Merge pull request #117 from fotos/grape-1.2-compatibility

Add compatibility with Grape >= 1.2.0

Author: davidcelis

lib/api-pagination/hooks.rb

@@ -1,7 +1,14 @@
 begin; require 'grape'; rescue LoadError; end
 if defined?(Grape::API)
   require 'grape/pagination'
-  Grape::API.send(:include, Grape::Pagination)
+
+  klass = if Grape::VERSION >= '1.2.0' || defined?(Grape::API::Instance)
+    Grape::API::Instance
+  else
+    Grape::API
+  end
+
+  klass.send(:include, Grape::Pagination)
 end
 
 begin; require 'pagy';          rescue LoadError; end

spec/grape_spec.rb

@@ -5,6 +5,8 @@
 require 'support/shared_examples/last_page'
 
 describe NumbersAPI do
+  it { is_expected.to be_kind_of(Grape::Pagination) }
+
   describe 'GET #index' do
     let(:link) { last_response.headers['Link'] }
     let(:links) { link.split(', ') }