SubdomainFu#current_subdomain will no longer recognize mirrors (will …

…return nil instead). Included specs for this.

lib/subdomain-fu.rb

@@ -70,6 +70,15 @@ def self.same_subdomain?(subdomain, host)
     result
   end
 
+  def self.current_subdomain(request)
+    subdomain = request.subdomains(SubdomainFu.tld_size).join(".")
+    if has_subdomain?(subdomain)
+      subdomain
+    else
+      nil
+    end
+  end
+
   module Controller
     def self.included(controller)
       controller.helper_method(:current_subdomain)
@@ -78,7 +87,7 @@ def self.included(controller)
     protected
 
     def current_subdomain
-      request.subdomains(SubdomainFu.tld_size).join(".")
+      SubdomainFu.current_subdomain(request)
     end
   end
 end

spec/subdomain_fu_spec.rb

@@ -98,6 +98,28 @@
     end
   end
 
+  describe "#current_subdomain" do
+    it "should return the current subdomain if there is one" do
+      request = mock("request", :subdomains => ["awesome"])
+      SubdomainFu.current_subdomain(request).should == "awesome"
+    end
+
+    it "should return nil if there's no subdomain" do
+      request = mock("request", :subdomains => [])
+      SubdomainFu.current_subdomain(request).should be_nil
+    end
+
+    it "should return nil if the current subdomain is a mirror" do
+      request = mock("request", :subdomains => ["www"])
+      SubdomainFu.current_subdomain(request).should be_nil
+    end
+
+    it "should return the whole thing (including a .) if there's multiple subdomains" do
+      request = mock("request", :subdomains => ["awesome","rad"])
+      SubdomainFu.current_subdomain(request).should == "awesome.rad"
+    end
+  end
+
   describe "#same_subdomain?" do
     it { SubdomainFu.same_subdomain?("www","www.localhost").should be_true }
     it { SubdomainFu.same_subdomain?("www","localhost").should be_true }