courses=Course.visible.joins(:course_status).where("#{Course.table_name}.created_at like '%#{time_now}%' and #{Course.table_name}.school_id <>
courses=Course.includes(:school).visible.joins(:course_status).where("#{Course.table_name}.created_at like '%#{time_now}%' and #{Course.table_name}.school_id <>
courses=Course.visible.joins(:course_status).where("#{Course.table_name}.created_at like '%#{time_now}%' and #{Course.table_name}.school_id is not NULL
courses=Course.includes(:school).visible.joins(:course_status).where("#{Course.table_name}.created_at like '%#{time_now}%' and #{Course.table_name}.school_id is not NULL