diff --git a/src/blog_post/definition.rs b/src/blog_post/definition.rs
index 5ef06b0..5179858 100644
--- a/src/blog_post/definition.rs
+++ b/src/blog_post/definition.rs
@@ -17,6 +17,10 @@ impl BlogPost {
         post_dir: P,
     ) -> Result<BlogPost, CustomError> {
         async fn inner(root_dir: &Path, post_dir: &Path) -> Result<BlogPost, CustomError> {
+            let post_id = post_dir
+                .file_name()
+                .expect("The post directory should have a name.");
+
             let org_files = {
                 let mut ret = Vec::new();
                 let org_files_iter = get_org_files(post_dir)?;
@@ -36,7 +40,7 @@ impl BlogPost {
             };
 
             Ok(BlogPost {
-                id: "foo".to_owned(),
+                id: post_id.to_string_lossy().into_owned(),
             })
         }
         inner(root_dir.as_ref(), post_dir.as_ref()).await
diff --git a/src/command/build/runner.rs b/src/command/build/runner.rs
index 38fb73e..9ca5f4a 100644
--- a/src/command/build/runner.rs
+++ b/src/command/build/runner.rs
@@ -19,5 +19,10 @@ pub(crate) async fn build_site(args: BuildArgs) -> Result<(), CustomError> {
         .into_iter()
         .map(walkdir::DirEntry::into_path)
         .map(|path| tokio::spawn(BlogPost::load_blog_post(root_directory.clone(), path)));
+    let mut blog_posts = Vec::new();
+    for job in load_jobs {
+        blog_posts.push(job.await??);
+    }
+    println!("{:?}", blog_posts);
     Ok(())
 }