Create a default index section if there is none

src/front_matter.rs

@@ -150,7 +150,7 @@ impl Default for FrontMatter {
             template: None,
             paginate_by: None,
             paginate_path: None,
-            render: None,
+            render: Some(true),
             extra: None,
         }
     }

src/section.rs

@@ -131,3 +131,21 @@ impl ser::Serialize for Section {
         state.end()
     }
 }
+
+impl Default for Section {
+    /// Used to create a default index section if there is no _index.md
+    fn default() -> Section {
+        Section {
+            file_path: PathBuf::new(),
+            relative_path: "".to_string(),
+            parent_path: PathBuf::new(),
+            components: vec![],
+            path: "".to_string(),
+            permalink: "".to_string(),
+            meta: FrontMatter::default(),
+            pages: vec![],
+            ignored_pages: vec![],
+            subsections: vec![],
+        }
+    }
+}

src/site.rs

@@ -171,6 +171,12 @@ impl Site {
                 self.add_page(path)?;
             }
         }
+        // Insert a default index section so we don't need to create a _index.md to render
+        // the index page
+        let index_path = self.base_path.join("content");
+        if !self.sections.contains_key(&index_path) {
+            self.sections.insert(index_path, Section::default());
+        }
 
         // A map of all .md files (section and pages) and their permalink
         // We need that if there are relative links in the content that need to be resolved
@@ -234,8 +240,9 @@ impl Site {
 
         let mut grandparent_paths = HashMap::new();
         for section in self.sections.values() {
-            let grand_parent = section.parent_path.parent().unwrap().to_path_buf();
+            if let Some(grand_parent) = section.parent_path.parent() {
-            grandparent_paths.entry(grand_parent).or_insert_with(|| vec![]).push(section.clone());
+                grandparent_paths.entry(grand_parent.to_path_buf()).or_insert_with(|| vec![]).push(section.clone());
+            }
         }
 
         for (parent_path, section) in &mut self.sections {