api: Remove encoding of string in update_user endpoint.

* Remove unnecessary json_validator for full_name parameter.
* Update frontend to pass the right parameter.
* Update documentation and note the change.

Fixes #18409.

static/js/settings_users.js

@@ -574,7 +574,7 @@ function handle_human_form(tbody, status_field) {
 
             const url = "/json/users/" + encodeURIComponent(user_id);
             const data = {
-                full_name: JSON.stringify(full_name.val()),
+                full_name: full_name.val(),
                 role: JSON.stringify(role),
                 profile_data: JSON.stringify(profile_data),
             };

templates/zerver/api/changelog.md

@@ -11,6 +11,11 @@ below features are supported.
 
 ## Changes in Zulip 5.0
 
+**Feature level 106**
+
+* [`PATCH /user/{user_id}`](/api/update-user): Removed unnecessary JSON-encoding of string
+  parameter `full_name`.
+
 **Feature level 105**
 
 * [`POST /register`](/api/register-queue), [`PATCH

version.py

@@ -33,7 +33,7 @@ DESKTOP_WARNING_VERSION = "5.4.3"
 # Changes should be accompanied by documentation explaining what the
 # new level means in templates/zerver/api/changelog.md, as well as
 # "**Changes**" entries in the endpoint's documentation in `zulip.yaml`.
-API_FEATURE_LEVEL = 105
+API_FEATURE_LEVEL = 106
 
 # Bump the minor PROVISION_VERSION to indicate that folks should provision
 # only when going from an old version of the code to a newer version. Bump

zerver/openapi/zulip.yaml

@@ -8277,11 +8277,12 @@ paths:
           in: query
           description: |
             The user's full name.
-          content:
-            application/json:
-              schema:
-                type: string
-              example: NewName
+
+            **Changes**: Removed unnecessary JSON-encoding of this parameter in
+            Zulip 5.0 (feature level 106).
+          schema:
+            type: string
+          example: NewName
           required: false
         - name: role
           in: query

zerver/tests/test_audit_log.py

@@ -206,7 +206,7 @@ class TestRealmAuditLog(ZulipTestCase):
         start = timezone_now()
         new_name = "George Hamletovich"
         self.login("iago")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch("/json/users/{}".format(self.example_user("hamlet").id), req)
         self.assertTrue(result.status_code == 200)
         query = RealmAuditLog.objects.filter(

zerver/tests/test_users.py

@@ -377,7 +377,7 @@ class PermissionTest(ZulipTestCase):
         new_name = "new name"
         self.login("iago")
         hamlet = self.example_user("hamlet")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch(f"/json/users/{hamlet.id}", req)
         self.assert_json_success(result)
         hamlet = self.example_user("hamlet")
@@ -385,21 +385,21 @@ class PermissionTest(ZulipTestCase):
 
     def test_non_admin_cannot_change_full_name(self) -> None:
         self.login("hamlet")
-        req = dict(full_name=orjson.dumps("new name").decode())
+        req = dict(full_name="new name")
         result = self.client_patch("/json/users/{}".format(self.example_user("othello").id), req)
         self.assert_json_error(result, "Insufficient permission")
 
     def test_admin_cannot_set_long_full_name(self) -> None:
         new_name = "a" * (UserProfile.MAX_NAME_LENGTH + 1)
         self.login("iago")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch("/json/users/{}".format(self.example_user("hamlet").id), req)
         self.assert_json_error(result, "Name too long!")
 
     def test_admin_cannot_set_short_full_name(self) -> None:
         new_name = "a"
         self.login("iago")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch("/json/users/{}".format(self.example_user("hamlet").id), req)
         self.assert_json_error(result, "Name too short!")
 
@@ -407,7 +407,7 @@ class PermissionTest(ZulipTestCase):
         # Name of format "Alice|999" breaks in Markdown
         new_name = "iago|72"
         self.login("iago")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch("/json/users/{}".format(self.example_user("hamlet").id), req)
         self.assert_json_error(result, "Invalid format!")
 
@@ -415,21 +415,21 @@ class PermissionTest(ZulipTestCase):
         # Adding characters after r'|d+' doesn't break Markdown
         new_name = "Hello- 12iago|72k"
         self.login("iago")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch("/json/users/{}".format(self.example_user("hamlet").id), req)
         self.assert_json_success(result)
 
     def test_not_allowed_format_complex(self) -> None:
         new_name = "Hello- 12iago|72"
         self.login("iago")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch("/json/users/{}".format(self.example_user("hamlet").id), req)
         self.assert_json_error(result, "Invalid format!")
 
     def test_admin_cannot_set_full_name_with_invalid_characters(self) -> None:
         new_name = "Opheli*"
         self.login("iago")
-        req = dict(full_name=orjson.dumps(new_name).decode())
+        req = dict(full_name=new_name)
         result = self.client_patch("/json/users/{}".format(self.example_user("hamlet").id), req)
         self.assert_json_error(result, "Invalid characters in name!")
 

zerver/views/users.py

@@ -163,7 +163,7 @@ def update_user_backend(
     request: HttpRequest,
     user_profile: UserProfile,
     user_id: int,
-    full_name: Optional[str] = REQ(default=None, json_validator=check_string),
+    full_name: Optional[str] = REQ(default=None),
     role: Optional[int] = REQ(
         default=None,
         json_validator=check_int_in(