fix: render template according to request format

lib/grape-rabl/formatter.rb

@@ -13,7 +13,7 @@ def call(object, env)
 
           if rablable?
             rabl do |template|
-              engine = ::Tilt.new(view_path(template))
+              engine = ::Tilt.new(view_path(template), {format: env['api.format']})
               engine.render endpoint, {}
             end
           else

spec/grape_rabl_xml_spec.rb

@@ -0,0 +1,44 @@
+require 'spec_helper'
+
+describe Grape::Rabl do
+  subject do
+    Class.new(Grape::API)
+  end
+
+  before do
+    subject.format :xml
+    subject.formatter :xml, Grape::Formatter::Rabl
+  end
+
+  def app
+    subject
+  end
+
+  context "with xml format"  do
+    before do
+      subject.before {
+        env["api.tilt.root"] = "#{File.dirname(__FILE__)}/views"
+        env["api.format"] = :xml
+      }
+    end
+
+    it "should respond with proper content-type" do
+      subject.get("/home", :rabl => "user"){}
+      get("/home")
+      last_response.headers["Content-Type"].should == "application/xml"
+    end
+
+    ["user", "user.rabl"].each do |rabl_option|
+      it "should render rabl template (#{rabl_option})" do
+        subject.get("/home", :rabl => rabl_option) do
+          @user = OpenStruct.new(:name => "LTe", :email => "email@example.com")
+          @project = OpenStruct.new(:name => "First")
+        end
+
+        get "/home"
+
+        last_response.body.should == %Q{<?xml version="1.0" encoding="UTF-8"?>\n<user>\n  <name>LTe</name>\n  <email>email@example.com</email>\n  <project>\n    <name>First</name>\n  </project>\n</user>\n}
+      end
+    end
+  end
+end

spec/spec_helper.rb

@@ -4,6 +4,7 @@
 require 'bundler'
 Bundler.setup :default, :test
 
+require "active_support/core_ext/hash/conversions.rb"
 require 'grape/rabl'
 require 'rspec'
 require 'rack/test'