Fixed bug from Issue 905, with checkbox defaultChecked not working properly

Author: maludwig

src/actions/model-actions.js

@@ -96,7 +96,11 @@ export function createModelActions(s = defaultStrategies) {
       return change(model, multiValue);
     }
 
-    return change(model, !currentValue);
+    if (typeof value === 'undefined') {
+      return change(model, !currentValue);
+    } else {
+      return change(model, value);
+    }
   };
 
   const check = (model, value) => (dispatch, getState) => {

src/constants/control-props-map.js

@@ -57,9 +57,7 @@ const controlPropsMap = {
   },
   checkbox: {
     ...standardPropsMap,
-    checked: (props) => (props.defaultChecked
-      ? props.checked
-      : isChecked(props)),
+    checked: isChecked,
   },
   radio: {
     ...standardPropsMap,