MONGOID-5323: Remove deprecated Mongoid::Errors::EagerLoad class (#5240)

* Remove deprecated Mongoid::Errors::EagerLoad class. It is not used in the code at all.

* Remove I18n message

* Remove require

* add release note

Co-authored-by: shields <[email protected]>
Co-authored-by: Oleg Pudeyev <[email protected]>

Author: johnnyshields

docs/release-notes/mongoid-8.0.txt

@@ -310,6 +310,15 @@ The previously deprecated ``Document#to_a`` method has been removed in
 Mongoid 8.
 
 
+Removed ``Mongoid::Errors::EagerLoad`` Exception Class
+------------------------------------------------------
+
+The previously deprecated ``Mongoid::Errors::EagerLoad`` exception class
+has been removed in Mongoid 8. It has not been used by Mongoid since
+version 7.1.1 when eager loading for polymorphic ``belongs_to`` associations
+was implemented.
+
+
 Replaced ``Mongoid::Criteria#geo_spacial`` with ``#geo_spatial``
 ----------------------------------------------------------------
 

lib/config/locales/en.yml

@@ -72,14 +72,6 @@ en:
           resolution: "Search for attributes that are in the database or set
             the Mongoid.raise_not_found_error configuration option to false,
             which will cause a nil to be returned instead of raising this error."
-        eager_load:
-          message: "Eager loading :%{name} is not supported since it is a
-            polymorphic belongs_to association."
-          summary: "Mongoid cannot currently determine the classes it needs to
-            eager load when the association is polymorphic. The parents reside in
-            different collections so a simple id lookup is not sufficient enough."
-          resolution: "Don't attempt to perform this action and have patience,
-            maybe this will be supported in the future."
         empty_config_file:
           message: "Empty configuration file: %{path}."
           summary: "Your mongoid.yml configuration file appears to be empty."

lib/mongoid/errors.rb

@@ -6,7 +6,6 @@
 require "mongoid/errors/criteria_argument_required"
 require "mongoid/errors/document_not_destroyed"
 require "mongoid/errors/document_not_found"
-require "mongoid/errors/eager_load"
 require "mongoid/errors/empty_config_file"
 require "mongoid/errors/in_memory_collation_not_supported"
 require "mongoid/errors/invalid_collection"