Trying to accomplish something similar to Checkbox Adds with HABTM
utilizing a :through association so I can have a model in the middle.
It does not want to play nice.
MODELS
---------------------------
in models/project.rb
---------------------------
has_many :assignments, :dependent => true
has_many :users, :through => :assignments
---------------------------
in models/user.rb
---------------------------
has_many :assignments, :dependent => true
has_many :projects, :through => :assignments
---------------------------
in models/assignment.rb
---------------------------
belongs_to :user
belongs_to :project
VIEW
-------------------------------
In views/projects/_form.rhtml:
-------------------------------
<ul>
<% User.find(:all, :order => "last_name ASC").each do |g| %>
<li><%= check_box_tag ''assignment[user_ids][]'',
g.id,
@project.users.include?(g) %> <%= g.first_name %> <%= g.last_name
%></li>
<% end %>
</ul>
CONTROLLER
---------------------------------------
in controllers/projects_controller.rb
---------------------------------------
def update
@project = Project.new(params[:project])
user = User.find(params["user"].to_i)
assignment = Assignment.new
@project.assignments << assignment
user.assignments << assignment
assignment.save
if @project.update_attributes(params[:project])
flash[:notice] = ''Project was successfully updated.''
redirect_to :action => ''show'', :id => @project
# raise params.inspect
else
render :action => ''edit''
end
end
The _form renders fine, and on commit i get
------------------------------------------------------------
ActiveRecord::RecordNotFound in ProjectsController#update
------------------------------------------------------------
Couldn''t find User with ID=0
RAILS_ROOT: script/../config/..
Application Trace | Framework Trace | Full Trace
vendor/rails/activerecord/lib/active_record/base.rb:1028:in `find_one''
vendor/rails/activerecord/lib/active_record/base.rb:1011:in
`find_from_ids''
vendor/rails/activerecord/lib/active_record/base.rb:416:in `find''
app/controllers/projects_controller.rb:71:in `update''
Request
Parameters:
{"commit"=>"Edit",
"assignment"=>{"user_ids"=>["3"]},
"project"=>{"duedate(1i)"=>"2006",
"name"=>"Test Project",
"duedate(2i)"=>"11",
"duedate(3i)"=>"20",
"number"=>"611098",
"startdate(1i)"=>"2006",
"startdate(2i)"=>"11",
"startdate(3i)"=>"18",
"closed"=>"0",
"archived"=>"0",
"description"=>"Some work to do",
"thisweek"=>"Get it done."},
"id"=>"2"}
Show session dump
Response
Headers:
{"cookie"=>[],
"Cache-Control"=>"no-cache"}
html | txt
I also tried ''project[user_ids][]'' in the check_box_tag, but
that
renders an error of
undefined method `user_ids='' for #<project:0x32ab9c8>
Any thoughts on how I can improve this? Appreciate any feedback.
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