I am new to Play Framework, and attempting to build a Todo-list from this manual.
When I try to run the application I get the error:
Compilation Error
error: method render in class index cannot be applied to given types;
My code is (the relevant parts):
MainController.java:
final static Form<Task> taskForm = Form.form(Task.class);
public static Result tasks() {
return ok(
views.html.index.render(Task.all(), taskForm)
);
}
index.sacala.html:
@(tasks: List[Models.Task], taskForm: Form[Models.Task])
I looked around, the closest thread I found was this one, but I was not able to resolve the issue using it (might be due to lack of understanding of the environment / framework...).
One last thing that is worth mentioning:
If I change 'index.sacala.html' to be parameter-less (and change the 'MainController' accordingly, everything works perfectly.
Would appreciate any thoughts about resolving this compilation error.
EDIT:
The Task.all() code is:
public static List<Task> all() {
return new ArrayList<Task>();
}
Most probably your package is models NOT Models isn't it?
BTW this package is autoimported so you can just use:
@(tasks: List[Task], taskForm: Form[Task])
Hm, changes... Actually log in the console says everything
[error] /www/play20apps/testing/Todo-List/app/controllers/MainController.java:24: error: method render in class index cannot be applied to given types;
[error] return ok(views.html.index.render(Task.all(), taskForm));
[error] ^
[error] required: List<Task>,play.api.data.Form<Task>
[error] found: List<Task>,play.data.Form<Task>
[error] reason: actual argument play.data.Form<Task> cannot be converted to play.api.data.Form<Task> by method invocation conversion
[error] 1 error
especially these lines:
[error] required: List<Task>,play.api.data.Form<Task>
[error] found: List<Task>,play.data.Form<Task>
TBH I didn't ever test the Activator but it looks that imports play.api.data.Form into views, which is incorrect for Java controllers. solution is full qualified path for Form:
@(tasks: java.util.List[Task], taskForm: play.data.Form[Task])
As mentioned in comment *.api.* imports are for Scala and normal are for Java, that's the rule of the thumb in Play 2.+
PostScriptum: Just realized that in your build.sbt you have play.Project.playScalaSettings and actually it should be play.Project.playJavaSettings, this change fixes your problems with Activator.
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