[英]Iterating Google Drive files using API for metadata
I want to display drive file metadata 我想显示驱动器文件元数据
"iconLink", "thumbnailLink" “ iconLink”,“ thumbnailLink”
of each of the files in drive, but getting output for fields like kind, id, name, mimeType only. 驱动器中每个文件的名称,但仅获取种类,id,名称,mimeType等字段的输出。 While other fields are not displayed.
而其他字段未显示。
function loadDriveApi() {
gapi.client.load('drive', 'v3', listFiles);
}
function listFiles() {
var request = gapi.client.drive.files.list({});
request.execute(function(resp) {
var files = resp.files;
if (files && files.length > 0) {
for (var i = 0; i < files.length; i++) {
var file = files[i];
appendPre(file.iconLink);
}
} else {
appendPre('No files found.');
}
});
}
at least you will need the scope: https://www.googleapis.com/auth/drive.metadata.readonly + OAuth (API-Key & Client-ID) 至少您将需要以下范围: https : //www.googleapis.com/auth/drive.metadata.readonly + OAuth(API密钥和客户端ID)
you can test it at: https://developers.google.com/drive/v3/reference/files/list 您可以在以下位置对其进行测试: https : //developers.google.com/drive/v3/reference/files/list
in the "fields" input add: files(iconLink,thumbnailLink) 在“字段”输入中添加:files(iconLink,thumbnailLink)
if you use https://apis.google.com/js/api.js , be sure to add your domain to API-Key -> HTTP-Referrer & Client-ID -> JavaScript-Source & Forwarding-URI (@ https://console.developers.google.com/apis/credentials ) 如果您使用https://apis.google.com/js/api.js ,请确保将您的域添加到API-Key-> HTTP-Referrer&Client-ID-> JavaScript-Source&Forwarding-URI(@ https ://console.developers.google.com/apis/credentials )
you can find a basic gapi usage sample here: https://github.com/google/google-api-javascript-client/blob/51aa25bed4f6c36d8e76fd3b9f7e280ded945c98/samples/loadedDiscovery.html 您可以在此处找到基本的gapi使用示例: https : //github.com/google/google-api-javascript-client/blob/51aa25bed4f6c36d8e76fd3b9f7e280ded945c98/samples/loadedDiscovery.html
I promisified the gapi client a bit some time ago, because I disliked the mix of callbacks and thenables in the methods.. this worked for me (assuming api.js was already loaded), but only hold 100 file entries in the response. 不久前,我承诺了gapi客户端,因为我不喜欢方法中回调和thenables的混合..这对我有用(假设api.js已经加载),但响应中仅包含100个文件条目。
window.gapiPromisified = {
apiKey: 'XXXXXXXXXXX',
clientId: 'XXXXX-XXXXXX.apps.googleusercontent.com'
}
window.gapiPromisified.init = function init () {
return new Promise(resolve => {
gapi.load('client:auth2', () => {
if (!document.getElementById('gapiAuthButton')) {
let authButton = document.createElement('button')
authButton.id = 'gapiAuthButton'
authButton.style.display = 'none'
authButton.style.marginLeft = 'auto'
authButton.style.marginRight = 0
document.body.insertBefore(authButton, document.body.firstChild)
authButton.addEventListener('click', () => {
let GoogleAuth = gapi.auth2.getAuthInstance()
if (GoogleAuth.isSignedIn.get()) {
GoogleAuth.signOut()
} else {
GoogleAuth.signIn()
}
})
}
gapi.client.setApiKey(this.apiKey)
gapi.auth2.init({ client_id: this.clientId })
.then(() => resolve())
})
})
}
window.gapiPromisified.signIn = function signIn () {
return new Promise(resolve => {
let GoogleAuth = gapi.auth2.getAuthInstance()
// Listen for sign-in state changes
GoogleAuth.isSignedIn.listen(isSignedIn => {
let authButton = document.getElementById('gapiAuthButton')
if (isSignedIn) {
authButton.textContent = 'Sign-out'
resolve()
} else {
authButton.textContent = 'Sign-in'
}
})
// Handle the initial sign-in state
let authButton = document.getElementById('gapiAuthButton')
let isSignedIn = GoogleAuth.isSignedIn.get()
authButton.textContent = (isSignedIn) ? 'Sign-out' : 'Sign-in'
document.getElementById('gapiAuthButton').style.display = 'block'
if (isSignedIn) {
resolve()
} else {
GoogleAuth.signIn()
}
})
}
window.gapiPromisified.getReady = function getReady () {
if (!gapi.hasOwnProperty('auth2')) {
return this.init()
.then(() => this.signIn())
} else {
if (gapi.auth2.getAuthInstance().isSignedIn.get()) {
return Promise.resolve()
} else {
return this.signIn()
}
}
}
window.gapiPromisified.getScopes = function getScopes (scopes) {
return new Promise((resolve, reject) => {
let GoogleUser = gapi.auth2.getAuthInstance().currentUser.get()
if (GoogleUser.hasGrantedScopes(scopes)) {
resolve()
} else {
// method returns goog.Thenable
GoogleUser.grant({ 'scope': scopes })
.then(onFulfilled => {
resolve(onFulfilled)
}, onRejected => {
reject(onRejected)
})
}
})
}
window.gapiPromisified.loadAPI = function loadAPI (urlOrObject) {
return new Promise((resolve, reject) => {
// method returns goog.Thenable
gapi.client.load(urlOrObject)
.then(onFulfilled => {
resolve(onFulfilled)
}, onRejected => {
reject(onRejected)
})
})
}
window.gapiPromisified.metadata = function metadata () {
return new Promise((resolve, reject) => {
this.getReady()
.then(() => this.getScopes('https://www.googleapis.com/auth/drive.metadata.readonly'))
.then(() => this.loadAPI('https://www.googleapis.com/discovery/v1/apis/drive/v3/rest'))
.then(() => {
gapi.client.drive.files.list({
fields: 'files(iconLink,thumbnailLink)'
})
.then(onFulfilled => {
resolve(onFulfilled)
}, onRejected => {
reject(onRejected)
})
})
})
}
window.gapiPromisified.metadata()
.then(res => {
res.result.files.forEach(file => {
console.log(file.iconLink)
console.log(file.thumbnailLink)
})
})
In the v3 you need to specify which fields you want included in the metadata response. 在v3中,您需要指定要包含在元数据响应中的字段。 See the
fields=
parameter 请参阅
fields=
参数
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