Hi, I managed reading and writing my model (e.g. Person objects) into MongoDB with MongoTalk. But I did use replace:with: e.g. "get person from db with OID - this is a dictionary with ALL OLD fields of the person as stored in the database" thePersonFromDatabaseDict := (self personsCollection queryOne: [ :query | query where: {('_id' -> aPerson mongoObjectId )} asDictionary ]) theNewDict := aPerson mongoDataDict "dictionary with the NEW fields for this person" self personsCollection replace: thePersonFromDatabaseDict with: theNewDict Which means I replace the whole person object in the database with my current instance data in the image. Also it is much overhead creating the dictionary with all fields from the person in the image. This is not ok, when I want to set e.g. one field in the person object. For this reason I want to use the "Modifier operators", e.g. $set http://docs.mongodb.org/manual/applications/update/
From there: "Update a Field in a Document. Use $set to update a value of a field. The following operation queries the bios collection for the first document that has an _id field equal to 1 and sets the value of the field middle, in the subdocument name, to Warner:
db.bios.update( { _id: 1 }, { $set: { 'name.middle': 'Warner' }, } ) *I did not find how to use this in MongoTalk. I can not imagine that this functionality is missing but I don't know how to create this from Mongotalk. Unfortunately there is no documentation and as far as I understand there are no test cases for update modifiers.* So, can anyone give me a code snippet how to use update modifiers in Mongotalk? Sabine -- View this message in context: http://forum.world.st/does-MongoTalk-implement-modifier-operators-e-g-set-tp... Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.