Next-Auth & React.Component

Question

Next有下面的示例，它对函数非常有用，但是我有一个类，需要在其中运行const { data: session } = useSession()。我想知道如何将其转换为在类中有效？

export default function AdminDashboard() {
  const { data: session } = useSession()
  // session is always non-null inside this page, all the way down the React tree.
  return "Some super secret dashboard"
}

AdminDashboard.auth = true

我试图将session: useSession()添加到下面的构造函数中，但是它没有工作。

我的班

export default class AdminDashboard extends React.Component {
 constructor(props) {
        super(props);
        this.state = {
          value: null,
          areas:[],
          areasid:[],
          users: [],
          isLoading: true,
          isAreaLoading: true,
          session: useSession() // THIS DID NOT WORK
        };
        this.checkAnswer = this.checkAnswer.bind(this);
        
      }
}
AdminDashboard.auth = true

根据下面的答案。我把剧本改成这样

const withSession = (Component) => (props) => {
  const session = useSession()

  // if the component has a render property, we are good
  if (Component.prototype.render) {
    return <Component session={session} {...props} />
  }

  // if the passed component is a function component, there is no need for this wrapper
  throw new Error(
    [
      "You passed a function component, `withSession` is not needed.",
      "You can `useSession` directly in your component.",
    ].join("\n")
  )
}



export default class NewCampaign extends React.Component {
render(){
        const { data: session, status } = this.props.session;
        const { isLoading, users, areas, areasid, isAreaLoading } = this.state;
        return (
            <React.Fragment></React.Fragment>
         )}
}

const ClassComponentWithSession = withSession(NewCampaign)

NewCampaign.auth = false;

NewCampaign.getLayout = function getLayout(page) {
  return (
    <Dashboard>
      {page}
    </Dashboard>
  )
}

但是，由于“this.props.session”的属性“数据”是未定义的，因此无法对其进行重构。

Answer 1

您应该使用getSession，只需使用等待的结果。

async function myFunction() {
  const session = await getSession()
  // session available here
}

您可以在客户端和服务器上使用它。

Answer 2

如果您想在类组件中使用useSession()钩子，您可以在高级组件的帮助下这样做，或者使用渲染工具。

高阶分量

import { useSession } from "next-auth/react"

const withSession = (Component) => (props) => {
  const session = useSession()

  // if the component has a render property, we are good
  if (Component.prototype.render) {
    return <Component session={session} {...props} />
  }

  // if the passed component is a function component, there is no need for this wrapper
  throw new Error(
    [
      "You passed a function component, `withSession` is not needed.",
      "You can `useSession` directly in your component.",
    ].join("\n")
  )
}

// Usage
class ClassComponent extends React.Component {
  render() {
    const { data: session, status } = this.props.session
    return null
  }
}

const ClassComponentWithSession = withSession(ClassComponent)

渲染支撑

import { useSession } from "next-auth/react"

const UseSession = ({ children }) => {
  const session = useSession()
  return children(session)
}

// Usage
class ClassComponent extends React.Component {
  render() {
    return (
      <UseSession>
        {(session) => <pre>{JSON.stringify(session, null, 2)}</pre>}
      </UseSession>
    )
  }
}