[英]How to delete a document that has a subdocument in firestore database?
如何刪除在firestore數據庫中有子文檔的文檔?
這是集合結構
我在下面嘗試了這些但沒有任何工作,我得到了console.log('deleted')
但在數據庫中,文檔仍然顯示
firebase.firestore()
.collection("users")
.doc("3F0SezA3").delete()
.then(function () {
console.log('deleted');
}, function (error) {
console.error('Delete Error', error);
});
firebase.firestore()
.collection("users").doc("3F0SezA3")
.collection("movives").doc("asdrftgyqweAsdghj120a").delete()
.then(function () {
console.log('deleted');
}, function (error) {
console.error('Delete Error', error);
});
如果要同時刪除兩個文檔,最好使用批量寫入,如下:
var batch = firebase.firestore().batch();
var parentRef = firebase.firestore()
.collection("users")
.doc("3F0SezA3");
batch.delete(parentRef);
var childRef = parentRef
.collection("movives")
.doc("asdrftgyqweAsdghj120a");
batch.delete(childRef);
batch.commit()
.then(function () {
console.log("Docs deleted")
})
.catch(function (error) {
console.log(error)
});
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