fix bug where a chapter edit would remove its lessons and examples

Author: ceolinwill

src/components/ChapterCreate.tsx

@@ -36,7 +36,9 @@ const ChapterCreate = ({ topicId }: ChapterCreateProps) => {
       createdAt: timestamp,
       createdBy: profile,
       createdById: user.uid,
+      examples: [],
       language: appLanguage,
+      lessons: [],
       likes: 0,
       topics: [topicId],
       updatedAt: timestamp,

src/components/ChapterForm.tsx

@@ -53,9 +53,7 @@ const ChapterForm = ({
       valid={valid}
       saving={saving}
       onDelete={onDelete}
-      onSubmit={() =>
-        onSubmit({ description, examples: [], lessons: [], title })
-      }
+      onSubmit={() => onSubmit({ description, title })}
     >
       <Grid container spacing={2}>
         <Grid item xs={12}>

src/models/chapter.ts

@@ -15,12 +15,13 @@ export namespace Chapter {
 
   export interface EditableFields {
     description: string;
-    examples: string[];
-    lessons: string[];
     title: string;
   }
 
-  interface Fields extends EditableFields {}
+  interface Fields extends EditableFields {
+    examples: string[];
+    lessons: string[];
+  }
 
   /**
    * Required fields for creating a chapter.

src/models/topic.ts

@@ -8,12 +8,12 @@ import { SearchIndex } from './search';
  */
 export namespace Topic {
   interface EditableFields {
-    chapters: string[];
     description: string;
     photo: string | null;
   }
 
   interface Fields extends EditableFields {
+    chapters: string[];
     posts: number;
     title: string;
   }