如何禁用 Material-UI 的“选择”组件中的某些选项，例如“自动完成”中的选项？

Question

有什么方法可以禁用Select 组件中的某些选项，例如Autocomplete

PS：选项在数组中

 <FormControl variant="outlined">
        <InputLabel>States</InputLabel>
        <Select native
          defaultValue=""
          // value={value}
          onChange={inputEvent}
          label="States"
        >
          {fetchedStates.map((states, i) => (
            <option key={states + i} value={states}>
              {states}
            </option>
          ))}
        </Select>
      </FormControl>

Answer 1

执行此操作的方法Select是将disabled属性添加到（如下面示例中的MenuItem“Twenty”所示）。MenuItem

import React from "react";
import { makeStyles } from "@material-ui/core/styles";
import InputLabel from "@material-ui/core/InputLabel";
import MenuItem from "@material-ui/core/MenuItem";
import FormControl from "@material-ui/core/FormControl";
import Select from "@material-ui/core/Select";

const useStyles = makeStyles(theme => ({
  formControl: {
    margin: theme.spacing(1),
    minWidth: 120
  },
  selectEmpty: {
    marginTop: theme.spacing(2)
  }
}));

export default function SimpleSelect() {
  const classes = useStyles();
  const [age, setAge] = React.useState("");

  const handleChange = event => {
    setAge(event.target.value);
  };

  return (
    <div>
      <FormControl variant="outlined" className={classes.formControl}>
        <InputLabel id="demo-simple-select-outlined-label">Age</InputLabel>
        <Select
          labelId="demo-simple-select-outlined-label"
          id="demo-simple-select-outlined"
          value={age}
          onChange={handleChange}
          label="Age"
        >
          <MenuItem value="">
            <em>None</em>
          </MenuItem>
          <MenuItem value={10}>Ten</MenuItem>
          <MenuItem disabled value={20}>
            Twenty
          </MenuItem>
          <MenuItem value={30}>Thirty</MenuItem>
        </Select>
      </FormControl>
    </div>
  );
}

对于 Native Select，您可以使用以下disabledprop <option>：

import React from "react";
import { makeStyles } from "@material-ui/core/styles";
import InputLabel from "@material-ui/core/InputLabel";
import FormControl from "@material-ui/core/FormControl";
import Select from "@material-ui/core/Select";

const useStyles = makeStyles(theme => ({
  formControl: {
    margin: theme.spacing(1),
    minWidth: 120
  },
  selectEmpty: {
    marginTop: theme.spacing(2)
  }
}));

export default function SimpleSelect() {
  const classes = useStyles();
  const [age, setAge] = React.useState("");

  const handleChange = event => {
    setAge(event.target.value);
  };

  return (
    <div>
      <FormControl variant="outlined" className={classes.formControl}>
        <InputLabel id="demo-simple-select-outlined-label">Age</InputLabel>
        <Select
          labelId="demo-simple-select-outlined-label"
          id="demo-simple-select-outlined"
          value={age}
          onChange={handleChange}
          label="Age"
          native
        >
          <option aria-label="None" value="" />
          <option value={10}>Ten</option>
          <option disabled value={20}>
            Twenty
          </option>
          <option value={30}>Thirty</option>
        </Select>
      </FormControl>
    </div>
  );
}

如果选项位于数组中，您只需要有某种方法来确定应禁用哪些选项。下面的示例显示了执行此操作的一种方法，其中选项数据包含是否应禁用该选项。

import React from "react";
import { makeStyles } from "@material-ui/core/styles";
import InputLabel from "@material-ui/core/InputLabel";
import FormControl from "@material-ui/core/FormControl";
import Select from "@material-ui/core/Select";

const useStyles = makeStyles(theme => ({
  formControl: {
    margin: theme.spacing(1),
    minWidth: 120
  },
  selectEmpty: {
    marginTop: theme.spacing(2)
  }
}));

const options = [
  { value: 10, label: "Ten" },
  { value: 20, label: "Twenty", disabled: true },
  { value: 30, label: "Thirty" }
];

export default function SimpleSelect() {
  const classes = useStyles();
  const [age, setAge] = React.useState("");

  const handleChange = event => {
    setAge(event.target.value);
  };

  return (
    <div>
      <FormControl variant="outlined" className={classes.formControl}>
        <InputLabel id="demo-simple-select-outlined-label">Age</InputLabel>
        <Select
          labelId="demo-simple-select-outlined-label"
          id="demo-simple-select-outlined"
          value={age}
          onChange={handleChange}
          label="Age"
          native
        >
          <option aria-label="None" value="" />
          {options.map(option => (
            <option value={option.value} disabled={option.disabled}>
              {option.label}
            </option>
          ))}
        </Select>
      </FormControl>
    </div>
  );
}