错误：在 Vue 中使用 Rails API 时，数据已接收，但 Vue 无法读取

Question

我有一个连接到VueJS前端的rails api。我正在登录。当我输入凭据并单击登录时，会调用登录方法，在"网络"选项卡中，我看到响应，但Vue抛出错误：

login error: TypeError: Cannot read property 'auth_token' of undefined

这是网络选项卡中返回的数据：

{user: {id: 1, email: "[e-mail]",…},…}
auth_token: "eyJhbGciOiJIUzI1NiJ9.eyJleHAiOjE2MDYwNDU3ODgsImlzcyI6Imlzc3Vlcl9uYW1lIiwiYXVkIjoiY2xpZW50IiwidXNlcl9pZCI6MX0.ZLlKtsdyqS-qFwJljvDsQeBxOJyU756q38-cX6MN_2Q"
user: {id: 1, email: "[e-mail]",…}
created_at: "2020-11-10T22:37:01.775Z"
email: "[e-mail]"
id: 1
password_digest: "$2a$12$bVmG1cvMidLice0Qcn8sBu36/F1HxhY0NeHT5gRKcAoV8u5Lk5wx6"
updated_at: "2020-11-10T22:37:01.775Z"

这是我的签名方法：

async signin () {
try {
console.log('base rute is: ', process.env.VUE_APP_ROOT_API)
const response = await Api.post('users/login', {
user: {
email: this.email_input,
password: this.password
}
})
const loggedUser = response.data
console.log('this is login response data: ', loggedUser)
this.$store.commit('set_token', this.loggedUser.auth_token) [THIS IS WHERE THE ERROR IS THROWN]
this.$store.commit('set_user', this.loggedUser.user)
localStorage.setItem('token', this.loggedUser.auth_token)
localStorage.setItem('user', JSON.stringify(this.loggedUser.user))
this.$emit('authenticated', true)
} catch (err) {
console.log('login error: ', err)
}
}

}

我真的不确定问题出在哪里。

Answer 1

如果this.loggedUser在数据中，您会调用它。但是你已经把它设置为常量。

async signin () {
try {
console.log('base rute is: ', process.env.VUE_APP_ROOT_API)
const response = await Api.post('users/login', {
user: {
email: this.email_input,
password: this.password
}
})
const loggedUser = response.data
console.log('this is login response data: ', loggedUser)
this.$store.commit('set_token', loggedUser.auth_token) 
this.$store.commit('set_user', loggedUser.user)
localStorage.setItem('token', loggedUser.auth_token)
localStorage.setItem('user', JSON.stringify(loggedUser.user))
this.$emit('authenticated', true)
} catch (err) {
console.log('login error: ', err)
}
}