Fix employee adding

app/controllers/suppliers/employees_controller.rb

@@ -20,10 +20,23 @@ module Suppliers
     # POST /employees
     # POST /employees.json
     def create
-      @employee = Employee.find_by_email(employee_params[:email]) if employee_params[:email].present?
+      valid = false
+      if existing_employee = Employee.find_by_email(employee_params[:email])
+        @employee = existing_employee
+        if valid = @employee.valid?
+          current_supplier.add_employee @employee
+          @employee.update_attributes employee_params
+        end
+      else
+        @employee = Employee.new(employee_params)
+        @employee.password = SecureRandom.hex(8)
+        if valid = @employee.save
+          current_supplier.add_employee @employee
+          @employee.update_attributes employee_params # needed for supplier specific settings
+        end
+      end
 
-      if @employee.save
-        current_supplier.add_employee @employee unless current_supplier.employee_ids.include? @employee.id # already linked
+      if valid
         render json: @employee, serializer: Suppliers::EmployeeSerializer, status: :created
       else
         render json: {errors: @employee.errors}, status: :unprocessable_entity