目的是使用YouTube API创建“收藏/赞”按钮。当用户点击该按钮时，视频被保存到用户的收藏夹/喜欢播放列表中。
就像在您自己的网站上实现类似Facebook按钮时的工作方式一样。
这实际上是Bertrand Martel在我之前的question发布的精彩解决方案的后续问题，我们的目标是将视频添加到Watch Later播放列表中。
此特定功能的工作代码为：
<!-- button 1 -->
<button type="submit" data-youtube-video-id="EH3gqI2NAiE" value="Watch Later" class="ma_youtube_watch_later" name="send">
<div class="ma_youtube_watch_later_text">Watch Later</div>
</button>
<!-- button 2 -->
<button type="submit" data-youtube-video-id="0EMmKIIF-zE" value="Watch Later" class="ma_youtube_watch_later" name="send">
<div class="ma_youtube_watch_later_text">Watch Later</div>
</button>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
// By Bertrand Martel: https://stackoverflow.com/a/42561941/1649673
var OAUTH2_CLIENT_ID = '28993181493-c9o6hdll3di0ssvebfd4atf13edqfu9g.apps.googleusercontent.com';
var OAUTH2_SCOPES = [
'https://www.googleapis.com/auth/youtube'
];
var init = false;
var youtube_video_id = '';
var button = null;
googleApiClientReady = function() {
gapi.auth.init(function() {
window.setTimeout(checkAuth, 1);
});
}
function checkAuth() {
gapi.auth.authorize({
client_id: OAUTH2_CLIENT_ID,
scope: OAUTH2_SCOPES,
immediate: true
}, handleAuthResult);
}
// Handle the result of a gapi.auth.authorize() call.
function handleAuthResult(authResult) {
jQuery('.ma_youtube_watch_later').off('click');
jQuery('.ma_youtube_watch_later').click(function(e) {
button = this;
var youtube_video_id = jQuery(this).attr("data-youtube-video-id");
// Add a video ID specified in the form to the playlist.
function addVideoToPlaylist() {
//addToPlaylist(jQuery('#video-id').val());
addToPlaylist(youtube_video_id);
}
if (authResult && !authResult.error) {
addVideoToPlaylist();
} else {
init = true;
gapi.auth.authorize({
client_id: OAUTH2_CLIENT_ID,
scope: OAUTH2_SCOPES,
immediate: false
}, handleAuthResult);
}
return false;
});
if (authResult && !authResult.error) {
// Authorization was successful. Hide authorization prompts and show
// content that should be visible after authorization succeeds.
jQuery('.pre-auth').hide();
jQuery('.post-auth').show();
loadAPIClientInterfaces();
jQuery('#add_to_wl').click(function(e) {
button = this;
addVideoToPlaylist(self);
});
}
}
function loadAPIClientInterfaces() {
gapi.client.load('youtube', 'v3', function() {
if (init) {
init = false;
addVideoToPlaylist();
}
});
}
// Add a video to a playlist. The "startPos" and "endPos" values let you
// start and stop the video at specific times when the video is played as
// part of the playlist. However, these values are not set in this example.
