Cannot apply $addtoset to non-array field
WebDec 21, 2024 · usersEnrolled : [{ iscourseenrolled : { type:Boolean, default: false }, userId: {type: String }, trackTime: {type:String} }], WebFeb 15, 2013 · 1 $addToSet will create the arr field for a doc where it doesn't exist, so what's probably happening is that you have a doc where arr exists but isn't an array. – …
Cannot apply $addtoset to non-array field
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WebMongoDB Documentation WebBut when I try $addToSet to array, I get MongoDB cannot apply $addToSet modifier to non-array. 'click a.yes': function (event) { if (Meteor.user ()) { event.preventDefault (); var postId = Session.get ('selected_post'); Posts.update (postId, {$addToSet: {users: Meteor.user ()}}); Posts.update (postId, {$inc: {'score' : 1}});
WebSep 4, 2015 · But did you read the part about "quoting" and apply it? I think you have not done that. Also, there is zero need to "cast" with Mongoose. If the field type in the schema is ObjectId then mongoose will do the "casting" for you. – WebJul 11, 2015 · There is in fact "no order" to the execution of different update operators, so their is no guarantee that the $addToSet occurs before the $push. In fact they are likely acting in parallel, which is why the error and that this is not allowed. The answer of course is "two" update statements.
Web您选择 $addToSet 是因为您希望项目是唯一的，但实际上您确实希望它们仅由“a”唯一。 所以 $addToset 不会这样做，而您需要“测试”存在的元素。 但这里真正的问题是不可能同 … WebJul 2, 2011 · It is the server that requires the element value to be an array (and BSON null is not an array). You could also use the [BsonIgnoreIfNull] attribute to prevent an
WebMar 15, 2016 · If you want to access a ForeignKey field from an instance you can not access it directly as you did here {% for user in current_folder.company.members.all %} ForeignKey field is a company so it should be current_folder.company_set () Note: ForeignKey returns a set of objects. In your case a set of companies. That's why it …
WebDec 19, 2024 · Can we able to use "_id" : ObjectId ("4faaba123412d654fe83hg876") instead of user_id from the above example. Because i am getting exception like this "Cannot … rounding rateable valuesWebMay 31, 2011 · 1 Answer. Sorted by: 2. If you want add setting item to the Settings [] array of Application collection you should use ToBsonDocument () extention method from MongoDB.Bson namespace: var update = Update.AddToSet ("Settings", setting.ToBsonDocument ()); You no need create BsonArray. Share. Improve this … rounding rap lyricsWebMar 19, 2015 · The logic cannot work as a new document will be created whenever the array element was not found, rather than append to the array element like you want. … stratus tower seattleWebJun 1, 2024 · Is the specified value is an array in the $addToSet operator, then this operator will append the whole array as a single item. Or if you want to add items separately in the array, then use $each modifier. This operator does not work with non-array fields. If the value is a document, then MongoDB checks if the document exists or not in the array. rounding recoveryWebMay 17, 2024 · And that is the problem. Basically, when the arrayfilter named grp meets a null object, it raises an error because it can't apply on it. So the solution to make the request work was to make sure every document in the collection had this group array initialized (even if it's empty, it doesn't matter). Once I did this there was no problem anymore. rounding ratio calculatorWebMar 26, 2014 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams stratus torontoWeb3. First of all, get rid of this code as you do not need it and you are actually defining a "static" signature that you are not even using: userSchema.statics.findAndModify = function (query, sort, doc, options, callback) { return this.collection.findAndModify (query, sort, doc, options, callback); } You should have a declaration for your User ... rounding recording sheet