2011-05-29 86 views
1

db.tasks.find({user:「saturngod」});MongoDB查詢更新

是返回

{ "_id" : ObjectId("4de20ef97065cc77c80541fd"), 
"todo" : [ 
    { 
     "id" : 1, 
     "desc" : "hi", 
     "done" : 0 
    }, 
    { 
     "id" : 2, 
     "desc" : "hello", 
     "done" : 0 
    } 
], "user" : "saturngod" } 

我想更新DONE = 1時todo.id = 1

所以,我寫

>db.tasks.update({'todo.id':1},{"$set":{todo:{done:1}}}); 

我失去了所有的待辦事項和只設置完成:1

db.tasks.find();

{ "_id" : ObjectId("4de20ef97065cc77c80541fd"), "todo" : { "done" : 1 }, "user" : "saturngod" } 

如何更新的價值?我想這樣做

{ "_id" : ObjectId("4de20ef97065cc77c80541fd"), 
"todo" : [ 
    { 
     "id" : 1, 
     "desc" : "hi", 
     "done" : 1 
    }, 
    { 
     "id" : 2, 
     "desc" : "hello", 
     "done" : 0 
    } 
], "user" : "saturngod" } 

回答

5

明白了。

db.tasks.update({'todo.id':1},{"$set":{"todo.$.done":1}});