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Questions tagged [reactivemongo]

Asynchronous & Non-Blocking Scala Driver for MongoDB

508 questions
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Project a new Date into aggregation pipeline using reactivemongo

I'm trying to craft a new Date value into a projection within a reactivemongo aggregate pipeline. I have seen other examples where people create this within the mongo shell, like this: db.runCommand({ "aggregate" : "collectionName", "pipeline":…
Bilk
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Transform Enumerator[T] into List[T]

I am integrating an application using ReactiveMongo with a legacy application. As, I must maintain legacy application interfaces at some point I must block and/or transform my code into the specified interface types. I have that code distilled down…
bearrito
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ReactiveMongo : How to write macros handler to Enumeration object?

I use ReactiveMongo 0.10.0, and I have following user case class and gender Enumeration object: case class User( _id: Option[BSONObjectID] = None, name: String, gender: Option[Gender.Gender] =…
SBotirov
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Searching text in MongoDB with ReactiveMongo

I have some documents in MongoDB like the following: { "no" : "ABC123", "description": "The brown fox jumped over the lazy dog" } I want to be able to search through all such documents in the collection and return all documents which contain,…
saintlyRook
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How to convert an UUID into a MongoDB oid

Given an java.util.UUID generated like this... import java.util.UUID val uuid = UUID.randomUUID ... is it possible to convert it into a MongoDB ObjectID and preserve uniqueness? Or shall I just set _id to the UUID value? Of course, the best…
j3d
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ReactiveMongo: How to use projection

I'm trying to filter out the password field when querying a document from MongoDB with ReactiveMongo: val projection = Json.obj("password" -> 0) def find(selector: JsValue, projection: Option[JsValue]) = { val query =…
j3d
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Creating a unique index for a collection in reactivemongo

Looking at the MongoDB documentation it looks like you can ensure an index is created for a collection at application runtime using a command that looks something like this: db.myCollection.ensureIndex({'my-col': 1}, {unique: true}) I can't find…
Jordan
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How to represent a GeoJSON point in a ReactiveMongo model?

In order to do geospatial queries in MongoDB a document with a location (with a 2d or 2dsphere geospatial index) should look something like this: { _id: …, loc: { type: "Point", coordinates: [ , ] …
Nick
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Cannot add ReactiveMongo to Play-Framework

ers, I am having troubles with integrating the ReactiveMongo within the Play framework. My build.sbt libraryDependencies ++= Seq( "org.reactivemongo" %% "play2-reactivemongo" % "0.9" ) When I try to run the server with the play run command I get…
Fokko Driesprong
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Asynchronous input validators in Play2

I am using play2.1 and I need a validator which checks if a given name is already taken or not in MongoDB. I am using reactive mongo which is an asynchronous MongoDB driver, although my question doesn't depend on this library. Generally speaking, I…
Ali Salehi
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Error: "could not find implicit value for parameter readFileReader" trying to save a file using GridFS with reactivemongo

I am trying to save an attachment using reactivemongo in Play 2.1 using the following code: def upload = Action(parse.multipartFormData) { request => request.body.file("carPicture").map { picture => val filename = picture.filename val…
G A
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ReactiveMongo Pagination with Count

I am trying to implement Pagination with Reactive Mongo. def get(page: Int, pageSize: Int, filter: JsObject = Json.obj()): Future[Seq[Thing]] = { val actualPage = if(page > 1) page else 1 collection .find(filter) …
Eduardo
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Scala ReactiveMongo: Channel not found on minor internet outage

Reactive Mongo stops on minor internet outage and doesn't restore, neither play stops, just subsequent queries get these repeated exception saying connection 10/1 but channel not found. This is mentioned as GitHub issue as well, but no solution is…
Ravinder Payal
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Inherited parse method conflict in scala

I'm working through some compilation errors (in Scala / Play Framework) and one I can't resolve is a conflict error. This is the error: class Games inherits conflicting members: [error] method parse in trait BaseControllerHelpers of type =>…
jesus g_force Harris
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How do I set `skip` (offset) for reactivemongo mongodb driver?

I need to skip a number of documents (offset) from a query, and only return limit number of documents that go after. I know the following naive approach: collection.find(BSONDocument()) …
VasiliNovikov
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