修改 discharge_tasks facilitator 默认值

database/migrations/2021_03_30_104348_change_discharge_auth_name.php

@@ -39,6 +39,7 @@ class ChangeDischargeAuthName extends Migration
 
         Schema::table('discharge_tasks',function (Blueprint $table){
             $table->integer('warehouse_id')->comment('仓库');
+            $table->bigInteger('facilitator_id')->comment('装卸队')->default(null)->change();
         });
 
     }