lib/jsonapi/include_directives.rb in jsonapi-resources-0.8.3 vs lib/jsonapi/include_directives.rb in jsonapi-resources-0.9.0.beta1

@@ -34,10 +34,14 @@
 
     def model_includes
       get_includes(@include_directives_hash)
     end
 
+    def paths
+      delve_paths(get_includes(@include_directives_hash, false))
+    end
+
     private
 
     def get_related(current_path)
       current = @include_directives_hash
       current_resource_klass = @resource_klass
@@ -57,13 +61,16 @@
         current = current[:include_related][fragment]
       end
       current
     end
 
-    def get_includes(directive)
-      directive[:include_related].select { |k,v| v[:include_in_join] }.map do |name, directive|
-        sub = get_includes(directive)
+    def get_includes(directive, only_joined_includes = true)
+      ir = directive[:include_related]
+      ir = ir.select { |k,v| v[:include_in_join] } if only_joined_includes
+
+      ir.map do |name, sub_directive|
+        sub = get_includes(sub_directive, only_joined_includes)
         sub.any? ? { name => sub } : name
       end
     end
 
     def parse_include(include)
@@ -72,9 +79,22 @@
 
       parts.each do |name|
         local_path += local_path.length > 0 ? ".#{name}" : name
         related = get_related(local_path)
         related[:include] = true
+      end
+    end
+
+    def delve_paths(obj)
+      case obj
+        when Array
+          obj.map{|elem| delve_paths(elem)}.flatten(1)
+        when Hash
+          obj.map{|k,v| [[k]] + delve_paths(v).map{|path| [k] + path } }.flatten(1)
+        when Symbol, String
+          [[obj]]
+        else
+          raise "delve_paths cannot descend into #{obj.class.name}"
       end
     end
   end
 end