Refactor admin routes to use new AppError struct in responses

src/routes/admin/change_password.rs

@@ -1,6 +1,6 @@
 use crate::{
     authentication::{self, AuthenticatedUser, Credentials, validate_credentials},
-    routes::AdminError,
+    routes::{AdminError, AppError},
     startup::AppState,
     templates::MessageTemplate,
 };
@@ -25,7 +25,7 @@ pub async fn change_password(
         connection_pool, ..
     }): State<AppState>,
     Form(form): Form<PasswordFormData>,
-) -> Result<Response, AdminError> {
+) -> Result<Response, AppError> {
     let credentials = Credentials {
         username,
         password: form.current_password,
@@ -33,16 +33,15 @@ pub async fn change_password(
     if form.new_password.expose_secret() != form.new_password_check.expose_secret() {
         Err(AdminError::ChangePassword(
             "You entered two different passwords - the field values must match.".to_string(),
-        ))
+        )
+        .into())
     } else if validate_credentials(credentials, &connection_pool)
         .await
         .is_err()
     {
-        Err(AdminError::ChangePassword(
-            "The current password is incorrect.".to_string(),
-        ))
+        Err(AdminError::ChangePassword("The current password is incorrect.".to_string()).into())
     } else if let Err(e) = verify_password(form.new_password.expose_secret()) {
-        Err(AdminError::ChangePassword(e))
+        Err(AdminError::ChangePassword(e).into())
     } else {
         authentication::change_password(user_id, form.new_password, &connection_pool)
             .await