Implement API sounds/create

app/controllers/api/sounds_controller.rb

@@ -1,6 +1,6 @@
 module API
   class SoundsController < ApplicationController
-    skip_before_filter :json_filter!, only: :show
+    skip_before_filter :json_filter!, only: %i[show create]
 
     before_action :set_sound, only: :show
 
@@ -8,6 +8,15 @@ module API
       send_file @sound.path, type: @sound.mime_type
     end
 
+    def create
+      @sound = Sound.new(sound_params)
+      if @sound.save
+        render :show, status: :created, location: api_sound_path(@sound)
+      else
+        render json: @sound.errors, status: :unprocessable_entity
+      end
+    end
+
 
     private
 
@@ -17,5 +26,9 @@ module API
         when /\A\h+\z/  then Sound.find_by_sha256!(params[:id])
       end
     end
+
+    def sound_params
+      params.require(:sound).permit :file
+    end
   end
 end