class WebHook < ActiveRecord::Base
  include HTTParty

  # HTTParty timeout
  default_timeout 10

  belongs_to :project

  validates :url,
            presence: true,
            format: {
              with: URI::regexp(%w(http https)),
              message: "should be a valid url" }

  def execute(data)
    WebHook.post(url, body: data.to_json)
  rescue
    # There was a problem calling this web hook, let's forget about it.
  end
end

class WebHook < ActiveRecord::Base
  include HTTParty

  # HTTParty timeout
  default_timeout 10

  belongs_to :project

  validates :url,
            presence: true,
            format: {
              with: /(^$)|(^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$)/ix,
              message: "should be a valid url" }

  def execute(data)
    WebHook.post(url, body: data.to_json)
  rescue
    # There was a problem calling this web hook, let's forget about it.
  end
end

--- 
+++ 
@@ -9,7 +9,7 @@
   validates :url,
             presence: true,
             format: {
-              with: /(^$)|(^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$)/ix,
+              with: URI::regexp(%w(http https)),
               message: "should be a valid url" }
 
   def execute(data)
Use URI::regexp for validating WebHook urls
