How to bind a array form field with Playframework scala

binding, forms, playframework, playframework-2.0, scala

Solution

Try:

<label for="features_1">
  <input type="checkbox" id="features_1" name="features[0]" value="4"> foo
</label>
<label for="features_2">
  <input type="checkbox" id="features_2" name="features[1]" value="8"> bar
</label>

EDIT

Or:

myForm.bind(myForm.bindFromRequest.data + ("features"-> request.body.asFormUrlEncoded.get("features[]"))).fold(
...
)

This will bind all other fields from request directly, and then when it comes to features, they are going to be added manually. If you don't need to bind more data then just write:

myForm.bind("features"-> request.body.asFormUrlEncoded.get("features[]")).fold(
...
)

Problem

The form I have to handle has something like this: ``` <label for="features_1"> <input type="checkbox" id="features_1" name="features[]" value="4"> foo </label> <label for="features_2"> <input type="checkbox" id="features_2" name="features[]" value="8"> bar </label> ``` I can get the array like this ``` request.body.asFormUrlEncoded.get("features[]") ``` which gives me when both items are selected `List(4, 8)` But when I try to bind this in a form ``` case class MyFeatures(features: Seq[Long]) val myForm = Form ( mapping( "features" -> seq(longNumber) )(MyFeatures.apply)(MyFeatures.unapply) ) ``` I always get an empty sequence, same with "features[]" EDIT The above example actually works, the issue was somewhere else. Upon binding play translates the features to feature[0]=4 and features[1]=8 which is then handled correctly in the seq(...) or list(...) mappings

Original source