[英]How to get auto-generated document ID before uploading file to Firebase storage, and use that ID as a storage reference for Web?
在使用 Firestore 自动生成的 ID 将一批写入提交到 Firestore 之前，我有一种方法可以将图像文件上传到 Firebase 存储。 在将文件上传到Firestore之前，开发代码等待文件上传获取下载URL。
但是，我想使用 Firestore 文档的自动生成的 ID 作为存储参考。
这是我的代码：
try {
// To replace "organization.uid" with the auto-generated id by Firestore "organization_doc_ref.id".
const storageRef = ref(this.storage, `organizations/${organization.uid}`);
await uploadBytes(storageRef, blob).then(() => {
console.info('Uploaded a blob or file!');
});
organization.logo_url = await getDownloadURL(storageRef);
const batch = writeBatch(this.firestore);
const organization_doc_ref = doc(
collection(this.firestore, 'organizations')
);
batch.set(organization_doc_ref, organization);
const usernameDocRef = doc(
this.firestore,
'usernames',
organization.username
);
batch.set(usernameDocRef, { uid: organization_doc_ref.id });
await batch.commit();
console.log('Organization successfully created...');
} catch (error) {
return console.error('Error writing document: ', error);
}
您只需要重新排序您的说明，以便首先定义文档参考。 文档的 ID 将在本地生成，并且在您调用batch.commit()之前它不会与您的服务器交互。
try {
const organization_doc_ref = doc(
collection(this.firestore, 'organizations')
);
const storageRef = ref(this.storage, `organizations/${organization_doc_ref.id}`);
await uploadBytes(storageRef, blob);
console.info('Uploaded a blob or file!'); // avoid putting this in then() if using await
organization.logo_url = await getDownloadURL(storageRef);
const batch = writeBatch(this.firestore);
batch.set(organization_doc_ref, organization);
const usernameDocRef = doc(
this.firestore,
'usernames',
organization.username
);
batch.set(usernameDocRef, { uid: organization_doc_ref.id }); // avoid using uid as it is often linked with the current Firebase Auth user's ID, use imgId, orgId or something similar
await batch.commit();
console.log('Organization successfully created...');
} catch (error) {
return console.error('Error writing document: ', error);
}
问题未解决？试试以下方法：
使用 Firestore 自动生成的 ID 代替 Firebase 用户自动生成的 ID 是否安全？
[英]Is it safe to use a Firestore auto-generated ID in place of the Firebase user auto-generated ID?
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