socialforge/app/models/syllabus.rb

# encoding: utf-8
class Syllabus < ActiveRecord::Base
  include Redmine::SafeAttributes
  include ApplicationHelper
  #elasticsearch
  include Elasticsearch::Model
  #elasticsearch kaminari init
  Kaminari::Hooks.init
  Elasticsearch::Model::Response::Response.__send__ :include, Elasticsearch::Model::Response::Pagination::Kaminari
  settings index: { number_of_shards: 5 } do
    mappings dynamic: 'false' do
      indexes :title, analyzer: 'smartcn',index_options: 'offsets'
      indexes :description, analyzer: 'smartcn',index_options: 'offsets'
      indexes :updated_at, index:"not_analyzed", type:'date'
    end
  end
  acts_as_taggable
  acts_as_attachable
  has_many_kindeditor_assets :assets, :dependent => :destroy

  belongs_to :user
  has_many :courses
  has_many :journals_for_messages, :as => :jour, :dependent => :destroy
  has_many :syllabus_members, :dependent => :destroy
  has_many :praise_tread, as: :praise_tread_object, dependent: :destroy
  has_one :praise_tread_cache, as: :object, dependent: :destroy
  attr_accessible :description, :user_id, :title, :eng_name, :syllabus_type, :credit, :hours, :theory_hours, :practice_hours, :applicable_major, :pre_course
  safe_attributes 'title','user', 'description', 'eng_name', 'syllabus_type', 'credit', 'hours', 'theory_hours', 'practice_hours', 'credit', 'applicable_major', 'pre_course'

  validates :title, :user_id, presence: true

  after_update :update_syllabus_ealasticsearch_index
  after_create :create_syllabus_ealasticsearch_index
  before_destroy :delete_syllabus_ealasticsearch_index

  scope :indexable,lambda { where(nil) }#用于elastic建索引的scope

  scope :like, lambda {|arg|
    if arg.blank?
      where(nil)
    else
      pattern = "%#{arg.to_s.strip.downcase}%"
      where(" LOWER(title) LIKE :p ", :p => pattern)
    end
  }

  def delete_kindeditor_assets
    delete_kindeditor_assets_from_disk self.id,OwnerTypeHelper::SYLLABUS
  end

  def syllabus_type_str
    case self.syllabus_type
      when 1
        type = "公共必修课"
      when 2
        type = "学科必修课"
      when 3
        type = "专业选修课"
      when 4
        type = "实践必修课"
      when 5
        type = "实践选修课"
    end
    type
  end

  ###添加回复
  def self.add_syllabus_jour(user, notes, id, root_id, options = {})
    syllabus = Syllabus.find(id)
    if options.count == 0
      jfm = syllabus.journals_for_messages.build(:user_id => user.id, :notes => notes, :reply_id => 0, :root_id => root_id)
    else
      jfm = syllabus.journals_for_messages.build(options)
    end
    jfm.save
    jfm
  end

  def create_syllabus_ealasticsearch_index
    return if Rails.env.development?
    self.__elasticsearch__.index_document
  end

  def update_syllabus_ealasticsearch_index
    return if Rails.env.development?
    begin
      self.__elasticsearch__.update_document
    rescue => e
      self.__elasticsearch__.index_document
    end
  end

  def delete_syllabus_ealasticsearch_index
    return if Rails.env.development?
    begin
      self.__elasticsearch__.delete_document
    rescue => e

    end
  end

  def self.search(query)
    __elasticsearch__.search(
        {
            query: {
                multi_match: {
                    query: query,
                    type:"most_fields",
                    operator: "or",
                    fields: ['title']
                }
            },
            sort: {
                _score:{order: "desc" },
                updated_at:{order:"desc"}

            },
            highlight: {
                pre_tags: ['<span class="c_red">'],
                post_tags: ['</span>'],
                fields: {
                    title: {},
                    description: {}
                }
            }
        }
    )
  end
end