如何求解错误[] IS不为类型定义的object＆＃x27;
静态void liketweet（字符串CurrentUserid，Tweet Tweet）{ DocumentReference TweetDocProfile = tweetsref.doc（tweet.authorid）.collection（'usertweets'）。doc（tweet.id）; TweetDocProfile.get（）。然后（（doc）{ int likes = doc.data（）['likes']; //错误该运算符未针对类型的对象定义， TweetDocProfile.update（{'likes'：likes + 1}）; }）;
DocumentReference tweetDocFeed =
feedRefs.doc(currentUserId).collection('userFeed').doc(tweet.id);
tweetDocFeed.get().then((doc) {
if (doc.exists) {
int likes = doc.data()['likes'];
tweetDocFeed.update({'likes': likes + 1});
}
});
likesRef.doc(tweet.id).collection('tweetLikes').doc(currentUserId).set({});
addActivity(currentUserId, tweet, false, null);
}
static void linketweet（字符串CurrentUserid，Tweet Tweet）{ DocumentReference TweetDocProfile = tweetsref.doc（tweet.authorid）.collection（'usertweets'）。doc（tweet.id）; TweetDocProfile.get（）。然后（（doc）{ int likes = doc.data（）['likes']; TweetDocProfile.update（{'likes'：likes -1}）; }）;
DocumentReference tweetDocFeed =
feedRefs.doc(currentUserId).collection('userFeed').doc(tweet.id);
tweetDocFeed.get().then((doc) {
if (doc.exists) {
int likes = doc.data()['likes'];
tweetDocFeed.update({'likes': likes - 1});
}
});
likesRef
.doc(tweet.id)
.collection('tweetLikes')
.doc(currentUserId)
.get()
.then((doc) => doc.reference.delete());
}
static void likeTweet(String currentUserId, Tweet tweet) {
DocumentReference tweetDocProfile =
tweetsRef.doc(tweet.authorId).collection('userTweets').doc(tweet.id);
tweetDocProfile.get().then((doc) {
int likes = doc.data()['likes']; //error the operator isn't defined for the type 'object,
tweetDocProfile.update({'likes': likes + 1});
});
DocumentReference tweetDocFeed =
feedRefs.doc(currentUserId).collection('userFeed').doc(tweet.id);
tweetDocFeed.get().then((doc) {
if (doc.exists) {
int likes = doc.data()['likes'];
tweetDocFeed.update({'likes': likes + 1});
}
});
likesRef.doc(tweet.id).collection('tweetLikes').doc(currentUserId).set({});
addActivity(currentUserId, tweet, false, null);
}
static void unlikeTweet(String currentUserId, Tweet tweet) {
DocumentReference tweetDocProfile =
tweetsRef.doc(tweet.authorId).collection('userTweets').doc(tweet.id);
tweetDocProfile.get().then((doc) {
int likes = doc.data()['likes'];
tweetDocProfile.update({'likes': likes - 1});
});
DocumentReference tweetDocFeed =
feedRefs.doc(currentUserId).collection('userFeed').doc(tweet.id);
tweetDocFeed.get().then((doc) {
if (doc.exists) {
int likes = doc.data()['likes'];
tweetDocFeed.update({'likes': likes - 1});
}
});
likesRef
.doc(tweet.id)
.collection('tweetLikes')
.doc(currentUserId)
.get()
.then((doc) => doc.reference.delete());
}
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使用此而不是只需要一个键：
如果您想要整个对象，则需要将其施放为Map＆lt; string，dynamic＆gt;
Use this instead of you want only one key:
If you want the entire object, you need to cast it as Map<String, dynamic>