Search filter - only topics / only posts

Canapin · March 13, 2023, 11:40pm

It’s an unknown, strange and terrifying world for me, but looking at the code, the controller would be here:

discourse/discourse/blob/2c8dfc3dbc401074e91d930dafe98f38c88a396f/app/controllers/search_controller.rb

# frozen_string_literal: true

class SearchController < ApplicationController
  before_action :cancel_overloaded_search, only: [:query]
  skip_before_action :check_xhr, only: :show
  after_action :add_noindex_header

  def self.valid_context_types
    %w[user topic category private_messages tag]
  end

  def show
    permitted_params = params.permit(:q, :page)
    @search_term = permitted_params[:q]

    # a q param has been given but it's not in the correct format
    # eg: ?q[foo]=bar
    raise Discourse::InvalidParameters.new(:q) if params[:q].present? && !@search_term.present?

    if @search_term.present? && @search_term.length < SiteSetting.min_search_term_length

This file has been truncated. show original

The search filters seem to be here:

github.com

discourse/discourse/blob/60ad836313b15eb8072bfadcbf657d5275754fde/lib/search.rb#L358


      
          end
          
          
def self.custom_topic_eager_load(tables = nil, &block)
            (@custom_topic_eager_loads ||= []) << (tables || block)
          end
          
          
def self.custom_topic_eager_loads
            Array.wrap(@custom_topic_eager_loads)
          end
          
          
advanced_filter(/\Ain:personal-direct\z/i) do |posts|
            if @guardian.user
              posts.joins("LEFT JOIN topic_allowed_groups tg ON posts.topic_id = tg.topic_id").where(
                <<~SQL,
                  tg.id IS NULL
                  AND posts.topic_id IN (
                    SELECT tau.topic_id
                    FROM topic_allowed_users tau
                    JOIN topic_allowed_users tau2
                    ON tau2.topic_id = tau.topic_id
                    AND tau2.id != tau.id

And you may be interested to see how Discours Assign adds a filter to the search:

github.com

discourse/discourse-assign/blob/99e5bb48c907e47ce798fcbe097f9c4a98b0c1ad/plugin.rb#L932


      
          end
          
          
register_search_advanced_filter(/in:assigned/) do |posts|
            posts.where(<<~SQL) if @guardian.can_assign?
                topics.id IN (
                  SELECT a.topic_id FROM assignments a WHERE a.active
                )
              SQL
          end
          
          
register_search_advanced_filter(/in:unassigned/) do |posts|
            posts.where(<<~SQL) if @guardian.can_assign?
                topics.id NOT IN (
                  SELECT a.topic_id FROM assignments a WHERE a.active
                )
              SQL
          end
          
          
register_search_advanced_filter(/assigned:(.+)$/) do |posts, match|
            if @guardian.can_assign?
              if user_id = User.find_by_username(match)&.id

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Search filter - only topics / only posts

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