过滤器不会在输入文本更改时应用：ReactJS

Question

我正在尝试实现一个搜索过滤器来搜索整个 table 中的字符。过滤器未正确应用。我正在为数据网格使用 react-table。我在每个输入上触发更改处理程序，然后使用过滤器过滤掉数据。无法实现相同

不胜感激。

https://codesandbox.io/s/happy-hooks-tblde

import React from "react";
import ReactDOM from "react-dom";
import { Input } from "semantic-ui-react";
import ReactTable from "react-table";
import "react-table/react-table.css";
import "./styles.css";

export default class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      data: [],
      filteredData: [],
      columns: [],
      searchInput: ""
    };
  }

  componentDidMount() {
    this.getData();
    this.getColumns();
  }

  getColumns = () => {
    let columns = [
      {
        Header: "First Name",
        accessor: "firstName"
      },
      {
        Header: "Status",
        accessor: "status"
      },
      {
        Header: "Visits",
        accessor: "visits"
      }
    ];
    this.setState({ columns });
  };

  getData = () => {
    let data = [
      { firstName: "aaaaa", status: "Pending", visits: 155 },
      { firstName: "aabFaa", status: "Pending", visits: 155 },
      { firstName: "adaAAaaa", status: "Approved", visits: 1785 },
      { firstName: "aAaaaa", status: "Approved", visits: 175 },
      { firstName: "adaSaaa", status: "Cancelled", visits: 165 },
      { firstName: "aasaaa", status: "Cancelled", visits: 157 },
      { firstName: "aweaaaaaewea", status: "Approved", visits: 153 },
      { firstName: "adaAAadsdweaa", status: "Approved", visits: 17585 },
      { firstName: "aAaaaa", status: "Approved", visits: 175 },
      { firstName: "adadsdSaaa", status: "Cancelled", visits: 165 }
    ];
    this.setState({ data });
  };

  handleChange = event => {
    this.setState({ searchInput: event.target.value }, () => {
      this.globalSearch();
    });
  };

  globalSearch = () => {
    let { data, searchInput } = this.state;
    let filteredData = data.filter(value => {
      return (
        value.firstName.toLowerCase().includes(searchInput.toLowerCase()) ||
        value.status.toLowerCase().includes(searchInput.toLowerCase()) ||
        value.visits
          .toString()
          .toLowerCase()
          .includes(searchInput.toLowerCase())
      );
    });
    this.setState({ filteredData });
  };

  render() {
    let { data, columns, searchInput, filteredData } = this.state;
    return (
      <div>
        <Input
          size="large"
          name="searchInput"
          value={searchInput || ""}
          onChange={this.handleChange}
          label="Search"
        />
        <ReactTable
          data={filteredData.length > 0 && filteredData ? filteredData : data}
          columns={columns}
          defaultPageSize={10}
          className="-striped -highlight"
        />
      </div>
    );
  }
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

Answer 1

嗯，错误在这里 data={(filteredData.length > 0 && filteredData) ? filteredData: data} 所以这里如果 filteredData 的长度为 0，它将 return 数据数组！所以我所做的是检查输入是否具有一定的价值：

  (filteredData.length > 0 && filteredData) || searchInput? filteredData: data

如果输入有值，它将 return filteredData 为空！

import React from "react";
import ReactDOM from "react-dom";
import { Input } from "semantic-ui-react";
import ReactTable from "react-table";
import "react-table/react-table.css";
import "./styles.css";

export default class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      data: [],
      filteredData: [],
      columns: [],
      searchInput: ""
    };
  }

  componentDidMount() {
    this.getData();
    this.getColumns();
  }

  getColumns = () => {
    let columns = [
      {
        Header: "First Name",
        accessor: "firstName"
      },
      {
        Header: "Status",
        accessor: "status"
      },
      {
        Header: "Visits",
        accessor: "visits"
      }
    ];
    this.setState({ columns });
  };

  getData = () => {
    let data = [
      { firstName: "aaaaa", status: "Pending", visits: 155 },
      { firstName: "aabFaa", status: "Pending", visits: 155 },
      { firstName: "adaAAaaa", status: "Approved", visits: 1785 },
      { firstName: "aAaaaa", status: "Approved", visits: 175 },
      { firstName: "adaSaaa", status: "Cancelled", visits: 165 },
      { firstName: "aasaaa", status: "Cancelled", visits: 157 },
      { firstName: "aweaaaaaewea", status: "Approved", visits: 153 },
      { firstName: "adaAAadsdweaa", status: "Approved", visits: 17585 },
      { firstName: "aAaaaa", status: "Approved", visits: 175 },
      { firstName: "adadsdSaaa", status: "Cancelled", visits: 165 }
    ];
    this.setState({ data });
  };

