Slack notify integration

Gemfile.lock

@@ -36,6 +36,7 @@ PATH
       sass (>= 3.4.0)
       sass-rails (>= 5.0.7)
       simple_form (<= 5.1)
+      slack-notifier
       slim
       uglifier
 
@@ -426,6 +427,7 @@ GEM
     simple_form (5.1.0)
       actionpack (>= 5.2)
       activemodel (>= 5.2)
+    slack-notifier (2.4.0)
     slim (4.1.0)
       temple (>= 0.7.6, < 0.9)
       tilt (>= 2.0.6, < 2.1)

app/models/concerns/fae/base_model_concern.rb

@@ -8,6 +8,31 @@ module BaseModelConcern
     included do
       include Fae::Trackable if Fae.track_changes
       include Fae::Sortable
+      after_create :notify_initiation
+      before_save :notify_changes
+    end
+
+    def notify_changes
+      return unless notifiable_attributes.present?
+      notifiable_attributes.each do |field_name_symbol|
+        if self.send("#{field_name_symbol}_changed?") && self.send(field_name_symbol).present?
+          format_and_send_slack(field_name_symbol)
+        end
+      end
+    end
+
+    def notify_initiation
+      return unless notifiable_attributes.present?
+      notifiable_attributes.each do |field_name_symbol|
+        if self.send(field_name_symbol).present?
+          format_and_send_slack(field_name_symbol)
+        end
+      end
+    end
+
+    def notifiable_attributes
+      # override this method in your model
+      # array of attributes to notify if changed
     end
 
     def fae_display_field
@@ -36,6 +61,11 @@ def fae_form_manager_model_id
       self.id
     end
 
+    def format_and_send_slack(field_name_symbol)
+      message = "#{Rails.application.class.module_parent_name} - #{name} (#{self.class.name.constantize}) - #{field_name_symbol.to_s} set to '#{self.send(field_name_symbol)}'"
+      Fae::SlackNotification.new().send_slack(message: message)
+    end
+
     module ClassMethods
       def for_fae_index
         order(order_method)

app/services/fae/slack_notification.rb

@@ -0,0 +1,17 @@
+require 'slack-notifier'
+
+module Fae
+  class SlackNotification
+
+    def send_slack(webhook: ENV["SLACK_WEBHOOK_URL"], message: nil)
+      if webhook.is_a?(String)
+        webhook = webhook.split(',')
+      end
+      webhook.each do |wh|
+        notifier = Slack::Notifier.new wh
+        notifier.ping message
+      end
+    end
+
+  end
+end

fae.gemspec

@@ -59,6 +59,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'slim'
   s.add_dependency 'devise-two-factor'
   s.add_dependency 'rqrcode'
+  s.add_dependency 'slack-notifier'
 
   s.add_development_dependency 'appraisal'
   s.add_development_dependency 'better_errors'

spec/dummy/app/models/wine.rb

@@ -32,4 +32,8 @@ def self.for_fae_index
     order(:position)
   end
 
+  def notifiable_attributes
+    [:on_stage, :on_prod, :description_en]
+  end
+
 end