<p></p>
<p><b>@AntonKhorev</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/4301#discussion_r1367751934">app/controllers/api/user_blocks_controller.rb</a>:</p>
<pre style='color:#555'>> @@ -14,5 +16,30 @@ def show
     rescue ActiveRecord::RecordNotFound
       raise OSM::APINotFoundError
     end
+
+    def create
+      raise OSM::APIBadUserInput, "No user was given" unless params[:user]
+
+      user = User.visible.find_by(:id => params[:user])
+      raise OSM::APINotFoundError unless user
+      raise OSM::APIBadUserInput, "No reason was given" unless params[:reason]
+      raise OSM::APIBadUserInput, "No period was given" unless params[:period]
+
+      period = Integer(params[:period], :exception => false)
+      raise OSM::APIBadUserInput, "Period one is in a wrong format" unless period
</pre>
<p dir="auto">I was copying the structure of error messages from other controllers where you can find "Date #{params[:from]} is in a wrong format".</p>
<p dir="auto">Changed to "Period should be a number of hours".</p>

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