Implement Grape::Entity::Options#dig with freezing rubocop version #277 + #278

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 #### Features
 
+* [#277](https://github.com/ruby-grape/grape-entity/pull/277): Provide grape::entity::options#dig - [@kachick](https://github.com/kachick).
 * [#265](https://github.com/ruby-grape/grape-entity/pull/265): Adds ability to provide a proc to as: - [@james2m](https://github.com/james2m).
 * [#264](https://github.com/ruby-grape/grape-entity/pull/264): Adds Rubocop config and todo list - [@james2m](https://github.com/james2m).
 * [#255](https://github.com/ruby-grape/grape-entity/pull/255): Adds code coverage w/ coveralls - [@LeFnord](https://github.com/LeFnord).

Gemfile

@@ -4,6 +4,10 @@ source 'http://rubygems.org'
 
 gemspec
 
+group :development, :test do
+  gem 'rubocop', '~> 0.48.0', require: false
+end
+
 group :test do
   gem 'coveralls', require: false
   gem 'growl'

grape-entity.gemspec

@@ -23,7 +23,6 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'bundler'
   s.add_development_dependency 'rake'
-  s.add_development_dependency 'rubocop', '~> 0.48'
   s.add_development_dependency 'rspec', '~> 3.0'
   s.add_development_dependency 'rack-test'
   s.add_development_dependency 'maruku'

lib/grape_entity/options.rb

@@ -25,6 +25,10 @@ def key?(key)
         @opts_hash.key? key
       end
 
+      def dig(*keys)
+        @opts_hash.dig(*keys)
+      end
+
       def merge(new_opts)
         if new_opts.empty?
           self

spec/grape_entity/entity_spec.rb

@@ -1771,17 +1771,19 @@ class UserEntity < Grape::Entity
     describe Grape::Entity::Options do
       module EntitySpec
         class Crystalline
-          attr_accessor :prop1, :prop2
+          attr_accessor :prop1, :prop2, :prop3
 
           def initialize
             @prop1 = 'value1'
             @prop2 = 'value2'
+            @prop3 = 'value3'
           end
         end
 
         class CrystallineEntity < Grape::Entity
           expose :prop1, if: ->(_, options) { options.fetch(:signal) }
           expose :prop2, if: ->(_, options) { options.fetch(:beam, 'destructive') == 'destructive' }
+          expose :prop3, if: ->(_, options) { options.dig(:first, :second) == :nested }
         end
       end
 
@@ -1800,6 +1802,18 @@ class CrystallineEntity < Grape::Entity
           expect(crystalline_entity.as_json).to eq(prop1: 'value1')
         end
       end
+
+      context '#dig' do
+        it 'without passing in a expected option hide the value' do
+          crystalline_entity = EntitySpec::CrystallineEntity.represent(EntitySpec::Crystalline.new, signal: true, first: { invalid: :nested })
+          expect(crystalline_entity.as_json).to eq(prop1: 'value1', prop2: 'value2')
+        end
+
+        it 'passing in a expected option will expose the values' do
+          crystalline_entity = EntitySpec::CrystallineEntity.represent(EntitySpec::Crystalline.new, signal: true, first: { second: :nested })
+          expect(crystalline_entity.as_json).to eq(prop1: 'value1', prop2: 'value2', prop3: 'value3')
+        end
+      end
     end
   end
 end