Template.subview expects a view instance instead of a template and params hash.

spec/stdlib/template-spec.coffee

@@ -16,7 +16,7 @@ describe "Template", ->
           @div =>
             @h1 attrs.title
             @list()
-            @subview 'subview', subviewTemplate, title: "Subview"
+            @subview 'subview', subviewTemplate.build(title: "Subview")
 
         list: ->
           @ol =>

spec/stdlib/template/builder-spec.coffee

@@ -53,7 +53,7 @@ describe "Builder", ->
     it "inserts a view built from the given template with the given params", ->
       builder.tag 'div', ->
         builder.tag 'h1', "Superview"
-        builder.subview 'sub', template, title: "Subview"
+        builder.subview 'sub', template.build(title: "Subview")
 
       fragment = builder.toFragment()
       expect(fragment.find("h1:contains(Superview)")).toExist()

src/stdlib/template/builder.coffee

@@ -41,11 +41,10 @@ class Builder
       @text(options.text) if options.text
       @document.push(new CloseTag(name))
 
-  subview: (outletName, template, params) ->
+  subview: (outletName, subview) ->
     subviewId = _.uniqueId('subview')
     @tag 'div', id: subviewId
     @postProcessingFns.push (view) ->
-      subview = template.build(params)
       subview.attr('outlet', outletName)
       view.find("div##{subviewId}").replaceWith(subview)