[EditModel] Only show access message on add

The created using public access could be confusing on editing an
object. The sharing notification is therefore only shown when adding
an item that has sharing.

Closes #124

src/EditModel/EditModel.component.js

@@ -159,6 +159,10 @@ export default React.createClass({
         };
     },
 
+    isAddOperation() {
+        return this.props.modelId === 'add';
+    },
+
     componentWillMount() {
         const modelType = this.props.modelType;
 
@@ -175,7 +179,7 @@ export default React.createClass({
                             .map(fieldConfig => {
                                 fieldConfig.fieldOptions.model = modelToEdit;
 
-                                if (this.props.modelId !== 'add' && disabledOnEdit.for(modelType).indexOf(fieldConfig.name) !== -1) {
+                                if (!this.isAddOperation() && disabledOnEdit.for(modelType).indexOf(fieldConfig.name) !== -1) {
                                     fieldConfig.props.disabled = true;
                                 }
 
@@ -248,6 +252,14 @@ export default React.createClass({
         return this.getTranslation(camelCaseToUnderscores(propertyName));
     },
 
+    renderSharingNotification(formPaperStyle) {
+        if (this.isAddOperation()) {
+            return (<SharingNotification style={formPaperStyle} modelType={this.props.modelType} />);
+        }
+
+        return null;
+    },
+
     render() {
         const formPaperStyle = {
             width: '100%',
@@ -294,7 +306,7 @@ export default React.createClass({
                 <div style={{ display: 'flex', flexDirection: 'row', marginBottom: '2rem' }}>
                     <FormHeading>{camelCaseToUnderscores(this.props.modelType)}</FormHeading>
                 </div>
-                <SharingNotification style={formPaperStyle} modelType={this.props.modelType} />
+                {this.renderSharingNotification(formPaperStyle)}
                 {this.state.isLoading ? 'Loading data...' : renderForm()}
             </div>
         );