Support building dynamic attributes at runtime (Buffer#attributes())

opal · Dec 4, 2013 · 4d1296f · 4d1296f
1 parent 25695ed
commit 4d1296f
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/opal/opal-haml.rb b/opal/opal-haml.rb
@@ -7,5 +7,26 @@ def buffer
     end
 
     alias << append
+
+    # allow tags in haml to have dynamic attributes
+    def attributes(class_id, obj_ref, *attributes_hashes)
+      attributes = class_id
+
+      attributes_hashes.each do |hash|
+        attributes.update hash
+      end
+
+      result = attributes.collect do |attr, value|
+        if value == true
+          next " #{attr}"
+        elsif value == false
+          next
+        else
+          " #{attr}='#{value}'"
+        end
+      end
+
+      result.join
+    end
   end
 end