How to do HABTM management with auto completion in Rails?

问题

I am looking for a good solution for a probably typical problem of managing models with HABTM association in Rails.

Let's assume that we have two models -- products and categories:

Products
  has_many :categorizations
  has_many :categories, :through => :categorizations
Categories
  has_many :categorizations
  has_many :products, :through => :categorizations
Categorization
  belongs_to :product
  belongs_to :category

Pat Shaughnessy is developing modified auto_complete plugin which can allow to manage one-to-many (and many-to-many) association:

alt text http://img28.imageshack.us/img28/9141/samplef.th.png alt text http://img406.imageshack.us/img406/4075/sampleautocomplete.th.png

For someone that would be enough, but I don't really like so many text fields. I guess it is possible to combine the Ryan Bates' screencasts used by Pat in a slightly different way, namely, using one text field with autocomplete:

alt text http://img405.imageshack.us/img405/9576/betterautocomplete.th.png

Also it would be better to remove from the list of suggested tasks (one-to-many), or products|categories (many-to-many) those which have been already added.

In the case of products-categories relationship, such auto completion would be used both in the form for product, and in the form for category.

I hope that there is an existing plugin for that. I am not very experienced in Ruby, and don't really know how to implement such logic by myself.

Any help is appreciated!

回答1:

The problem is nicely solved using jQuery Tokeninput plugin, as shown by Ryan Bates: http://railscasts.com/episodes/258-token-fields

回答2:

I also need a similar. but so far I found two plugins for jQuery.

The "Tagger" chrisiufer.com/tagger, but without autocomplete function.
And "Advanced Uses of Auto Complete" http://education.llnl.gov/jquery/adv_auto.lasso

It would be cool if someone could remake it for the Ruby on Rails. :) If you have a ready solution, please put the code!

回答3:

Maybe the model_auto_completer will help.

http://agilewebdevelopment.com/plugins/model_auto_completer

来源：https://stackoverflow.com/questions/1510935/how-to-do-habtm-management-with-auto-completion-in-rails

标签

ruby-on-rails

autocomplete

associations