ActiveModel::MassAssignmentSecurity::Error in HomeworksController#create

[Brainstorm00]

Hi everybody,

I have this error when I try to create something with my new activity

Can't mass-assign protected attributes: author_id, user_author_id, owner_id
Rails.root: /Users/project/social_stream-started

Application Trace | Framework Trace | Full Trace
Request

Parameters:

{"utf8"=>"✓",
"authenticity_token"=>"wb37v0nNpMb3dVu3EEPKt3IDdnxXoYhUM9HwzSDdvyk=",
"homework"=>{"type"=>"1",
"activity_object_id"=>"1",
"file_file_name"=>"1",
"file_content_type"=>"1",
"file_file_size"=>"1",
"file_processing"=>"0"},
"commit"=>"Create Homework"}

what does it wants ? :D

[abelard2008]

I am not sure some one will meet the same question as mine. After I run "rails g scaffold Xoxo ...", some other steps as described in How to add new activity objects and access "http://127.0.0.1/xoxos/new", I got the above error. The resolution is simple: Delete models/xoxo.rb's one line with "attire_accessible" like:

attr_accessible :draft, :json, :title