function addToPlaylist(id, startPos, endPos) {
var details = {
videoId: id,
kind: 'youtube#video'
}
if (startPos != undefined) {
details['startAt'] = startPos;
}
if (endPos != undefined) {
details['endAt'] = endPos;
}
var request = gapi.client.youtube.playlistItems.insert({
part: 'snippet',
resource: {
snippet: {
playlistId: "WL",
resourceId: details
}
}
});
request.execute(function(response) {
console.log(response);
if (!response.code) {
//jQuery('#status').html('<pre>Succesfully added the video : ' + JSON.stringify(response.result) + '</pre>');
// change button text
$(button).text('Video added');
} else if (response.code == 409) {
//jQuery('#status').html('<p>Conflict : this video is already on your Watch Later playlist</p>');
// change button text
$(button).text('Already added');
} else if (response.code == 404) {
//jQuery('#status').html('<p>Not Found : this video hasnt been found</p>');
// change button text
$(button).text('Video not found');
} else {
//jQuery('#status').html('<p>Error : code ' + response.code + '</p>');
// change button text
$(button).text('Error: Try again');
}
});
}
</script>
<script src="https://apis.google.com/js/client.js?onload=googleApiClientReady"></script>
我们在API文档中有一些PHP code samples。我们还有一些关于adding a video to playlist的文档。
如何使用PHP或/和javascript实现这一目标？
答案 0 :(得分：12)
你可以找到Like＆amp;带有以下参数的频道列表端点的收藏播放列表ID（选中this sample request）：
{
mine: true,
part: 'contentDetails'
}
您将在relatedPlaylists中获得包含likes，favorites，uploads，watch later和watch history的播放列表列表。
{
"kind": "youtube#channelListResponse",
"etag": "\"m2yskBQFythfE4irbTIeOgYYfBU/S1x68O9aSpvmndklrnSwKw_yYdE\"",
"pageInfo": {
"totalResults": 1,
"resultsPerPage": 1
},
"items": [{
"kind": "youtube#channel",
"etag": "\"m2yskBQFythfE4irbTIeOgYYfBU/ura_vsrPt5tCZkjjGbH3ihN3Bq4\"",
"id": "UCnQt5EmYRfX1uVYtwPNj7Dg",
"contentDetails": {
"relatedPlaylists": {
"likes": "LLnQt5EmYRfX1uVYtwPNj7Dg",
"favorites": "FLnQt5EmYRfX1uVYtwPNj7Dg",
"uploads": "UUnQt5EmYRfX1uVYtwPNj7Dg",
"watchHistory": "HL",
"watchLater": "WL"
}
}
}]
}
对于WatchLater＆amp; WatchHistory，playlistId对所有用户（分别为WL＆amp; HL）
是相同的您可以使用gapi.client.youtube.channels.list调用Javascript中的频道列表端点，方法与调用播放列表插入API的方式相同。
然后使用播放列表您可以将视频插入另一个播放列表而不是稍后观看。
在以下代码中，您会找到3个按钮，可将不同的视频添加到Watch Later播放列表，Like播放列表＆amp; Favorite播放列表
Here是一个包含source code（如下所示）的实时演示
Here是一个小提琴。替换您的客户端ID并在开发人员控制台中添加为授权JavaScript源：https://fiddle.jshell.net
<!doctype html>
<html>
<head>
<title>Add to multiple playlists</title>
</head>
<body>
<input type="submit" data-youtube-video-id="EH3gqI2NAiE" data-type="WL" value="Add to Watch Later playlist" class="yt_add_to_playlist" />
<input type="submit" data-youtube-video-id="0EMmKIIF-z" data-type="likes" value="Add to Like playlist" class="yt_add_to_playlist" />
<input type="submit" data-youtube-video-id="T4ZE2KtoFzs" data-type="favorites" value="Add to Favorite playlist" class="yt_add_to_playlist" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
var OAUTH2_CLIENT_ID = '28993181493-c9o6hdll3di0ssvebfd4atf13edqfu9g.apps.googleusercontent.com';
var OAUTH2_SCOPES = [
'https://www.googleapis.com/auth/youtube'
];
var init = false;
var button = null;
googleApiClientReady = function() {
gapi.auth.init(function() {
window.setTimeout(checkAuth, 1);
});
}
function checkAuth() {
gapi.auth.authorize({
client_id: OAUTH2_CLIENT_ID,
scope: OAUTH2_SCOPES,
immediate: true
}, handleAuthResult);
}
// Handle the result of a gapi.auth.authorize() call.
function handleAuthResult(authResult) {
jQuery('.yt_add_to_playlist').off('click');
jQuery('.yt_add_to_playlist').click(function(e) {
button = this;
if (authResult && !authResult.error) {
addToPlaylist($(this).attr("data-youtube-video-id"), $(this).attr("data-type"));
} else {
init = true;
gapi.auth.authorize({
client_id: OAUTH2_CLIENT_ID,
scope: OAUTH2_SCOPES,
immediate: false
}, handleAuthResult);
}
return false;
});
if (authResult && !authResult.error) {
// Authorization was successful. Hide authorization prompts and show
// content that should be visible after authorization succeeds.
