我是编码新手，我仍然对 if else 条件有问题，我有 2 个身份验证和一个后端，一个用于 React Native，一个用于 React， 在登录中我想添加 is_store ，我想告诉系统如果用户名和密码正确且 is_sore = true ，则让他登录，如果密码正确且用户名正确但 is_store = false 不要让他登录
我正在尝试将 is_store 传递给登录组件 我尝试了 if 条件，但它给了我错误的警报
注册组件
class RegistationForm extends Component {
state = {
username: "",
phone_number: "",
password: "",
email: "",
is_store: true <--- i want to pass it to Login
};
componentWillUnmount() {
this.props.errors.length && this.props.resetError();
}
changeHandler = e => {
this.setState({ [e.target.name]: e.target.value });
};
submitHandler = async e => {
e.preventDefault();
this.props.signup(this.state, this.props.history);
};
render() {
return (
<div className="container">
<div
style={{ marginTop: "125px" }}
className="card o-hidden border-0 shadow-lg col-12"
>
<div className="card-body p-0">
<div className="row">
<div className="col-lg-5 d-none d-lg-block bg-register-image col-12" />
<div className="col-lg-7 col-12">
<div className="p-5">
<div className="text-center col-12">
<h1 className="h4 text-gray-900 mb-4 col-12">
إنشاء حساب جديد
</h1>
</div>
<div className="text-center col-12">
{!!this.props.errors.length && (
<div className="text-left alert alert-danger">
{this.props.errors.map(error => (
<li key={error}>{error}</li>
))}
</div>
)}
</div>
<form onSubmit={this.submitHandler}>
<div className="form-group row">
<div className="col-sm-6 mb-3 mb-sm-0">
<Input
name="username"
value={this.state.username}
onChange={this.changeHandler}
className="form-control form-control-user"
placeholder=" السجل التجاري"
required
/>
</div>
<div className="col-sm-6 mb-3 mb-sm-0">
<Input
name="phone_number"
value={this.state.phone_number}
type="tel"
onChange={this.changeHandler}
className="form-control form-control-user"
placeholder="Mobile Ex: 966555555555"
required
pattern="[0-9]{12}"
/>
</div>
<br />
<br />
<div className="col-sm-6 mb-3 mb-sm-0">
<Input
name="password"
value={this.state.password}
onChange={this.changeHandler}
type="password"
className="form-control form-control-user"
placeholder="الرقم السري"
required
/>
</div>
<div className="col-sm-6 mb-3 mb-sm-0 ">
<Input
name="email"
value={this.state.email}
onChange={this.changeHandler}
type="email"
className="form-control form-control-user"
placeholder="الإيميل"
required
/>
</div>
<div className="col-12">
<button
style={{ padding: 9, marginTop: 20 }}
type="submit"
className="btn btn-success col-12 "
>
إنشئ حساب
</button>
</div>
</div>
</form>
<div className="text-center">
<Link to="/login" className="small">
املك حساب من قبل: تسجيل الدخول
</Link>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
);
}
}
登录组件
class Login extends Component {
state = {
username: "",
password: "",
is_store: false <-- is here the right place?
};
componentWillUnmount() {
this.props.errors.length && this.props.resetError();
}
changeHandler = e => {
this.setState({ [e.target.name]: e.target.value });
};
submitHandler = async e => {
e.preventDefault();
## here is what i'm trying to do with is_store
if (this.state.is_store === true) {
this.props.login(this.state, this.props.history);
} else {
alert("Wrong");
}
};
render() {
return (
<div className="container">
<div className="row justify-content-center" style={{ marginTop: 125 }}>
<div className="col-xl-10 col-lg-12 col-md-9">
<div className="card o-hidden border-0 shadow-lg my-5">
<div className="card-body p-0">
<div className="row">
<div className="col-lg-6 d-none d-lg-block bg-login-image" />
<div className="col-lg-6">
<div className="p-5">
<div className="text-left">
<h1 className="h4 text-gray-900 mb-4">تسجيل الدخول</h1>
{!!this.props.errors.length && (
<div className="alert alert-danger" role="alert">
{this.props.errors.map(error => (
<li key={error}>{error}</li>
))}
</div>
)}
</div>
<form onSubmit={this.submitHandler}>
<div
className="form-group col-12"
style={{ padding: 0 }}
>
<Input
name="username"
className="form-control form-control-user"
onChange={this.changeHandler}
value={this.state.username}
placeholder="رقم السجل التجاري"
/>
</div>
<div
className="form-group col-12"
style={{ padding: 0 }}
>
<Input
type="password"
className="form-control form-control-user"
name="password"
value={this.state.passsword}
onChange={this.changeHandler}
placeholder="الرقم السري"
/>
</div>
<button
style={{ padding: 9 }}
type="submit"
className="btn btn-primary col-12"
>
دخول
</button>
<hr />
</form>
<hr />
<div className="text-center">
<NavLink to={`/signup`}>إنشاء حساب جديد</NavLink>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
);
}
}
这是身份验证操作
export const login = (userData, history) => {
return async dispatch => {
try {
let response = await instance.post("user/login/", userData);
let user = response.data;
setAuthToken(user.token);
let decodedUser = jwt_decode(user.token);
dispatch(setCurrentUser(decodedUser));
history.push("/home");
} catch (error) {
console.log("error", error);
dispatch(setErrors(error.response.data));
}
};
};
谢谢
最佳答案
一般来说，您只能将状态传递给子组件。您无法将状态从子组件传递到其父组件。
为了将状态传递给父组件，您需要存储该值。你可以使用 Redux 来做到这一点。它存储值，您可以在任何组件中获取该值。
关于javascript - 状态使用身份验证，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57482708/