Send list of variable size

Rails
1

I’m developing some sort of imdb (http://www.imdb.com) application for
CDs
to practice Ruby on Rails.
So a user should be able to upload information of a CD that’s not yet in
the
database. But I’m wondering what would be the possible ways to send
information like tracklists. It seems to me the easiest way is a form
with
an input box per track, but how let the user easily specify how many
boxes
he needs?

2

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With the Prototype javascript library you could do something like the
following:

  • <%= text_field_tag 'tracks[]' %>
    •

    <%= link_to_function ‘Add Another Track’, “new Insertion.Bottom
    (‘tracklist’, $(‘track_form’).innerHTML)” %>

    That would put a link on the under the tracklist that will add
    another form element each time it was clicked.

    On Nov 21, 2005, at 10:48 AM, Lieven De Keyzer wrote:

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    3

    When I click “Add Another Track” it doesn’t do anything with this code.

    4

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    I just tried it copy pasted and it worked fine.
    Are you sure the prototype library is being included?

    <%= javascript_include_tag ‘prototype’ %>

    should go in at the top of the page.

    On Nov 21, 2005, at 2:19 PM, Lieven De Keyzer wrote:

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    So a user should be able to upload information of a CD that’s

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    5

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    6

    That was indeed the problem. Sorry. I should start reading about this
    library I guess.