Ability to delete geozones from admin dashboard

app/controllers/admin/geozones_controller.rb

@@ -29,6 +29,30 @@ class Admin::GeozonesController < Admin::BaseController
       render :edit
     end
   end
+
+  def destroy
+    # Check that in none of the other associated models talbes a record exists
+    # referencing this geozone
+    safe_to_destroy = true
+
+    # safe_to_destroy &= Proposal.where(geozone: @geozone).empty?
+    # safe_to_destroy &= Debate.where(geozone: @geozone).empty?
+    # safe_to_destroy &= SpendingProposal.where(geozone: @geozone).empty?
+    # safe_to_destroy &= User.where(geozone: @geozone).empty?
+
+    Geozone.reflect_on_all_associations.each do |association|
+      attached_model = association.klass
+      safe_to_destroy &= attached_model.where(geozone: @geozone).empty?
+    end
+
+    if safe_to_destroy
+      @geozone.destroy
+      redirect_to admin_geozones_url, notice: t('admin.geozones.delete.success')
+    else
+      redirect_to admin_geozones_path, flash: { error: t('admin.geozones.delete.error') }
+    end
+  end
+
   private
 
     def geozone_params