feat: include slug and path in result

Author: fgnass

packages/decap-cms-core/src/components/Editor/EditorPreviewPane/EditorPreviewPane.js

@@ -222,17 +222,18 @@ export class PreviewPane extends React.Component {
    * This function exists entirely to expose collections from outside of this entry
    *
    */
-  getCollection = async (collectionName, slug) => {
+  getCollection = async (collectionName, slugToLoad) => {
     const { state } = this.props;
     const selectedCollection = state.collections.get(collectionName);
 
-    if (typeof slug === 'undefined') {
+    if (typeof slugToLoad === 'undefined') {
       const entries = await getAllEntries(state, selectedCollection);
-      return entries.map(entry => Map().set('data', entry.data));
+
+      return entries.map(({ data, slug, path }) => Map({ data, slug, path }));
     }
 
-    const entry = await tryLoadEntry(state, selectedCollection, slug);
-    return Map().set('data', entry.data);
+    const { data, slug, path } = await tryLoadEntry(state, selectedCollection, slugToLoad);
+    return Map({ data, slug, path });
   };
 
   render() {