jQuery('.pre-auth').hide();
jQuery('.post-auth').show();
loadAPIClientInterfaces();
jQuery('#add_to_wl').click(function(e) {
button = this;
addToPlaylist($(this).attr("data-youtube-video-id"), $(this).attr("data-type"));
});
}
}
function loadAPIClientInterfaces() {
gapi.client.load('youtube', 'v3', function() {
if (init) {
init = false;
addToPlaylist($(button).attr("data-youtube-video-id"), $(button).attr("data-type"));
}
});
}
function addToPlaylist(videoId, playlistType) {
console.log("add to playlist type : " + playlistType);
if (playlistType != "WL" && playlistType != "HL") {
var request = gapi.client.youtube.channels.list({
mine: true,
part: 'contentDetails'
});
request.execute(function(response) {
var playlistId = response.result.items[0].contentDetails.relatedPlaylists[playlistType];
if (typeof playlistId != 'undefined') {
console.log("found playlist id : " + playlistId);
insertToPlaylist(videoId, playlistId);
} else {
console.log("playlist not found");
}
});
} else {
insertToPlaylist(videoId, playlistType);
}
}
function insertToPlaylist(videoId, playlistId) {
var details = {
videoId: videoId,
kind: 'youtube#video'
};
var request = gapi.client.youtube.playlistItems.insert({
part: 'snippet',
resource: {
snippet: {
playlistId: playlistId,
resourceId: details
}
}
});
request.execute(function(response) {
console.log(response);
if (!response.code) {
$(button).val('Video added');
} else if (response.code == 409) {
$(button).val('Already added');
} else if (response.code == 404) {
$(button).val('Video not found');
} else {
$(button).val('Error: Try again');
}
});
}
</script>
<script src="https://apis.google.com/js/client.js?onload=googleApiClientReady"></script>
</body>
</html>
将OAUTH2_CLIENT_ID替换为您自己的客户ID
在API响应中，如果未找到视频（404），则会检查状态代码。如果视频已在播放列表中，则会返回409状态代码，但仅用于观看以后的播放列表（将现有视频添加到喜欢/喜欢的播放列表中不会改变任何内容）
与以前相同，基于google-api php sample：
安装google-api客户端：
composer require google/apiclient:~2.0
php脚本multi-playlist.php：
<?php
/**
* Library Requirements
*
* 1. Install composer (https://getcomposer.org)
* 2. On the command line, change to this directory (api-samples/php)
* 3. Require the google/apiclient library
* $ composer require google/apiclient:~2.0
*/
if (!file_exists(__DIR__ . '/vendor/autoload.php')) {
throw new \Exception('please run "composer require google/apiclient:~2.0" in "' . __DIR__ .'"');
}
require_once __DIR__ . '/vendor/autoload.php';
session_start();
$response = "";
/*
* You can acquire an OAuth 2.0 client ID and client secret from the
* {{ Google Cloud Console }} <{{ https://cloud.google.com/console }}>
* For more information about using OAuth 2.0 to access Google APIs, please see:
* <https://developers.google.com/youtube/v3/guides/authentication>
* Please ensure that you have enabled the YouTube Data API for your project.
*/
$OAUTH2_CLIENT_ID = 'YOUR_CLIENT_ID';
$OAUTH2_CLIENT_SECRET = 'YOUR_CLIENT_SECRET';
$client = new Google_Client();
$client->setClientId($OAUTH2_CLIENT_ID);
$client->setClientSecret($OAUTH2_CLIENT_SECRET);
$client->setScopes('https://www.googleapis.com/auth/youtube');
$redirect = filter_var('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'],
FILTER_SANITIZE_URL);
$client->setRedirectUri($redirect);
// Define an object that will be used to make all API requests.
