[英]Leaflet - How to create a marker using data from a pop-up form
我從javascript開始,以解決這個難題為紐帶。
我希望用戶單擊地圖時出現一個表單。 當他們填寫表單時,我想在該位置創建一個標記,並將該標記的彈出內容設置為表單中的值。 完成添加表單后,我還將表單數據發送到數據庫。
表單有效,但是我無法解決如何從處理表單提交的函數訪問彈出位置數據。
這是我的代碼:
function onMapClick(e) {
popLocation = e.latlng;
var popup = L.popup({
closeButton: true})
.setLatLng(e.latlng)
.setContent(popupForm)
.openOn(map);
$("#popup-form").submit(function(e){
e.preventDefault();
console.log(e);
var geojsonFeature = {
"type": "Feature",
"properties": {
"type": $("input[name='goodBad']:checked").val(),
"location": L.DomUtil.get('location').value,
"reason": L.DomUtil.get('reason').value,
"improve": L.DomUtil.get('improve').value
},
"geometry": {
"type": "Point",
"coordinates": popLocation
}
};
L.geoJson(geojsonFeature, {
pointToLayer: function (feature, latlng) {
marker = L.marker(geojsonFeature.geometry.coordinates, {
icon: L.AwesomeMarkers.icon({icon: 'info', prefix: 'fa', markerColor: markCol}),
riseOnHover: true,
draggable: true //define the content to be added to the marker
}).bindPopup(popupForm);
marker.on("popupopen", onPopupOpen);
openOn(map);
return marker;
}
}).addTo(map);
map.closePopup();
});
所需表格如下:
var popupForm = '<form id="popup-form" class="form-container"> \
<h2>Add a point:</h2>\
<strong> The air quality here is: </strong> <br> \
<label for="type">Good</label> \
<input type="radio" name="goodBad" value ="good" id="good"> \
<label for="type">Bad </label> \
<input type="radio" name="goodBad" value = "bad" id="bad"> \
<br><br></c> \
<label for="location"><b>Location Name</b></label> \
<input type="text" placeholder="eg. Redbridge flyover" id="location" > \
<label for="reason"><b>Why are you adding this point? - be specific!</b></label> \
<input type="text" placeholder="eg. There is a traffic jam every saturday 11am" id="reason" > \
<label for="solution"><b>How would you improve air quality at this location? <br>(If you ran the city)</b></label> \
<input type="text" placeholder="eg. I\'d close the road when when school starts and stops" id="improve"> \
<button type="submit" id="btn-submit" class="btn">Save</button> \
<input type="hidden" id= "hiddenField" name="id" value="" /> \
</form>';
非常感謝
我將通過以下步驟來解決此問題:
1)通過geoJSON渲染所有點/標記,現在將其稱為foobarJSON。
2)在單擊事件中,捕獲單擊地圖的位置的坐標。
3)然后將該坐標附加到foobarJSON並使用新版本的foobarJSON更新傳單
4)使用新坐標更新數據庫
對於第3步,可能會執行以下操作:
function updateFeature(updatedGeoJsonData) {
var updatedFeature = myFeaturesMap[updatedGeoJsonData.properties.objectID];
updatedFeature.clearLayers(); // Remove the previously created layer.
updatedFeature.addData(updatedGeoJsonData); // Replace it by the new data.
}
參考: 就地更新傳單GeoJSON功能
希望能有所幫助
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.