educoder/app/models/salesman_channel.rb

class SalesmanChannel < ApplicationRecord
  belongs_to :salesman, :touch => true, counter_cache: true
  belongs_to :school

  def school_name
    school.name
  end

  def teacher_count(start_time, end_time, keyword)
    UserExtension.joins(:school).where("schools.name like '%#{keyword}%' and user_extensions.identity=0
                                        and user_extensions.created_at between '#{start_time}' and '#{end_time}'").count
    # UserExtension.where(school_id: school_id).where(query).count
  end

  def student_count(start_time, end_time, keyword)
    UserExtension.joins(:school).where("schools.name like '%#{keyword}%' and user_extensions.identity=1
                                        and user_extensions.created_at between '#{start_time}' and '#{end_time}'").count
  end

  def course_count(start_time, end_time, keyword)
    Course.joins(:school).where("schools.name like '%#{keyword}%' and courses.created_at between '#{start_time}' and '#{end_time}'").count
  end

  def shixuns_count(start_time, end_time, keyword)
    ShixunMember.joins("join user_extensions on user_extensions.user_id = shixun_members.user_id and shixun_members.created_at between '#{start_time}' and '#{end_time}'")
        .where(user_extensions: {school_id: school_id}).pluck(:shixun_id).uniq.count
  end


end