$youtube = new Google_Service_YouTube($client);
// Check if an auth token exists for the required scopes
$tokenSessionKey = 'token-' . $client->prepareScopes();
if (isset($_GET['code'])) {
if (strval($_SESSION['state']) !== strval($_GET['state'])) {
die('The session state did not match.');
}
$client->authenticate($_GET['code']);
$_SESSION[$tokenSessionKey] = $client->getAccessToken();
header('Location: ' . $redirect);
}
if (isset($_SESSION[$tokenSessionKey])) {
$client->setAccessToken($_SESSION[$tokenSessionKey]);
}
// Check to ensure that the access token was successfully acquired.
if ($client->getAccessToken()) {
try {
$videoId = "";
if (isset($_GET['video'])){
$videoId = $_GET['video'];
}
else if(isset($_SESSION['video'])){
$videoId = $_SESSION['video'];
}
if (isset($_GET['action'])){
$action = $_GET['action'];
}
else if(isset($_SESSION['action'])){
$action = $_SESSION['action'];
}
if(isset($videoId) && isset($action) && !isset($_GET['state'])) {
file_put_contents('php://stderr', print_r("adding video to watch later playlist " . $videoId . "\n", TRUE));
if ($action == "Add to Watch Later playlist") {
$playlistId = "WL";
}
else {
$listResponse = $youtube->channels->listChannels("contentDetails", array(
'mine' => true
));
if (!empty($listResponse)) {
if ($action == "Add to Like playlist"){
$playlistId = $listResponse['items'][0]['contentDetails']['relatedPlaylists']['likes'];
}
else if ($action == "Add to Favorite playlist"){
$playlistId = $listResponse['items'][0]['contentDetails']['relatedPlaylists']['favorites'];
}
}
}
if (isset($playlistId)){
// 5. Add a video to the playlist. First, define the resource being added
// to the playlist by setting its video ID and kind.
$resourceId = new Google_Service_YouTube_ResourceId();
$resourceId->setVideoId($videoId);
$resourceId->setKind('youtube#video');
// Then define a snippet for the playlist item. Set the playlist item's
// title if you want to display a different value than the title of the
// video being added. Add the resource ID and the playlist ID retrieved
// in step 4 to the snippet as well.
$playlistItemSnippet = new Google_Service_YouTube_PlaylistItemSnippet();
$playlistItemSnippet->setTitle('First video in the test playlist');
$playlistItemSnippet->setPlaylistId($playlistId);
$playlistItemSnippet->setResourceId($resourceId);
// Finally, create a playlistItem resource and add the snippet to the
// resource, then call the playlistItems.insert method to add the playlist
// item.
$playlistItem = new Google_Service_YouTube_PlaylistItem();
$playlistItem->setSnippet($playlistItemSnippet);
$playlistItemResponse = $youtube->playlistItems->insert(
'snippet,contentDetails', $playlistItem, array());
$response = json_encode($playlistItem);
}
else{
$response = "no playlist selected";
}
$_SESSION['video'] = "";
$_SESSION["action"] = "";
}
else{
file_put_contents('php://stderr', print_r("no video was specified", TRUE));
}
} catch (Google_Service_Exception $e) {
$response = htmlspecialchars($e->getMessage());
} catch (Google_Exception $e) {
$response = htmlspecialchars($e->getMessage());
}
$_SESSION[$tokenSessionKey] = $client->getAccessToken();
} else {
if(isset($_GET['video'])){
$_SESSION["video"] = $_GET['video'];
$_SESSION["action"] = $_GET['action'];
// If the user hasn't authorized the app, initiate the OAuth flow
$state = mt_rand();
$client->setState($state);
$_SESSION['state'] = $state;
$authUrl = $client->createAuthUrl();
header('Location: ' . $authUrl);
}
}
?>
<!doctype html>
<html>
<head>
<title>Add to playlists</title>
</head>
<body>
<div>
<form id="form" action="multi-playlist.php"">
<input type="hidden" name="video" value="EH3gqI2NAiE">
<input name="action" type="submit" value="Add to Watch Later playlist" />
<input name="action" type="submit" value="Add to Like playlist" />
<input name="action" type="submit" value="Add to Favorite playlist" />
</form>
<div>
<?php echo $response ?>
</div>
</div>
</body>
</html>
对于此PHP版本，请注意除了当前会话$_SESSION["video"]中的视频ID之外，目标操作还存储在$_SESSION["action"]中，以便能够确定要使用的播放列表。使用$youtube->channels->listChannels通道列表端点检索播放列表。
请注意，视频可能需要一段时间才能显示在播放列表中（有时几秒钟）