Module: Switchman::ActiveRecord::Reflection::AssociationScopeCache

Defined in:
lib/switchman/active_record/reflection.rb

Instance Method Summary collapse

Instance Method Details

#association_scope_cache(conn, owner, &block) ⇒ Object

cache association scopes by shard. this technically belongs on AssociationReflection, but we put it on ThroughReflection as well, instead of delegating to its internal HasManyAssociation, losing its proper klass



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# File 'lib/switchman/active_record/reflection.rb', line 29

def association_scope_cache(conn, owner, &block)
  key = conn.prepared_statements
  if polymorphic?
    key = [key, owner._read_attribute(@foreign_type)]
  end
  key = [key, shard(owner).id].flatten
  @association_scope_cache[key] ||= @scope_lock.synchronize {
    @association_scope_cache[key] ||= (::Rails.version >= "5.2" ? ::ActiveRecord::StatementCache.create(conn, &block) : block.call)
  }
end

#initialize(*args) ⇒ Object 



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# File 'lib/switchman/active_record/reflection.rb', line 16

def initialize(*args)
  super
  # on ThroughReflection, these won't be initialized (cause it doesn't
  # inherit from AssociationReflection), so make sure they're
  # initialized here
  @association_scope_cache ||= {}
  @scope_lock ||= Mutex.new
end