Error handling validated models

app/graphql/mutations/create_link.rb

@@ -13,6 +13,8 @@ def resolve(description: nil, url: nil)
         url: url,
         user: context[:current_user]
       )
+    rescue ActiveRecord::RecordInvalid => error
+      GraphQL::ExecutionError.new("Invalid input: #{error.record.errors.full_messages.join(', ')}")
     end
   end
 end

app/models/link.rb

@@ -1,5 +1,8 @@
 class Link < ApplicationRecord
   belongs_to :user, optional: true # Prevent ActiveRecord::RecordInvalid
 
+  validates :url, presence: true, length: { minimum: 5 }
+  validates :description, presence: true, length: { minimum: 5 }
+
   has_many :votes
 end