Has_and_belongs_to_many form with check_box


I have 2 models, user and project.
When I edit my profile I wan't to check the projects I wan't to follow.
So here is my code:

<% form_for @user do |f| %>
  <% for project in @projects %>
    <% fields_for "user[project_attributes][]", project do

project_form| %>

        <%= project_form.check_box "checked", {:checked =>
@user.project_ids.include?(project.id)} %><label><%= project.name
    <% end %>
  <% end %>
<% end %>

I think the form is correct but the model and controller part is not
very clear...

Here is the log:
"2"=>{"checked"=>"1"}, "3"=>{"checked"=>"0"}, "4"=>{"checked"=>"0"},
"5"=>{"checked"=>"0"}}, "password_confirmation"=>"[FILTERED]",

The project_attributes is really messy and I have to parse the hash to
get selected projects.

There must be a cleaner way??


You seen this?


Seems like you would want to use something like:

except you would be like @user.projects.include?(project)