Merge pull request #1455 from SamueleFurnari/fix_image_path

Fix image path, DynamicForm

Author: joaojmendes

src/controls/dynamicForm/DynamicForm.tsx

@@ -482,8 +482,8 @@ export class DynamicForm extends React.Component<IDynamicFormProps, IDynamicForm
             principalType = field.SchemaXml.split('UserSelectionMode="')[1];
             principalType = principalType.substring(0, principalType.indexOf('"'));
           } else if (fieldType === "Thumbnail") {
-            if (defaultValue !== null) {
-              defaultValue = this.webURL.split('/sites/')[0] + JSON.parse(defaultValue).serverRelativeUrl;
+            if (defaultValue) {
+              defaultValue = JSON.parse(defaultValue).serverRelativeUrl;
             }
           } else if (fieldType === "User") {
             if (item !== null) {

src/controls/dynamicForm/dynamicField/DynamicField.tsx

@@ -522,11 +522,11 @@ export class DynamicField extends React.Component<IDynamicFieldProps, IDynamicFi
     } = this.props;
 
     this.setState({
-      changedValue: undefined
+      changedValue: ''
     });
 
     if (onChanged) {
-      onChanged(columnInternalName, undefined, undefined);
+      onChanged(columnInternalName, '', undefined);
     }
   }