Implement removing job skills

This lets users remove job skills, for if they accidentally set them.

app/controllers/api/v1/jobs_controller.rb

@@ -3,8 +3,8 @@
 module Api
   module V1
     class JobsController < Api::V1::ApiController
-      before_action :set, only: %w[update_job update_job_skills]
-      before_action :authorize, only: %w[update_job update_job_skills]
+      before_action :set, only: %w[update_job update_job_skills destroy_job_skill]
+      before_action :authorize, only: %w[update_job update_job_skills destroy_job_skill]
 
       def all
         render json: JobBlueprint.render(Job.all)
@@ -80,6 +80,12 @@ module Api
         render json: PartyBlueprint.render(@party, view: :jobs) if @party.save!
       end
 
+      def destroy_job_skill
+        position = job_params[:skill_position].to_i
+        @party["skill#{position}_id"] = nil
+        render json: PartyBlueprint.render(@party, view: :jobs) if @party.save
+      end
+
       private
 
       def merge_skills_with_existing_skills(
@@ -180,7 +186,8 @@ module Api
           :skill0_id,
           :skill1_id,
           :skill2_id,
-          :skill3_id
+          :skill3_id,
+          :skill_position
         )
       end
     end

config/routes.rb

@@ -26,6 +26,7 @@ Rails.application.routes.draw do
 
       put 'parties/:id/jobs', to: 'jobs#update_job'
       put 'parties/:id/job_skills', to: 'jobs#update_job_skills'
+      delete 'parties/:id/job_skills', to: 'jobs#destroy_job_skill'
 
       post 'check/email', to: 'users#check_email'
       post 'check/username', to: 'users#check_username'