Return updated user on PUT /users/:id

app/controllers/users_controller.rb

@@ -18,7 +18,7 @@ def update
     if @user.update(user_params)
       respond_to do |format|
         format.html { redirect_to @user }
-        format.json { head :no_content }
+        format.json { render :show }
       end
     else
       respond_to do |format|

docs/api/sections/users.md

@@ -88,7 +88,7 @@ __Request:__
 
 __Response:__
 
-Returns `204 No Content` on success.
+Returns `200 OK` with the updated user in the same shape as `GET /:account_slug/users/:user_id`.
 
 ## `DELETE /:account_slug/users/:user_id/avatar`
 

test/controllers/api/flat_json_params_test.rb

@@ -184,8 +184,10 @@ class FlatJsonParamsTest < ActionDispatch::IntegrationTest
   test "update user with flat JSON" do
     put user_path(users(:david)), params: { name: "Flat Name" }, as: :json
 
-    assert_response :no_content
+    assert_response :success
     assert_equal "Flat Name", users(:david).reload.name
+    assert_equal users(:david).id, @response.parsed_body["id"]
+    assert_equal "Flat Name", @response.parsed_body["name"]
   end
 
   test "create webhook with flat JSON" do

test/controllers/users_controller_test.rb

@@ -120,8 +120,12 @@ class UsersControllerTest < ActionDispatch::IntegrationTest
 
     put user_path(users(:david)), params: { user: { name: "New David" } }, as: :json
 
-    assert_response :no_content
+    assert_response :success
     assert_equal "New David", users(:david).reload.name
+
+    json = @response.parsed_body
+    assert_equal users(:david).id, json["id"]
+    assert_equal "New David", json["name"]
   end
 
   test "update as JSON with invalid avatar returns errors" do