fix: only return a single parent item for blog index parents/breadcrumbs (#262)

Author: argl

crates/rari-doc/src/pages/types/spa.rs

@@ -26,7 +26,7 @@ use crate::helpers::parents::parents;
 use crate::helpers::title::page_title;
 use crate::pages::json::{
     BlogIndex, BuiltPage, CommonJsonData, ItemContainer, JsonBlogPostDoc, JsonBlogPostPage,
-    JsonHomePage, JsonHomePageSPAHyData, JsonSpaPage,
+    JsonHomePage, JsonHomePageSPAHyData, JsonSpaPage, Parent,
 };
 use crate::pages::page::{Page, PageLike, PageReader};
 use crate::pages::templates::SpaBuildTemplate;
@@ -139,7 +139,15 @@ impl SPA {
                 }),
                 page_title: self.title().to_owned(),
                 common: CommonJsonData {
-                    parents: parents(self),
+                    // Blog index is paginated, with the page as a path parameter, for example
+                    // `/en-US/blog/4`.
+                    // To avoid duplicate parent entries generated by traversing the URL,
+                    // just return the single base blog URL. The single Breadcrumb will always
+                    // link to the first blog index page.
+                    parents: vec![Parent {
+                        uri: "/en-US/blog/".to_string(),
+                        title: self.title().to_owned(),
+                    }],
                     ..Default::default()
                 },
                 image: None,