playframework

问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: JPA OneToOne and ManyToMany between two entities I've searched for a solution to no avail. My question is I have two entities "Employee" and "Department" Many Employees belongs to One Department And One Department is headed by One Employee. Am getting errors anytime introduce both the @OneToOne and @OneToMany. This is the code public class Department { @Required public String deptName; @OneToMany(mappedBy="dept"

问题 I'm using play 2.2.0 Reads for validating incoming request in my application. I'm trying to implement a very simple thing with json API. I have a json like this: { "field1": "some value", "field2": "some another value" } I already have Reads that checks for other stuff like minimal length case class SomeObject(field1: String, field2: String) implicit val someObjectReads = ( (__ \ "field1").read(minLength[String](3)) ~ (__ \ "field2").read(minLength[String](3)) )(SomeObject) I want to create a

问题 I'm using play 2.2.0 Reads for validating incoming request in my application. I'm trying to implement a very simple thing with json API. I have a json like this: { "field1": "some value", "field2": "some another value" } I already have Reads that checks for other stuff like minimal length case class SomeObject(field1: String, field2: String) implicit val someObjectReads = ( (__ \ "field1").read(minLength[String](3)) ~ (__ \ "field2").read(minLength[String](3)) )(SomeObject) I want to create a

问题 I'm using play 2.2.0 Reads for validating incoming request in my application. I'm trying to implement a very simple thing with json API. I have a json like this: { "field1": "some value", "field2": "some another value" } I already have Reads that checks for other stuff like minimal length case class SomeObject(field1: String, field2: String) implicit val someObjectReads = ( (__ \ "field1").read(minLength[String](3)) ~ (__ \ "field2").read(minLength[String](3)) )(SomeObject) I want to create a

问题 consider i have a json as following: { "a": "aa", "b": "bb", "c": "cc", "d": "dd", // unknown in advance "e": { //unknown in advance "aa": "aa" } } i know for sure that the json will contain a,b,c but i've no idea what other fields this json may contain. i want to serialize this JSON into a case class containing a,b,c but on the other hand not to lose the other fields (save them in a map so the class will be deserialized to the same json as received). ideas? 回答1: One option is to capture the

问题 I'm using "scalatestplus-play" % "5.1.0" , and I'm trying to bring MockitoSugar to my class like I did in earlier projects: class MyTestSpec extends AnyFreeSpec with MockitoSugar so I can use the mock[MyClass] function and now it docent exists, can't find in the documentation something else. in my earlier projects I used "scalatestplus-play" % "4.0.3" , I'm sure there is a different way now but can't find what it is 回答1: First option you have, is to use scalatestplus-mockito, where you can

问题 I have a module class with the following signature: class SilhouetteModule extends AbstractModule with ScalaModule { I would like to inject configuration: class SilhouetteModule @Inject() (configuration: Configuration) extends AbstractModule with ScalaModule { But it fails with the following error. No valid constructors Module [modules.SilhouetteModule] cannot be instantiated. The Play documentation mentions that In most cases, if you need to access Configuration when you create a component,

问题 I am using play Reads validation helpers i want to show some custom message in case of json exception eg:length is minimum then specified or the given email is not valid , i knnow play displays the error message like this error.minLength but i want to display a reasonable message like please enter the character greater then 1 (or something ) here is my code case class DirectUserSignUpValidation(firstName: String, lastName: String, email: String, password: String) extends Serializable object

问题 According to the Play documentation on WebSockets the standard way to establish a WebSocket is to use ActorFlow.actorRef , which takes a function returning the Props of my actor. My goal is to get a reference to this underlying ActorRef , for instance in order to send a first message or to pass the ActorRef to another actor's constructor. In terms of the minimal example from the documentation, I'm trying to achieve this: class WebSocketController @Inject() (implicit system: ActorSystem,

问题 According to the Play documentation on WebSockets the standard way to establish a WebSocket is to use ActorFlow.actorRef , which takes a function returning the Props of my actor. My goal is to get a reference to this underlying ActorRef , for instance in order to send a first message or to pass the ActorRef to another actor's constructor. In terms of the minimal example from the documentation, I'm trying to achieve this: class WebSocketController @Inject() (implicit system: ActorSystem,