Change default values

app/models/project_services/builds_email_service.rb

@@ -24,7 +24,12 @@ class BuildsEmailService < Service
   boolean_accessor :notify_only_broken_builds
   validates :recipients, presence: true, if: :activated?
 
-  default_value_for :notify_only_broken_builds, true
+  def initialize_properties
+    if properties.nil?
+      self.properties = {}
+      self.notify_only_broken_builds = true
+    end
+  end
 
   def title
     'Builds emails'

app/models/project_services/hipchat_service.rb

@@ -25,7 +25,12 @@ class HipchatService < Service
   boolean_accessor :notify_only_broken_builds
   validates :token, presence: true, if: :activated?
 
-  default_value_for :notify_only_broken_builds, true
+  def initialize_properties
+    if properties.nil?
+      self.properties = {}
+      self.notify_only_broken_builds = true
+    end
+  end
 
   def title
     'HipChat'

app/models/project_services/issue_tracker_service.rb

@@ -56,12 +56,16 @@ class IssueTrackerService < Service
   end
 
   def initialize_properties
-    if new_record?
+    if properties.nil?
       if enabled_in_gitlab_config
-        self.title = issues_tracker['title']
-        self.project_url = add_issues_tracker_id(issues_tracker['project_url'])
-        self.issues_url = add_issues_tracker_id(issues_tracker['issues_url'])
-        self.new_issue_url = add_issues_tracker_id(issues_tracker['new_issue_url'])
+        self.properties = {
+          title: issues_tracker['title'],
+          project_url: add_issues_tracker_id(issues_tracker['project_url']),
+          issues_url: add_issues_tracker_id(issues_tracker['issues_url']),
+          new_issue_url: add_issues_tracker_id(issues_tracker['new_issue_url'])
+        }
+      else
+        self.properties = {}
       end
     end
   end

app/models/project_services/slack_service.rb

@@ -23,7 +23,12 @@ class SlackService < Service
   boolean_accessor :notify_only_broken_builds
   validates :webhook, presence: true, if: :activated?
 
-  default_value_for :notify_only_broken_builds, true
+  def initialize_properties
+    if properties.nil?
+      self.properties = {}
+      self.notify_only_broken_builds = true
+    end
+  end
 
   def title
     'Slack'

app/models/service.rb

@@ -31,7 +31,6 @@ class Service < ActiveRecord::Base
   default_value_for :tag_push_events, true
   default_value_for :note_events, true
   default_value_for :build_events, true
-  default_value_for :properties, {}
 
   after_initialize :initialize_properties