name delete if 0 attributions

src/persons/mod.rs

@@ -171,6 +171,16 @@ impl Name {
             })?
             .collect::<Result<Vec<Name>, _>>()?)
     }
+    pub fn times_attributed(&self, conn: &Connection) -> Result<i64, PersonError> {
+        Ok(conn
+            .prepare("SELECT COUNT(*) FROM lines WHERE name_id = ?1")?
+            .query_row((&self.id,), |r| r.get(0))?)
+    }
+    pub fn delete(self, conn: &Connection) -> Result<(), PersonError> {
+        conn.prepare("DELETE FROM names WHERE id = ?1")?
+            .execute((&self.id,))?;
+        Ok(())
+    }
     pub fn set_primary(&mut self, conn: &Connection) -> Result<(), PersonError> {
         if self.is_primary {
             return Err(PersonError::AlreadyPrimary);