fix(graphql): 🐛 fix Juniper objects @George-Miao

src/model.rs

@@ -87,10 +87,10 @@ impl<'de> Deserialize<'de> for Edge {
 }
 
 #[cfg(feature = "graphql")]
-#[juniper::object]
+#[juniper::graphql_object]
 impl Edge {
     fn cursor(&self) -> String {
-        self.cursor.to_owned()
+        self.0.to_string()
     }
 }
 
@@ -128,7 +128,7 @@ pub struct PageInfo {
 }
 
 #[cfg(feature = "graphql")]
-#[juniper::object]
+#[juniper::graphql_object]
 impl PageInfo {
     fn has_next_page(&self) -> bool {
         self.has_next_page
@@ -139,11 +139,11 @@ impl PageInfo {
     }
 
     fn start_cursor(&self) -> Option<String> {
-        self.start_cursor.to_owned()
+        self.start_cursor.as_ref().map(ToString::to_string)
     }
 
     fn end_cursor(&self) -> Option<String> {
-        self.next_cursor.to_owned()
+        self.end_cursor.as_ref().map(ToString::to_string)
     }
 }
 
@@ -162,7 +162,7 @@ pub struct FindResult<T> {
 }
 
 /// Cursor to an item with direction information.
-/// Serializing pretains the direction Information.
+/// Serializing pertains the direction Information.
 /// To send only the Cursor use `to_string` which drops the direction information
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 #[allow(clippy::exhaustive_enums)] // If there would ever be more Variants we would want the Code to break