需要帮助理解 discourse 搜索的工作原理

neounix · 2020 年12 月 16 日 02:23

I think @Ranjan is asking how Discourse implements search in the Discourse application and is not asking about Google search.

He seems interested to understand how Discourse implements their internal search algorithm, and a good place to start is here in class SearchController:

github.com

discourse/discourse/blob/94cd5ac0b1b654ba55028c3cdead1bfb40af2991/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
    if params[:q].present? && !@search_term.present?
      raise Discourse::InvalidParameters.new(:q)

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Hey @Ranjan … you would be amazed at how much information can be found in the Discourse open source code on GitHub!

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需要帮助理解 discourse 搜索的工作原理

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