0
我想搜索在物體模型的ID,該機型擁有教師ID的數組如下節點JS蒙戈搜索
var Classroom = require('./classroom');
var Teacher = require('./teacher');
var ClassSectionSchema = new Schema({
title : String,
teacher_id : [{type: Schema.Types.ObjectId, ref: 'Teacher'}]
});
我想刪除它之前尋找每一位教師,但如果老師連接在一類部分我不想刪除它,我想如果類部分有一個老師ID以下
router.post('/delete',function(req,res){
var teacher_id= req.body.selected;
Class_section.findOne({teacher_id:teacher_id},function(err,subject){
if(err){
console.log(err);
res.json({status:"error", message :"error occurred"});
return;
}else if(subject){
res.json({status:"error", message:"teacher has class"});
return;
}else{
Teacher.remove({_id:teacher_id},function(err){
if(err){
console.log(err);
res.json({status:"error", message :"error occurred"});
return;
}else{
res.json({status:"success",message: "teacher deleted"});
return;
}
})
}
})
})
以前的代碼才能正常運行,但如果它有兩個老師老師的數組中ID的老師被刪除