我正在尝试构建过滤系统。有两个过滤器菜单。一个是房间数量，另一个是财产类型。我已将 json 文件从 api 加载到空间对象。但是当我尝试将所有这些空间传递给 SpaceFilterResults 组件时，我的空间数组返回为 [undefined, undefined]。

我的过滤器代码

class FilterSpace1 extends React.Component {
  constructor() {
    super();

    this.handleFormInput = this.handleFormInput.bind(this);

    this.state = {
      space:[],
      propertyType: 0,
      rooms: 0
    }
  }

  componentDidMount(){
        this.loadRoomFromServer();
    }

    loadRoomFromServer(){
        $.ajax({
            url:'/api/rentals/',
            dataType:'json',
            success: (data) => {
                console.log('data',data);
                this.setState({space: data.results});
                console.log('success',this.state.space);
              },
              error: (xhr, status, err) => {
                console.error(url, status, err.toString());
              }
            });
    }

  handleFormInput(propertyType, rooms) {
    this.setState({
      propertyType: propertyType,
      rooms: rooms
    })
  }

  render() {
   let space = _.map(this.state.space, (space,id) => {
    console.log('space is',space); // has an array as shown below
      <SpaceFilterResults
            key = {id}
            space={space}
            propertyType={this.state.propertyType}
            rooms={this.state.rooms}
          />
   });
   console.log('space',space); //i get space [undefined, undefined] instead of all the spaces

    return (
      <div className="filter">
        <SpaceFilterMenu
          propertyType={this.state.propertyType}
          rooms={this.state.rooms}
          onFormInput={this.handleFormInput}
        />
        {space}
      </div>
    )
  }
}

 class SpaceFilterMenu extends React.Component {
   constructor() {
     super();
     this.handleChange = this.handleChange.bind(this);
   }

   handleChange() {
     this.props.onFormInput (
       this.refs.propertyTypeInput.value,
       this.refs.roomsInput.value
     );
   }

   render() {
     return (
      <div className="container">
        <div className="row">
           <form className="filter-menu">
             <label htmlFor="roomsInput">Number of rooms</label>
              <select id="roomsInput" ref="roomsInput" onChange={this.handleChange}>
                 <option value="1">1</option>
                 <option value="2">2</option>
                 <option value="3">3</option>
                 <option value="4">4</option>
                 <option value="5">5</option>
                 <option value="6">6</option>
              </select>

             <label htmlFor="propertyTypeInput">propertyType</label>
             <select id="propertyTypeInput" ref="propertyTypeInput" onChange={this.handleChange}>
               <option value="Appartment">Appartment</option>
               <option value="House">House</option>
               <option value="Shop">Shop</option>
               <option value="Bunglow">Bunglow</option>
             </select>
           </form>
          </div>
      </div>
     );
   }
 }

class SpaceFilterResults extends React.Component {
  constructor() {
    super();
  }

  render() {
    var results = [];

   this.props.space.map((space) => {
    if(this.props.roomsInput===0){
      results.push(<Space space = {space} />);
    }
    else if (space.roomsInput === this.props.roomsInput) {
        results.push(<Space space={space} />);
      }
   });

    this.props.space.map((space) => {
      if (this.props.propertyType === 0 ) {
        results.push(<Space space={space} />);
      }
      else if (space.propertyType === this.props.propertyType) {
        results.push(<Space space={space} />);
      }
    });

    return (
      <div className="container">
        <div className="row">
          <div className="col-md-4">
             <div className="filter-results">
                <ul className="blocks blocks_3up">
                  {results}
                </ul>
              </div>
          </div>
        </div>
      </div>

    )
  }
}

class Space extends React.Component {
  constructor () {
    super();
  }

  render () {
    return (
      <li>
        <div className="feature">
          <div className="feature-hd">
            <h2 class="hdg hdg_2">{this.props.space.listingName}</h2>
          </div>
          <div className="feature-bd">
            <p>{this.props.space.room}</p>
          </div>
          <div className="feature-ft">
            <p>{this.props.space.property}% rooms</p>
          </div>
        </div>
      </li>
    )
  }
}                            

export default FilterSpace1;

我的 json 文件看起来像（/api/rentals/）

console.log('space is',space) 的输出给出的空间是 Object {id: 1, renter: "admin", gallery: Array[2], ownerName: "tushant khatiwada", email: "tushant@gmail. com"…}

我做错了什么？如何将这些所有空间数据传递给 SpaceFilterResults 组件？