Avoid use of Hash#dig to keep compatibility with Ruby 2.1

lib/bitbucket/representation/comment.rb

@@ -6,7 +6,7 @@ module Bitbucket
       end
 
       def note
-        raw.dig('content', 'raw')
+        raw.fetch('content', {}).fetch('raw', nil)
       end
 
       def created_at

lib/bitbucket/representation/issue.rb

@@ -12,11 +12,11 @@ module Bitbucket
       end
 
       def author
-        raw.dig('reporter', 'username')
+        raw.fetch('reporter', {}).fetch('username', nil)
       end
 
       def description
-        raw.dig('content', 'raw')
+        raw.fetch('content', {}).fetch('raw', nil)
       end
 
       def state
@@ -28,7 +28,7 @@ module Bitbucket
       end
 
       def milestone
-        raw.dig('milestone', 'name')
+        raw['milestone']['name'] if raw['milestone'].present?
       end
 
       def created_at

lib/bitbucket/representation/pull_request.rb

@@ -2,7 +2,7 @@ module Bitbucket
   module Representation
     class PullRequest < Representation::Base
       def author
-        raw.dig('author', 'username')
+        raw.fetch('author', {}).fetch('username', nil)
       end
 
       def description
@@ -36,19 +36,19 @@ module Bitbucket
       end
 
       def source_branch_name
-        source_branch.dig('branch', 'name')
+        source_branch.fetch('branch', {}).fetch('name', nil)
       end
 
       def source_branch_sha
-        source_branch.dig('commit', 'hash')
+        source_branch.fetch('commit', {}).fetch('hash', nil)
       end
 
       def target_branch_name
-        target_branch.dig('branch', 'name')
+        target_branch.fetch('branch', {}).fetch('name', nil)
       end
 
       def target_branch_sha
-        target_branch.dig('commit', 'hash')
+        target_branch.fetch('commit', {}).fetch('hash', nil)
       end
 
       private

lib/bitbucket/representation/pull_request_comment.rb

@@ -18,7 +18,7 @@ module Bitbucket
       end
 
       def parent_id
-        raw.dig('parent', 'id')
+        raw.fetch('parent', {}).fetch('id', nil)
       end
 
       def inline?