Fix assciation :pastings

lib/acts_as_pasting/pasted.rb

@@ -4,7 +4,7 @@ module ActsAsPasting
 
     # 带 prefix 的 pasted_with，独立于不带 prefix 的之外
     included do
-      has_many :pastings, as: :pasted
+      has_many :pastings, as: :pasted, class_name: 'ActsAsPasting::Pasting'
       # ary => [[klass, id], [klass, id]]
       # ary => [obj, obj]
       scope :pasted_with_any, ->(ary, prefix: '') {
@@ -207,7 +207,7 @@ module ActsAsPasting
 
     module Association
       def acts_as_pasted associations, options={}
-        has_many :pastings, as: :pasteable
+        has_many :pastings, as: :pasteable, class_name: 'ActsAsPasting::Pasting'
         has_many associations, through: :pastings, source: :pasted, **options
       end
     end