zammad/app/controllers/mentions_controller.rb

# Copyright (C) 2012-2023 Zammad Foundation, https://zammad-foundation.org/

class MentionsController < ApplicationController
  prepend_before_action :authorize!
  prepend_before_action :authentication_check

  # GET /api/v1/mentions
  def index
    list = mentionable_object.mentions

    if response_full?
      item_ids = list.map(&:id)
      assets   = ApplicationModel::CanAssets.reduce list

      render json: {
        record_ids: item_ids,
        assets:     assets,
      }
      return
    end

    # return result
    render json: {
      mentions: list,
    }
  end

  # POST /api/v1/mentions
  def create
    Mention.subscribe! mentionable_object, current_user

    render json: true, status: :created
  end

  # DELETE /api/v1/mentions
  def destroy
    Mention.where(user: current_user, id: params[:id]).destroy_all

    render json: true, status: :ok
  end

  def mentionable_object
    @mentionable_object ||= begin
      case params[:mentionable_type]
      when 'Ticket'
        Ticket.find_by id: params[:mentionable_id]
      else
        raise Exceptions::UnprocessableEntity, __("The parameter 'mentionable_type' is invalid.")
      end
    end
  end
end