React-Leaflet 搜索框实现

Question

是否有任何资源显示使用 react-leaflet 实现搜索框？

我想让我的地图图钉填充到一个搜索结果中，以便查询和检索我现有的数据。

即：

const names = [

  {name: 'Joe', location: '40.734621, -73.989341 '},
  {name: 'Seth', location: '45.77621, -73.789654 '},

]

然后，在搜索 Joe 或 Seth 之后，地图将填充位置坐标。

我找到了leaflet.js 的示例，但找不到任何使用react-leaflet 旋转的示例。

Answer 1

看看leaflet-geosearch

用npm install --save leaflet-geosearch安装它

那么你只需要用它构建一个组件：

import { GeoSearchControl, OpenStreetMapProvider } from 'leaflet-geosearch';

class Search extends MapControl {

  createLeafletElement() {
    return GeoSearchControl({
      provider: new OpenStreetMapProvider(),
      style: 'bar',
      showMarker: true,
      showPopup: false,
      autoClose: true,
      retainZoomLevel: false,
      animateZoom: true,
      keepResult: false,
      searchLabel: 'search'
    });
  }
}

export default Search;

并在您的地图中使用您的组件：

render() {
  return (
    <Map>
      (...)
      <Search />
    </Map>
  );
}

Answer 2

我想我找到了一种更简单的方法，无需创建和扩展类。

import { Map, useLeaflet } from 'react-leaflet'
import { OpenStreetMapProvider, GeoSearchControl } from 'leaflet-geosearch'

// make new leaflet element
const Search = (props) => {
    const { map } = useLeaflet() // access to leaflet map
    const { provider } = props

    useEffect(() => {
        const searchControl = new GeoSearchControl({
            provider,
        })

        map.addControl(searchControl) // this is how you add a control in vanilla leaflet
        return () => map.removeControl(searchControl)
    }, [props])

    return null // don't want anything to show up from this comp
}


export default function Map() {
  return (
    <Map {...otherProps}>
      {...otherChildren}
      <Search provider={new OpenStreetMapProvider()} />
    </Map>

  )
}