editor: Add basic work structure

src/db/mod.rs

@@ -38,6 +38,11 @@ pub fn connect(file_name: &str) -> Result<SqliteConnection> {
     Ok(connection)
 }
 
+/// Generate a random string suitable as an item ID.
+pub fn generate_id() -> String {
+    uuid::Uuid::new_v4().simple().to_string()
+}
+
 /// A single translated string value.
 #[derive(Serialize, Deserialize, AsExpression, FromSqlRow, Clone, Default, Debug)]
 #[diesel(sql_type = Text)]

src/db/models.rs

@@ -21,7 +21,7 @@ pub struct Work {
 }
 
 // TODO: Handle part composers.
-#[derive(Clone, Debug)]
+#[derive(Default, Clone, Debug)]
 pub struct WorkPart {
     pub work_id: String,
     pub level: u8,
@@ -113,6 +113,13 @@ impl PartialEq for Composer {
     }
 }
 
+impl Eq for WorkPart {}
+impl PartialEq for WorkPart {
+    fn eq(&self, other: &Self) -> bool {
+        self.work_id == other.work_id
+    }
+}
+
 impl Work {
     pub fn from_table(data: tables::Work, connection: &mut SqliteConnection) -> Result<Self> {
         fn visit_children(