Hey All,
I'm trying to use the railscasts ep 75 approach to including multiple models on a single form, by using fields_for to load up a pseudoattribute. My 'parent' model is a Project, and the 'child' is a ProjectPerson. It works fine when I'm editing an existing project, but when I'm creating a new project, I get a validation error for each ProjectPerson: "Project can't be blank". I'm guessing that means that the project's id is not getting copied over to the ProjectPerson's project_id, but I'm not sure how to make that happen. I expected it to happen automatically (shouldn't it?), but even if I try to do it myself explicitly (see below) it doesn't seem to work. I'm using rails v2.0.2.
Here is an example of the parameters that my projects/new form hands to the projects/create action:
Parameters: {"commit"=>"Create" , "project"=> {"name"=>"Roys Cool Project" , "abbreviation"=>"RCP" , "funding_mechanism"=>"" , "new_research_area_attributes"=>[{"research_area_id"=>""}] , "grant_number"=>"" , "id"=>"" , "new_project_person_attributes"=>[{"role"=>"Programmer", "person_id"=>"9"}] , "description"=>"" , "status_id"=>"2" , "funder_id"=>"" , "start_date(1i)"=>"" , "start_date(2i)"=>"" , "start_date(3i)"=>"" , "end_date(1i)"=>"" , "end_date(2i)"=>"" , "end_date(3i)"=>""} , "#<ProjectPerson:0x4ad1494>"=>{"role"=>"Programmer"} , "authenticity_token"=>"08f382d5ec07eecec7cd229ce67664094516ed26" , "action"=>"create" , "#<ProjectPerson:0x4ad6a70>"=>{"role"=>"Programmer"} , "controller"=>"projects" , "name_search"=>"r"}
Projects/create is scaffold-written--it just does a
@project = Project.new(params[:project]) respond_to do |format| if @project.save flash[:notice] = 'Project was successfully created.' <<etc.>>
The relevant bits of the project model are:
class Project < ActiveRecord::Base has_many :project_person, :dependent => :delete_all after_update :save_personnell def new_project_person_attributes=(personnell) personnell.each do |person| project_person.build(person) end end def save_personnell # raise("boobies!") project_person.each do |p| p.project_id = id # <-- no effect! p.save(false) end end end # class Project Can any of you kind folks advise on how I can fix (or further debug) this problem?
Thanks!
-Roy
Roy Pardee Research Analyst/Programmer Group Health Center For Health Studies (Cancer Research Network) (206) 287-2078 Google Talk: rpardee
