回答編集履歴
3
テキスト修正
test
CHANGED
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@@ -86,57 +86,65 @@
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return
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return (
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<
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<div>
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{Object.entries(selectedTime).map(([key, { start, end }]) => (
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<
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<MuiPickersUtilsProvider utils={DateFnsUtils} key={`picker-${key}`}>
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<Grid container justify="space-around">
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<KeyboardTimePicker
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margin="normal"
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id="start"
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label="Start Time"
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value={start}
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onChange={date => handleTimeChange(key, "start", date)}
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KeyboardButtonProps={{
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"aria-label": "change time"
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}}
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/>
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<KeyboardTimePicker
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margin="normal"
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id="end"
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label="End Time"
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value={end}
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onChange={date => handleTimeChange(key, "end", date)}
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KeyboardButtonProps={{
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"aria-label": "change time"
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}}
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/>
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</Grid>
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</MuiPickersUtilsProvider>
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))
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))}
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</div>
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);
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};
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2
テキスト修正
test
CHANGED
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@@ -31,3 +31,113 @@
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`handleEndTimeChange` のほうも同様です。
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### 追記
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リファクタリング案を挙げておきます。`map` の中で、各 `date`の変更ハンドラーを作るのではなく、ひとつの変更ハンドラですべてをまかなうこともできるかなと思います。以下のような感じです。（※動作確認はしていません）
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```jsx
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const SomeComponent = props => {
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const [selectedTime, setSelectedTime] = React.useState({
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"1": {
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start: new Date(),
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end: new Date()
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},
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"2": {
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start: new Date(),
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end: new Date()
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},
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"3": {
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start: new Date(),
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end: new Date()
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}
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});
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const handleTimeChange = (key, name, date) => {
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setSelectedTime({ ...selectedTime, [key]: { ...selectedTime[key], [name]: date } });
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};
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return Object.entries(selectedTime).map(([key, { start, end }]) => (
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<MuiPickersUtilsProvider utils={DateFnsUtils} key={`picker-${key}`}>
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<Grid container justify="space-around">
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<KeyboardTimePicker
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margin="normal"
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id="start"
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label="Start Time"
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value={start}
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onChange={date => handleTimeChange(key, "start", date)}
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KeyboardButtonProps={{
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"aria-label": "change time"
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}}
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/>
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<KeyboardTimePicker
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margin="normal"
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id="end"
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label="End Time"
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value={end}
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onChange={date => handleTimeChange(key, "end", date)}
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KeyboardButtonProps={{
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"aria-label": "change time"
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}}
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/>
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</Grid>
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</MuiPickersUtilsProvider>
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));
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};
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```
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1
テキスト修正
test
CHANGED
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@@ -24,7 +24,7 @@
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```javascript
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setSelectedTime({ ...obj, [key]: date });
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setSelectedTime({ ...obj, [key]: { ...obj[key], start: date } });
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```
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