Extract if check into method

lib/hypermodel/representation.rb

@@ -26,31 +26,28 @@ def self.attributes(*attributes)
 
     def links
       @@links.inject({self: context.polymorphic_url(record)}) do |links, (name, options, block)|
-        if (options[:if] && options[:if].call(record, context)) || options[:if] == nil
-          value = if block
-            block.call(record, context)
-          else
-            context.polymorphic_url(record.send(name))
-          end
-          links.update(name => value)
+        next links if should_skip(options)
+
+        link = if block
+          block.call(record, context)
         else
-          links
+          context.polymorphic_url(record.send(name))
         end
+
+        links.update(name => link)
       end
     end
 
     def embedded
       @@embeds.inject({}) do |embedded, (name, options, block)|
-        if (options[:if] && options[:if].call(record, context)) || options[:if] == nil
-          value = if block
-            block.call(record, context)
-          else
-            record.send(name)
-          end
-          embedded.update(name => value)
+        next embedded if should_skip(options)
+
+        value = if block
+          block.call(record, context)
         else
-          embedded
+          record.send(name)
         end
+        embedded.update(name => value)
       end
     end
 
@@ -59,5 +56,13 @@ def attributes
         @@selected_attributes.include? attribute
       end
     end
+
+    private
+    def should_skip(options)
+      return false unless options.include? :if
+      return false if options[:if] == nil
+
+      !options[:if].call(record, context)
+    end
   end
 end