Allow desc or description to be used for parameter descriptions

Author: mzikherman

lib/grape/validations/params_scope.rb

@@ -97,7 +97,7 @@ def validates(attrs, validations)
         coerce_type = validations[:coerce]
         doc_attrs[:type] = coerce_type.to_s if coerce_type
 
-        desc = validations.delete(:desc)
+        desc = validations.delete(:desc) || validations.delete(:description)
         doc_attrs[:desc] = desc if desc
 
         default = validations[:default]

spec/grape/validations/params_scope_spec.rb

@@ -1,4 +1,28 @@
 require 'spec_helper'
+require 'pry'
 
 describe Grape::Validations::ParamsScope do
+  subject do
+    Class.new(Grape::API)
+  end
+
+  def app
+    subject
+  end
+
+  context 'setting description' do
+    [:desc, :description].each do |description_type|
+      it "allows setting #{description_type}" do
+        subject.params do
+          requires :int, type: Integer, description_type => 'My very nice integer'
+        end
+        subject.get '/single' do
+          'int works'
+        end
+        get '/single', int: 420
+        expect(last_response.status).to eq(200)
+        expect(last_response.body).to eq('int works')
+      end
+    end
+  end
 end