Add Arist::display_list function

src/models.rs

@@ -164,6 +164,26 @@ impl Artist {
 
 		Ok(my_songs)
 	}
+
+	/// Display a list of artists as a string.
+	/// 
+	/// For one artist, displays [artist1]. For two artists, displays [artist1] & [artist2].
+	/// For three or more artists, displays [artist1], [artist2], & [artist3].
+	pub fn display_list(artists: &Vec<Artist>) -> String {
+		let mut artist_list = String::new();
+
+		for (i, artist) in artists.iter().enumerate() {
+			if i == 0 {
+				artist_list.push_str(&artist.name);
+			} else if i == artists.len() - 1 {
+				artist_list.push_str(&format!(" & {}", artist.name));
+			} else {
+				artist_list.push_str(&format!(", {}", artist.name));
+			}
+		}
+
+		artist_list
+	}
 }
 
 /// Model for an album