style(rubocop): fix all safe auto correctable offenses

app/models/concerns/has_message.rb

@@ -5,7 +5,7 @@ module HasMessage
   end
 
   def message
-    @message ||= self.server.message_db.message(self.message_id)
+    @message ||= server.message_db.message(message_id)
   end
 
   def message=(message)
@@ -14,6 +14,7 @@ module HasMessage
   end
 
   module ClassMethods
+
     def include_message
       queued_messages = all.to_a
       server_ids = queued_messages.map(&:server_id).uniq
@@ -22,10 +23,11 @@ module HasMessage
       elsif server_ids.size > 1
         raise Postal::Error, "'include_message' can only be used on collections of messages from the same server"
       end
+
       message_ids = queued_messages.map(&:message_id).uniq
       server = queued_messages.first&.server
-      messages = server.message_db.messages(:where => {:id => message_ids}).each_with_object({}) do |message, hash|
-        hash[message.id] = message
+      messages = server.message_db.messages(where: { id: message_ids }).index_by do |message|
+        message.id
       end
       queued_messages.each do |queued_message|
         if m = messages[queued_message.message_id]
@@ -33,6 +35,7 @@ module HasMessage
         end
       end
     end
+
   end
 
 end

app/models/concerns/has_soft_destroy.rb

@@ -3,16 +3,16 @@ module HasSoftDestroy
   def self.included(base)
     base.define_callbacks :soft_destroy
     base.class_eval do
-      scope :deleted, -> { where.not(:deleted_at => nil) }
-      scope :present, -> { where(:deleted_at => nil) }
+      scope :deleted, -> { where.not(deleted_at: nil) }
+      scope :present, -> { where(deleted_at: nil) }
     end
   end
 
   def soft_destroy
     run_callbacks :soft_destroy do
       self.deleted_at = Time.now
-      self.save!
-      ActionDeletionJob.queue(:main, :type => self.class.name, :id => self.id)
+      save!
+      ActionDeletionJob.queue(:main, type: self.class.name, id: id)
     end
   end
 

app/models/concerns/has_uuid.rb

@@ -1,11 +1,13 @@
 module HasUUID
+
   def self.included(base)
     base.class_eval do
-      random_string :uuid, :type => :uuid, :unique => true
+      random_string :uuid, type: :uuid, unique: true
     end
   end
 
   def to_param
     uuid
   end
+
 end