Remove exists? override to simplify. Closes excid3#75

CHANGELOG.md

@@ -1,5 +1,13 @@
 ### Unreleased
 
+* [Breaking] Remove `exists?` override.
+
+To continue using `exists?`, you can decode the ID first:
+
+```ruby
+User.exists? User.decode_prefix_id(params[:id])
+```
+
 ### 1.8.1
 
 * Ensure that decode returns all parts of composite key

lib/prefixed_ids.rb

@@ -38,11 +38,10 @@ module Rails
     end
 
     class_methods do
-      def has_prefix_id(prefix, override_find: true, override_param: true, override_exists: true, fallback: true, **options)
+      def has_prefix_id(prefix, override_find: true, override_param: true, fallback: true, **options)
         include Attribute
         include Finder if override_find
         include ToParam if override_param
-        include Exists if override_exists
         self._prefix_id = PrefixId.new(self, prefix, **options)
         self._prefix_id_fallback = fallback
 
@@ -124,18 +123,4 @@ def to_param
       _prefix_id.encode(id)
     end
   end
-
-  module Exists
-    extend ActiveSupport::Concern
-
-    class_methods do
-      def exists?(id)
-        if _prefix_id.present? && id.is_a?(String)
-          super(_prefix_id.decode(id))
-        else
-          super
-        end
-      end
-    end
-  end
 end

test/prefixed_ids_test.rb

@@ -191,23 +191,6 @@ class PrefixedIdsTest < ActiveSupport::TestCase
     assert_equal account, account.user.accounts.find(account.prefix_id)
   end
 
-  test "exists? works with prefixed ID" do
-    account = accounts(:one)
-    assert Account.exists?(account.prefix_id)
-  end
-
-  test "disabled exists? with prefixed ID" do
-    post = posts(:one)
-
-    refute Post.exists?(post.prefix_id)
-  end
-
-  test "exists? works with conditions instead of ID" do
-    account = accounts(:one)
-
-    assert Account.exists?(id: account.id)
-  end
-
   test "calling find on an associated model without prefix id succeeds" do
     nonprefixed_item = nonprefixed_items(:one)
     user = users(:one)