respect the convention

snippets/ruby.snippets

@@ -756,41 +756,41 @@ snippet mapwo
 
 # before callback
 snippet cbv
-  before_validation :${0:method}
+	before_validation :${0:method}
 snippet cbc
-  before_create :${0:method}
+	before_create :${0:method}
 snippet cbu
-  before_update :${0:method}
+	before_update :${0:method}
 snippet cbs
 	before_save :${0:method}
 snippet cbd
-  before_destroy :${0:method}
+	before_destroy :${0:method}
 
 # after callback
 snippet cav
-  after_validation :${0:method}
+	after_validation :${0:method}
 snippet caf
-  after_find :${0:method}
+	after_find :${0:method}
 snippet cat
-  after_touch :${0:method}
+	after_touch :${0:method}
 snippet cac
-  after_create :${0:method}
+	after_create :${0:method}
 snippet cau
-  after_update :${0:method}
+	after_update :${0:method}
 snippet cas
-  after_save :${0:method}
+	after_save :${0:method}
 snippet cad
-  after_destroy :${0:method}
+	after_destroy :${0:method}
 
 # around callback
 snippet crc
-  around_create :${0:method}
+	around_create :${0:method}
 snippet cru
-  around_update :${0:method}
+	around_update :${0:method}
 snippet crs
-  around_save :${0:method}
+	around_save :${0:method}
 snippet crd
-  around_destroy :${0:method}
+	around_destroy :${0:method}
 
 snippet mcht
 	change_table :${1:table_name} do |t|