  handleChange = event => {
    this.setState({ searchInput: event.target.value }, () => {
      this.globalSearch();
    });
  };

  globalSearch = () => {
    let { data, searchInput } = this.state;
    let filteredData = data.filter(value => {
      return (
        value.firstName.toLowerCase().includes(searchInput.toLowerCase()) ||
        value.status.toLowerCase().includes(searchInput.toLowerCase()) ||
        value.visits
          .toString()
          .toLowerCase()
          .includes(searchInput.toLowerCase())
      );
    });
    this.setState({ filteredData: filteredData });
  };

  render() {
    let { data, columns, searchInput, filteredData } = this.state;
    return (
      <div>
        <Input
          size="large"
          name="searchInput"
          value={searchInput || ""}
          onChange={this.handleChange}
          label="Search"
        />
        <ReactTable
          data={
            (filteredData.length > 0 && filteredData) || searchInput
              ? filteredData
              : data
          }
          columns={columns}
          defaultPageSize={10}
          className="-striped -highlight"
        />
      </div>
    );
  }
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

Answer 2

在您的第二种方法中，错误来自 handleSetData = data =>{this.setState({data});}; 您正在根据 filterdata 更改数据状态，这就是为什么您的数据会消失您需要做的是像这样传递设置 datafilter 状态：

handleSetData = data => {this.setState({ filteredData: data });};

并且在 ReactTable 你需要像这样渲染 FilterData 或 data：

data={this.state.filteredData ? this.state.filteredData : data}

import React from "react";
import ReactDOM from "react-dom";
import GlobalSearchComponent from "./GlobalSearchComponent";
import ReactTable from "react-table";
import "react-table/react-table.css";
import "./styles.css";

export default class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      data: [],
      filteredData: null,
      columns: [],
      searchInput: ""
    };
  }

  componentDidMount() {
    this.getData();
    this.getColumns();
  }

  getColumns = () => {
    let columns = [
      {
        Header: "First Name",
        accessor: "firstName",
        sortable: false,
        show: true,
        displayValue: " First Name"
      },
      {
        Header: "Status",
        accessor: "status",
        sortable: false,
        show: true,
        displayValue: "Status "
      },
      {
        Header: "Visits",
        accessor: "visits",
        sortable: false,
        show: true,
        displayValue: " Visits "
      }
    ];
    this.setState({ columns });
  };

  getData = () => {
    let data = [
      { firstName: "aaaaa", status: "Pending", visits: 155 },
      { firstName: "aabFaa", status: "Pending", visits: 155 },
      { firstName: "adaAAaaa", status: "Approved", visits: 1785 },
      { firstName: "aAaaaa", status: "Approved", visits: 175 },
      { firstName: "adaSaaa", status: "Cancelled", visits: 165 },
      { firstName: "aasaaa", status: "Cancelled", visits: 157 },
      { firstName: "aweaaaaaewea", status: "Approved", visits: 153 },
      { firstName: "adaAAadsdweaa", status: "Approved", visits: 17585 },
      { firstName: "aAaaaa", status: "Approved", visits: 175 },
      { firstName: "adadsdSaaa", status: "Cancelled", visits: 165 },
      { firstName: "dsdcdaaaaa", status: "Cancelled", visits: 157 },
      { firstName: "aaadvsaa", status: "Submitted", visits: 5153 },
      { firstName: "aaaaswea", status: "Pending", visits: 1555 },
      { firstName: "aaaaauwe", status: "Submitted", visits: 155 }
    ];
    this.setState({ data });
  };

  handleSetData = data => {
    this.setState({ filteredData: data });
  };

  render() {
    let { data, columns } = this.state;
    return (
      <div>
        <GlobalSearchComponent
          data={this.state.data}
          handleSetData={this.handleSetData}
        />
        <ReactTable
          data={this.state.filteredData ? this.state.filteredData : data}
          columns={columns}
          defaultPageSize={10}
          className="-striped -highlight"
        />
      </div>
    );
  }
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

过滤器不会在输入文本更改时应用：ReactJS

Filter does not get applied on change of input text: ReactJS

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ecmascript-6

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