playframework 2.0 - Overzealous @Constraints.Required enforcement on update in Play 2.0 -

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i'm trying make play stop complaining when updates don't specify required fields in json requests. required fields have values don't want change, shouldn't have specify them again.

stripped down model:

@entity public class run extends model {     public enum status { running, ok, warnings, errors, failed, certified };      @id     public long id;      @constraints.required     @manytoone(cascade = cascadetype.refresh)     public task task;      @jodadatetime     @type(type="org.joda.time.contrib.hibernate.persistentdatetime")     public datetime started;     @jodadatetime     @type(type="org.joda.time.contrib.hibernate.persistentdatetime")     public datetime completed;      @enumerated(enumtype.string)     @column(columndefinition="enum('ok','warnings','errors','running','failed','certified')")     public status result;  }

based on 1 of sample applications initial controller action was:

@transactional @bodyparser.of(play.mvc.bodyparser.json.class) public static result update(long run_id) {     form<run> runform = form(run.class).bindfromrequest();     if(runform.haserrors()) {         return badrequest(runform.errorsasjson());     }     runform.get().update(run_id);      objectnode result = json.newobject();     result.put("id", run_id);      return ok(result); }

but if send { completed: '1341268791000', result: 'errors } complains task required.

then thought maybe use form.fill fix it:

@transactional @bodyparser.of(play.mvc.bodyparser.json.class) public static result update(long run_id) {     run run = run.find.byid(run_id);     form<run> runform = form(run.class).fill(run).bind(request().body().asjson());      if (runform.haserrors())         return badrequest(runform.errorsasjson());      runform.get().update(run_id);      objectnode result = json.newobject();     result.put("id", run_id);      return ok(result); }

but didn't either. what's secret?

you don't need use form insert/update field, can update field 'manually' (simplified sample, of course in example need extract somefield json)

public static result update(long run_id) {     run run = run.find.byid(run_id);     run.somefield = form().bindfromrequest().get("somefield");     run.update();     return ok(); }

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