Question

我已经定义了PatientSchema，并在该Schema上定义了findByCredentials静态方法，如下所示：

const Patient = mongoose.model('Patient', PatientSchema )
PatientSchema.statics.findByCredentials = async function(patientId,password) {

    const patient = await Patient.findOne({patientId})

    if(!patient) {
        throw new Error ('No Such Patient Exists')
    }

    if(password !== patient.password) {
        throw new Error ('Incorrect Password !')
    } else {
        return patient
    }

}


module.exports = {Patient}

现在，当我尝试从登录控制器访问它时，出现错误消息：Patient.findByCredentials不是一个函数。这是我的控制器代码：

const {Patient} = require('../../models/Patient.model')


router.post('/', async (req,res)=>{

    if(req.body.userType === 'Patient') {
        const patient = await Patient.findByCredentials(req.body.id, req.body.password)
        const token = await patient.generateAuthToken()
        res.send({patient, token})
    } 
}) 

module.exports = router

我从模型而不是实例中调用方法，仍然出现此错误：（

Answer 1

您应该在分配静态方法后声明模型：

PatientSchema.statics.findByCredentials = async function(patientId,password) {

    const patient = await Patient.findOne({patientId})

    if(!patient) {
        throw new Error ('No Such Patient Exists')
    }

    if(password !== patient.password) {
        throw new Error ('Incorrect Password !')
    } else {
        return patient
    }

}

const Patient = mongoose.model('Patient', PatientSchema )
module.exports = {Patient}

无法调用猫鼬静态方法：错误findByCredential不是函数

1 个答案: