Redux-orm在添加数据后不调用mapStateToProps

Question

我在使用redux-orm，在添加实体后，我的选择器没有使用mapStateToProps中的新对象进行更新，因此导致不会再次调用render()。我已经看过了教程，但看不出我做错了什么：

另一个组件正在调用BookReducer，所以我知道100%的reducer正在被调用。

这是我的reducer：

export default function BookReducer(state = initialState, action) {

    const session = orm.session(state);

    switch (action.type) {

        case 'newBook':

            session.Book.create({ id: 0, type: 'novel' });

            //I can see verify that the object has been added  to the ORM
            console.log(session.Book.all().toRefArray())
     }

     return session.state; 
}

下面是我的选择器：

import orm from './orm';

const BookSelector = createSelector(orm, state => state.orm, session => {
    return session.Book.all().toRefArray()
});

下面是我的组件：

class Main extends React.Component {

  constructor(props) {
      super(props);
  }

  render() {

    console.log("debug")
    console.log(this.props.books)

    return (
       <div>
           {this.props.books}
       </div>
    )


    function mapStateToProps(state) {

       return {
          isOpen: true,
          books: BookSelector(state)
       };
    }
}

Answer 1

您似乎没有将主组件与mapStateToProps连接起来。USe connect喜欢export default connect(mapStateToProps)(Main);，并在Main组件外部定义它

import connect from 'react-redux';

class Main extends React.Component {

  constructor(props) {
      super(props);
  }

  render() {

    console.log("debug")
    console.log(this.props.books)

    return (
       <div>
           {this.props.books}
       </div>
    )



}

  function mapStateToProps(state) {

       return {
          isOpen: true,
          books: BookSelector(state)
       };
    }
export default connect(mapStateToProps)(Main);

此外，您还需要导出和导入BookSelector

import orm from './orm';

const BookSelector = createSelector(orm, state => state.orm, session => {
    return session.Book.all().toRefArray()
});
export default BookSelector;