Update controllers_helper

* Update controllers_helper.md
* Update controllers_helper.rb
* Update controllers_helper_spec.rb

Author: m5o

controllers_helper.md

@@ -9,6 +9,10 @@ Rails controller and action helper for views
 
 ## Usage
 
+```ruby
+namespace?("admin")
+```
+
 ```ruby
 controller?("contents", "users")
 ```

tools/controllers_helper.rb

@@ -1,6 +1,10 @@
 # encoding: UTF-8
 module ControllersHelper
 
+  def namespace?(*controller)
+    controller.include?(params[:controller].split('/').first)
+  end
+
   # TODO proof if this can be optimized with current_page?
   # http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-current_page-3F
   def controller?(*controller)

tools/controllers_helper_spec.rb

@@ -3,18 +3,40 @@
 
 describe ControllersHelper do
 
+  describe "#namespace?" do
+    before do
+      allow(helper).to receive(:params).and_return(controller: "admin/contents")
+    end
+
+    it "returns true if match" do
+      expect(helper.namespace?("admin")).to be true
+    end
+
+    it "returns true if match any" do
+      expect(helper.namespace?("admin", "application")).to be true
+    end
+
+    it "returns false if didn't match" do
+      expect(helper.namespace?("application")).to be false
+    end
+  end
+
   describe "#controller?" do
     before do
       allow(helper).to receive(:params).and_return(controller: "contents")
     end
 
-    it "returns true if contoller match" do
+    it "returns true if match" do
       expect(helper.controller?("contents")).to be true
     end
 
     it "returns true if match any" do
       expect(helper.controller?("contents", "users")).to be true
     end
+
+    it "returns false if didn't match any" do
+      expect(helper.controller?("application", "users")).to be false
+    end
   end
 
 
@@ -23,11 +45,15 @@
       allow(helper).to receive(:params).and_return(action: "index")
     end
 
-    it "returns true if action match" do
+    it "returns true if match" do
       expect(helper.action?("index")).to be true
     end
 
-    it "returns false if action didn't match" do
+    it "returns true if match any" do
+      expect(helper.action?("index", "new")).to be true
+    end
+
+    it "returns false if didn't match" do
       expect(helper.action?("new")).to be false
     end
   end