diff --git a/app/models/problem.rb b/app/models/problem.rb
--- a/app/models/problem.rb
+++ b/app/models/problem.rb
@@ -9,4 +9,68 @@
     find(:all, :conditions => {:available => true}, :order => "date_added DESC")
   end
 
+  def self.new_from_import_form_params(params)
+    problem = Problem.new
+
+    # form error checking
+
+    time_limit_s = params[:time_limit]
+    memory_limit_s = params[:memory_limit]
+
+    time_limit_s = '1' if time_limit_s==''
+    memory_limit_s = '32' if memory_limit_s==''
+
+    time_limit = time_limit_s.to_i
+    memory_limit = memory_limit_s.to_i
+
+    if time_limit==0 and time_limit_s!='0'
+      problem.errors.add_to_base('Time limit format errors.')
+    elsif time_limit<=0 or time_limit >60
+      problem.errors.add_to_base('Time limit out of range.')
+    end
+
+    if memory_limit==0 and memory_limit_s!='0'
+      problem.errors.add_to_base('Memory limit format errors.')
+    elsif memory_limit<=0 or memory_limit >512
+      problem.errors.add_to_base('Memory limit out of range.')
+    end
+
+    if params[:file]==nil or params[:file]==''
+      problem.errors.add_to_base('No testdata file.')
+    end
+
+    file = params[:file]
+
+    if problem.errors.length!=0
+      return problem
+    end
+
+    problem.name = params[:name]
+    if params[:full_name]!=''
+      problem.full_name = params[:full_name]
+    else
+      problem.full_name = params[:name]
+    end
+
+    if not problem.valid?
+      return problem
+    end
+
+    importer = TestdataImporter.new
+
+    if not importer.import_from_file(problem.name, 
+                                             file, 
+                                             time_limit, 
+                                             memory_limit)
+      problem.errors.add_to_base('Import error.')
+    end
+
+    problem.full_score = 100
+    problem.date_added = Time.new
+    problem.test_allowed = true
+    problem.output_only = false
+    problem.available = false
+    return problem, importer.log_msg
+  end
+
 end