Display in which revision this revision is an input

src/bin/web.rs

@@ -136,5 +136,6 @@ async fn route_revision(
     Ok(render_template(&RevisionTemplate {
         revision_uri: revision_uri.clone(),
         inputs: state.storage.inputs_for_revision(&revision_uri).await?,
+        input_of: state.storage.input_of_for_revision(&revision_uri).await?,
     })?)
 }

src/storage.rs

@@ -86,6 +86,25 @@ impl Storage {
             .await
             .context("Failed to fetch data from database")
     }
+
+    pub async fn input_of_for_revision(&self, revision_uri: &str) -> Result<Vec<InputModel>> {
+        sqlx::query_as("
+            SELECT
+                flake_revision_uri,
+                input_name,
+                revision_uri,
+                uri,
+                nar_hash,
+                last_modified
+            FROM flake_revisions_inputs
+            WHERE revision_uri = ?
+            ORDER BY input_name
+            ")
+            .bind(&revision_uri)
+            .fetch_all(&self.db)
+            .await
+            .context("Failed to fetch data from database")
+    }
 }
 
 #[derive(FromRow)]
@@ -132,6 +151,10 @@ pub struct InputModel {
 }
 
 impl InputModel {
+    pub fn flake_revision_link(&self) -> String {
+        format!("/r/{}", urlencode(&self.flake_revision_uri))
+    }
+
     pub fn revision_link(&self) -> String {
         match &self.revision_uri {
             Some(revision_uri) => format!("/r/{}", urlencode(&revision_uri)),

src/templates.rs

@@ -32,4 +32,5 @@ pub struct FlakeTemplate {
 pub struct RevisionTemplate {
     pub revision_uri: String,
     pub inputs: Vec<InputModel>,
+    pub input_of: Vec<InputModel>,
 }

templates/revision.html

@@ -29,5 +29,13 @@
 	</li>
 {% endfor %}
 </ul>
+
+<h2>Input of</h2>
+
+<ul>
+{% for input in input_of %}
+	<li><a href="{{ input.flake_revision_link() }}">{{ input.flake_revision_uri }}</a></li>
+{% endfor %}
+</ul>
 {% endblock %}