花了2天时间将mapus里的bug定位到。
每当画线或面域的时候，无法捕捉，并且出现错误提示，但无法定位。
原来的代码如下：
代码语言：javascript复制 // Render a new object
async function renderShape(snapshot, key) {
// var user = await checkAuth();
// if (await checkAuth() != false) {
if (snapshot.type == "draw" || snapshot.type == "line" || snapshot.type == "area") {
if (objects.filter(function(result) {
return result.id === key && result.user === snapshot.user
}).length == 0) {
// If the shape doesn't exist locally, create it
var line = L.polyline([
[snapshot.initlat, snapshot.initlng]
], {
color: snapshot.color,
// pmIgnore: false
});
if (snapshot.completed && (snapshot.type == "line" || snapshot.type == "area")) {
// If the shape is already finished, give it all its coordinates
line = L.polyline(snapshot.path, {
color: snapshot.color,
// pmIgnore: false
}); // 这里是否允许激活线段编辑
}
line.addTo(map); // 这里导致无法捕捉！！修改后的代码如下
代码语言：javascript复制 // Render a new object
async function renderShape(snapshot, key) {
// var user = await checkAuth();
// if (await checkAuth() != false) {
if (snapshot.type == "draw" || snapshot.type == "line" || snapshot.type == "area") {
if (objects.filter(function(result) {
return result.id === key && result.user === snapshot.user
}).length == 0) {
// If the shape doesn't exist locally, create it
if (snapshot.completed && (snapshot.type == "line" || snapshot.type == "area")) {
// If the shape is already finished, give it all its coordinates
line = L.polyline(snapshot.path, {
color: snapshot.color,
pmIgnore: false
}); // 这里是否允许激活线段编辑
line.addTo(map);// 放到这里就可以了。
} else {
var line = L.polyline([
[snapshot.initlat, snapshot.initlng]
], {
color: snapshot.color,
pmIgnore: false
});
}原因分析：因为从数据库里读取图元，用上面这个rendershape方法添加到页面上，但是有些多段线不具备completed时，也被添加到页面上，但看不见，我估计是一些错误的数据——比如画了一半的多段线，按了取消键，这个时候数据存到数据库里了，但是completed=false。按照上述修改后，只将满足completed=true的多段线加到页面上。
