feat(index-fields): differentiate nested/non-nested collections

Author: demshy

packages/decap-cms-core/src/components/Collection/Entries/EntryCard.js

@@ -148,7 +148,7 @@ function mapStateToProps(state, ownProps) {
   const isLoadingAsset = selectIsLoadingAsset(state.medias);
 
   const indexFileConfig = collection.get('index_file');
-  const fileSlug = entry.get('slug')?.split('/').pop();
+  const fileSlug = entry.get('slug');
 
   return {
     summary,

packages/decap-cms-core/src/reducers/collections.ts

@@ -43,8 +43,8 @@ function collections(state = defaultState, action: ConfigAction) {
   }
 }
 
-function isIndexFile(filePath: string, pattern: string) {
-  const fileSlug = filePath?.split('/').pop();
+function isIndexFile(filePath: string, pattern: string, nested: boolean) {
+  const fileSlug = nested ? filePath?.split('/').pop() : filePath;
   return fileSlug && new RegExp(pattern).test(fileSlug);
 }
 
@@ -64,7 +64,7 @@ const selectors = {
       const indexFileConfig = collection.get('index_file');
       if (
         indexFileConfig &&
-        isIndexFile(slug, indexFileConfig.get('pattern')) &&
+        isIndexFile(slug, indexFileConfig.get('pattern'), !!collection.get('nested')) &&
         indexFileConfig.has('fields')
       ) {
         return indexFileConfig.get('fields');