created file sync

web/app/models/configuration_file.rb

@@ -1,5 +1,33 @@
 class ConfigurationFile < ActiveRecord::Base
   belongs_to :server
   belongs_to :file_type
-  has_many :file_versions
+  has_many :file_versions, -> { order('number DESC') }
+
+  def self.create_from_template!(template, server_id)
+    file = ConfigurationFile.new
+    file.server_id = server_id
+    file.file_path = template.file_path
+    file.file_type = template.file_type
+    file.namehash = SecureRandom.hex
+    transaction do
+      file.save!
+      file.file_versions.create!(content: template.content)
+    end
+    file
+  end
+
+  def update_by_form(content, path)
+    transaction do
+      update_attribute(:file_path, path)
+      file_versions.create!(content: content, number: last_version.number + 1)
+    end
+  end
+  
+  def update_by_api(file)
+    file_versions.create!(content: file.read, number: last_version.number + 1)
+  end
+
+  def last_version
+    file_versions.first
+  end
 end

web/app/models/file_type.rb

@@ -1,3 +1,7 @@
 class FileType < ActiveRecord::Base
   has_many :configuration_files
+
+  def to_s
+    name
+  end
 end