我正在构建一个带有登录模式的 React/Redux 应用程序,当用户导航到/user/signin
. 在页面组件加载之前,调度一个动作以设置isModalOpen
为 true。
模态组件connect
用于将模态状态映射到道具。但是,当页面加载时,模态组件似乎正在接收来自父页面组件的调度更新之前的模态状态。我尝试将isModalOpen
向下作为页面组件的道具传递,当我导航到路线时,它会正确显示模式。除非我通过 modal 组件调度一个动作以设置isModalOpen
为 false 并关闭 modal ,否则父组件上的 props 不会更新,因此 modal 保持关闭状态。
这是我正在使用的代码:
用户登录页面组件
class UserSignInPage extends React.Component {
componentWillMount() {
this.props.openModal()
}
componentWillUnMount() {
this.props.closeModal()
}
render() {
const { location, isModalOpen } = this.props
return (
<StackedMenuTemplate header={<Header />} menu={<Navigation />} footer={<Footer />}>
<Overview />
<SignInForm redirectTo={location.query.redirect} isModalOpen />
</StackedMenuTemplate>
)
}
}
UserSignIn.propTypes = {
isModalOpen: PropTypes.bool,
location: PropTypes.object,
openModal: PropTypes.func.isRequired,
closeModal: PropTypes.func.isRequired,
}
const mapStateToProps = (state) => ({
isModalOpen: isOpen(state, 'LOGIN'),
})
const mapDispatchToProps = (dispatch) => ({
openModal: () => {
dispatch(modalShow('LOGIN'))
},
closeModal: () => {
dispatch(modalHide('LOGIN'))
},
})
export default connect(
mapStateToProps,
mapDispatchToProps
)(UserSignIn)
用户登录模态容器
const handleSubmit = (values, dispatch) => {
})
const mapStateToProps = (state) => ({
isAuthenticated: state.auth.isSignedIn,
isModalOpen: isOpen(state, 'LOGIN'),
})
const mapDispatchToProps = (dispatch, ownProps) => ({
handleLogout: () => {
dispatch(logout())
},
handleRedirect: () => {
dispatch(push(ownProps.redirectTo || '/'))
},
handleModalClose: () => {
dispatch(modalHide('LOGIN'))
},
})
export default connect(
mapStateToProps,
mapDispatchToProps
)(
reduxForm({
form: 'UserSignIn',
onSubmit: handleSubmit,
})(Form)
)
用户登录表单组件
class UserSignInForm extends Component {
componentWillMount() {
this.props.handleLogout()
}
componentWillReceiveProps(nextProps) {
if (!this.props.isAuthenticated && nextProps.isAuthenticated) { // true after successful submit
this.props.handleRedirect()
}
}
shouldComponentUpdate(nextProps) {
if (this.props.isModalOpen === nextProps.isModalOpen) {
return false
}
}
render() {
const { handleSubmit, isModalOpen, handleModalClose } = this.props
return (
<Modal open={isModalOpen} onClose={handleModalClose} closeIcon='close'>
<Modal.Header content='Sign In' />
<Form onSubmit={handleSubmit}>
<Modal.Content>
<Form.Field>
<label>Email</label>
<Field name='email' component={Input} type='email' />
</Form.Field>
<Form.Field>
<label>Password</label>
<Field name='password' component={Input} type='password' />
</Form.Field>
</Modal.Content>
<Modal.Actions>
<Button type='submit'>
Sign In
</Button>
</Modal.Actions>
<div>
<Link to='/user/forgot-password' >
Forgot Password?
</Link>
</div>
</Form>
</Modal>
)
}
}
UserSignInForm.propTypes = {
isModalOpen: PropTypes.bool,
handleModalClose: PropTypes.func.isRequired,
isAuthenticated: PropTypes.bool.isRequired,
handleLogout: PropTypes.func.isRequired,
handleRedirect: PropTypes.func.isRequired,
handleSubmit: PropTypes.func.isRequired,
}
export default UserSignInForm