index_version:, # Version number for re-indexing
search_data:, # Proc that returns weighted search data
load_unindexed_record_ids:,# Proc that finds records needing indexing
enabled: # Optional proc to enable/disable (default: -> { true })
)
```
### How It Works
**Integration with SearchIndexer**: When `SearchIndexer.index(obj)` is
called, it checks registered search handlers for the object's type. If a
handler matches, it:
1. Calls the `search_data` proc with the object and an `IndexerHelper`
instance
2. Receives weighted search data (`:a_weight`, `:b_weight`, `:c_weight`,
`:d_weight`)
3. Updates the corresponding search data table with PostgreSQL's
tsvector
**Integration with Jobs::ReindexSearch**: The scheduled job (runs every
2 hours) calls `rebuild_registered_search_handlers`, which:
1. Iterates through all registered search handlers
2. Skips handlers where `enabled` proc returns `false`
3. Calls `load_unindexed_record_ids` to find records needing indexing
4. Indexes up to `limit` records per handler (default: 10,000)
### Chat Implementation Example
```ruby
register_search_index(
model_class: Chat::Message,
search_data_class: Chat::MessageSearchData,
index_version: 1,
search_data: proc { |message, indexer_helper|
{
a_weight: message.message,
d_weight: indexer_helper.scrub_html(message.cooked)[0..600_000]
}
},
load_unindexed_record_ids: proc { |limit:, index_version:|
Chat::Message
.joins("LEFT JOIN chat_message_search_data ON chat_message_id = chat_messages.id")
.where(
"chat_message_search_data.locale IS NULL OR
chat_message_search_data.locale != ? OR
chat_message_search_data.version != ?",
SiteSetting.default_locale,
index_version
)
.order("chat_messages.id ASC")
.limit(limit)
.pluck(:id)
}
)
```
Co-authored-by: Martin Brennan <mjrbrennan@gmail.com>
Co-authored-by: Loïc Guitaut <5648+Flink@users.noreply.github.com>
|
||
|---|---|---|
| .. | ||
| base-common.scss | ||
| chat-audio-upload.scss | ||
| chat-browse.scss | ||
| chat-channel-card.scss | ||
| chat-channel-filter-bar.scss | ||
| chat-channel-icon.scss | ||
| chat-channel-info.scss | ||
| chat-channel-members.scss | ||
| chat-channel-name.scss | ||
| chat-channel-preview-card.scss | ||
| chat-channel-row.scss | ||
| chat-channel-settings.scss | ||
| chat-channel-title.scss | ||
| chat-channel.scss | ||
| chat-composer-button.scss | ||
| chat-composer-dropdown.scss | ||
| chat-composer-separator.scss | ||
| chat-composer-upload.scss | ||
| chat-composer-uploads.scss | ||
| chat-composer.scss | ||
| chat-drawer-routes.scss | ||
| chat-drawer.scss | ||
| chat-footer.scss | ||
| chat-form.scss | ||
| chat-height-mixin.scss | ||
| chat-index.scss | ||
| chat-mention-warnings.scss | ||
| chat-message-actions.scss | ||
| chat-message-blocks.scss | ||
| chat-message-collapser.scss | ||
| chat-message-creator.scss | ||
| chat-message-error.scss | ||
| chat-message-images.scss | ||
| chat-message-info.scss | ||
| chat-message-left-gutter.scss | ||
| chat-message-search-entry.scss | ||
| chat-message-separator.scss | ||
| chat-message-text.scss | ||
| chat-message-thread-indicator.scss | ||
| chat-message.scss | ||
| chat-messages-scroller.scss | ||
| chat-modal-archive-channel.scss | ||
| chat-modal-channel-summary.scss | ||
| chat-modal-create-channel.scss | ||
| chat-modal-edit-channel-description.scss | ||
| chat-modal-move-message-to-channel.scss | ||
| chat-modal-new-message.scss | ||
| chat-navbar.scss | ||
| chat-notices.scss | ||
| chat-onebox.scss | ||
| chat-reply.scss | ||
| chat-replying-indicator.scss | ||
| chat-scroll-to-bottom.scss | ||
| chat-search.scss | ||
| chat-section.scss | ||
| chat-selection-manager.scss | ||
| chat-side-panel-resizer.scss | ||
| chat-skeleton.scss | ||
| chat-thread-header.scss | ||
| chat-thread-heading.scss | ||
| chat-thread-list-header.scss | ||
| chat-thread-list-item.scss | ||
| chat-thread-participants.scss | ||
| chat-thread-title.scss | ||
| chat-thread-unread-indicator.scss | ||
| chat-thread.scss | ||
| chat-threads-list.scss | ||
| chat-transcript.scss | ||
| chat-unread-indicator.scss | ||
| chat-upload-drop-zone.scss | ||
| chat-user-avatar.scss | ||
| chat-user-threads.scss | ||
| core-extensions.scss | ||
| direct-message-creator.scss | ||
| incoming-chat-webhooks.scss | ||
| index.scss | ||
| reviewable-chat-message.scss | ||
