Remove ActiveRecordShards::Model.not_sharded

README.md

@@ -44,15 +44,13 @@ basically connections inherit configuration from the parent configuration file.
 ## Usage
 
 Normally you have some models that live on a shared database, and you might need to query this data in order to know what shard to switch to.
-All the models that live on the shared database must be marked as not\_sharded:
+All the models that live on the sharded database must inherit from ActiveRecordShards::ShardedModel:
 
     class Account < ActiveRecord::Base
-      not_sharded
-
       has_many :projects
     end
 
-    class Project < ActiveRecord::Base
+    class Project < ActiveRecordShards::ShardedModel
       belongs_to :account
     end
 

lib/active_record_shards/default_slave_patches.rb

@@ -141,8 +141,6 @@ def model.on_slave_by_default?
           left_reflection.klass.on_slave_by_default?
         end
 
-        # also transfer the sharded-ness of the left table to the join model
-        model.not_sharded unless model.left_reflection.klass.is_sharded?
         model
       end
     end

lib/active_record_shards/model.rb

@@ -2,13 +2,6 @@
 
 module ActiveRecordShards
   module Model
-    def not_sharded
-      if self != ActiveRecord::Base && self != base_class
-        raise "You should only call not_sharded on direct descendants of ActiveRecord::Base"
-      end
-      self.sharded = false
-    end
-
     def is_sharded? # rubocop:disable Naming/PredicateName
       self <= ActiveRecordShards::ShardedModel
     end

lib/active_record_shards/patches-5-0.rb

@@ -8,5 +8,3 @@
 
 
 ActiveRecord::Associations::Builder::HasAndBelongsToMany.include(ActiveRecordShards::DefaultSlavePatches::Rails41HasAndBelongsToManyBuilderExtension)
-
-ActiveRecord::InternalMetadata.not_sharded