绑定模型以使用Spring Web Flow查看

Question

i've trobule with binding model to form view, im getting error

Property or field 'city' cannot be found on null

I'm trying to bind String place.location.city to my view

<form role="form" th:action="${flowExecutionUrl}" th:object="${place}" method="post">
 <input class="form-control" th:field="*{location.city}"/>
<!-- ... -->
</form>

This is my xml of subflow where i'm getting error

<view-state id="mapView" view="/places/add/location" model="place">
    <transition on="locationSelected" to="locationReady"/>
</view-state>

<end-state id="locationReady">
</end-state>

Answer 1

Error msg is telling you that either Location or Place is null.

If I had to guess you probably did not initialize the model Place inside your flow xml before entering the view-state mapView

<set name="flowScope.place" value ="new your.class.path.model.Place()"/>

Though you will probably want to use a Factory Method to init Place (so you can also init Location in 1 call)