<p></p>
<p><b>@mmd-osm</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4240#discussion_r1320843920">app/controllers/api/user_blocks_controller.rb</a>:</p>
<pre style='color:#555'>> @@ -0,0 +1,18 @@
+module Api
+  class UserBlocksController < ApiController
+    before_action :check_api_readable
+
+    authorize_resource
+
+    around_action :api_call_handle_error, :api_call_timeout
+    before_action :set_request_formats
+
+    def show
+      raise OSM::APIBadUserInput, "No id was given" unless params[:id]
</pre>
<p dir="auto">Maybe make it a bit clearer, which "id" we expect here, like "No user block id was given".</p>

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