如何使用材质表实现远程数据的乐观渲染?

时间:2019-04-18 18:52:07

标签: material-table

我正在将库material-table用于应用程序中的数据表。我正在设置数据道具以使用来自this.state.data的数据,并通过使用setState在我的表上更新行。但是,切换到远程数据后,该表在添加一行后不会更新。还有另一种方法可以通过远程数据实现这一目标吗?

import React, {Component} from "react";
import MaterialTable from "material-table";
import Add from "@material-ui/icons/Add";
import Clear from "@material-ui/icons/Clear";
import Check from "@material-ui/icons/Check";
import Edit from "@material-ui/icons/Edit";
import FirstPage from "@material-ui/icons/FirstPage";
import ChevronRight from "@material-ui/icons/ChevronRight";
import LastPage from "@material-ui/icons/LastPage";
import ChevronLeft from "@material-ui/icons/ChevronLeft";
import Search from "@material-ui/icons/Search";
import ReactDOM from "react-dom";

import "./styles.css";

class App extends Component {
  state = {
    data: []
  }
  render() {
  return (
    <MaterialTable
      columns={[
        {
          title: "Avatar",
          field: "avatar",
          render: rowData => (
            <img
              style={{ height: 36, borderRadius: "50%" }}
              src={rowData.avatar}
            />
          )
        },
        { title: "Id", field: "id" },
        { title: "First Name", field: "first_name" },
        { title: "Last Name", field: "last_name" }
      ]}
      icons={{
        Add: () => <Add />,
        Check: () => <Check />,
        Clear: () => <Clear />,
        Edit: () => <Edit />,
        FirstPage: () => <FirstPage />,
        NextPage: () => <ChevronRight />,
        LastPage: () => <LastPage />,
        PreviousPage: () => <ChevronLeft />,
        ResetSearch: () => <Clear />,
        Search: () => <Search />
      }}

      // If this is an array from state(ie. this.state.data) then it works.
      data={query =>
        new Promise((resolve, reject) => {
          let url = "https://reqres.in/api/users?";
          url += "per_page=" + query.pageSize;
          url += "&page=" + (query.page + 1);
          fetch(url)
            .then(response => response.json())
            .then(result => {
              resolve({
                data: result.data,
                page: result.page - 1,
                totalCount: result.total
              });
            });
        })
      }
      editable={{
        onRowAdd: newData =>
          new Promise((resolve, reject) => {
            setTimeout(() => {
              {
                const data = this.state.data;
                data.push(newData);
                this.setState({ data }, () => resolve());
              }
              resolve();
            }, 1000);
          })
      }}
      title="Remote Data Example"
    />
  )
    }
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

1 个答案:

答案 0 :(得分:2)

有一个解决方案,调用该功能来管理材料表的所有查询事件

您可以创建对表的React引用。在那一刻,您可以访问该功能。 如果需要,可以使用它直接将值传递给函数。

这些是步骤: 1-创建一个值并分配React.createRef() 让tableRef = React.createRef()

2-将其分配给名为tableRef

的材料表属性

 tableRef = {tableRef}

3-然后,当您需要更新表时,可以调用函数onQueryChange(),不带任何参数。

tableRef.current.onQueryChange()

例如:

`async apiDelete(IDs) {
try {
  await Service.delete(IDs);
  this.state.tableRef.current.onQueryChange();
} catch (e) {
  console.log("Error Deleting" + e);
}

}`

您可以执行其他操作,例如: this.state.tableRef.current.onQueryChange({filters: "value"});

请创建console.log(tableRef)以查看所有操作。

让我知道这是否对您有帮助 问候