From 1523838567606327fabf08c4b5aeacbca7b2201c Mon Sep 17 00:00:00 2001
From: lulalala <mark@goodlife.tw>
Date: Wed, 21 Jul 2021 20:56:28 +0800
Subject: [PATCH] Slimmer ActiveModel::Errors#inspect

Only show @errors array and hide @base
---
 activemodel/CHANGELOG.md               | 3 +++
 activemodel/lib/active_model/errors.rb | 6 ++++++
 activemodel/test/cases/errors_test.rb  | 7 +++++++
 3 files changed, 16 insertions(+)

diff --git a/activemodel/CHANGELOG.md b/activemodel/CHANGELOG.md
index 1efa642c54..33b3b30ff9 100644
--- a/activemodel/CHANGELOG.md
+++ b/activemodel/CHANGELOG.md
@@ -14,5 +14,8 @@
 
     *Lukas Pokorny*
 
+*   Make ActiveModel::Errors#inspect slimmer for readability
+
+    *lulalala*
 
 Please check [6-1-stable](https://github.com/rails/rails/blob/6-1-stable/activemodel/CHANGELOG.md) for previous changes.
diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb
index 10a8100601..e249889c23 100644
--- a/activemodel/lib/active_model/errors.rb
+++ b/activemodel/lib/active_model/errors.rb
@@ -571,6 +571,12 @@ module ActiveModel
       add_from_legacy_details_hash(data["details"]) if data.key?("details")
     end
 
+    def inspect # :nodoc:
+      inspection = @errors.inspect
+
+      "#<#{self.class.name} #{inspection}>"
+    end
+
     private
       def normalize_arguments(attribute, type, **options)
         # Evaluate proc first
diff --git a/activemodel/test/cases/errors_test.rb b/activemodel/test/cases/errors_test.rb
index f88bd85937..20844f8c5f 100644
--- a/activemodel/test/cases/errors_test.rb
+++ b/activemodel/test/cases/errors_test.rb
@@ -880,4 +880,11 @@ class ErrorsTest < ActiveModel::TestCase
     assert_equal({}, errors.messages)
     assert_equal({}, errors.details)
   end
+
+  test "inspect" do
+    errors = ActiveModel::Errors.new(Person.new)
+    errors.add(:base)
+
+    assert_equal(%(#<ActiveModel::Errors [#{errors.first.inspect}]>), errors.inspect)
+  end
 end