Hi,
I’m really struggling to understand how to get checkboxes to work on a
list of objects. Essentially I have this:
- An Issue model which has_many articles
- An Article model which belongs to issue
So, I am pulling up a list of articles, all that are of type ‘ready’ and
either have an issue_id of 0 or article.issue_id == issue.id
I want to have a check box after each in the table. It will be checked
if you wish add the article to the current issue and unchecked if you
wish to set the issue_id for the article to 0 and not include it.
How in the blue blazes of hell do I do this with action view? The
‘form_for’ helper only seems to refer to on object not a collection.
On page 498 of ‘Agile Web D. with Rails’ there’s a section
about ‘Forms Containing Collections’ which implies you can use a text
field easily enough and this code works, adding an id into each text
field’s ID. However, doing the same thing with ‘check_box_tag’ fails
brutally (maybe I don’t understand this tag).
So I tried with ‘check_box’ but all this does is give me an error like
this:
undefined method `delete’ for 1:Fixnum
referencing the ‘check_box’ tag. I don’t have ‘delete’ anywhere in my
code.
I have tried to look over this:
http://wiki.rubyonrails.org/rails/pages/CheckboxHABTM but there is
querying of the database in the rhtml code, which seems wrong and not
something I’m entirely sure I can easily achieve.
Can someone give me a clear and easy way to do this sort of checkbox
use? Surely this has got to be one of the most basic uses of a checkbox
in code yet it seems hard to find something about?
Any help will be appreciated, even if it’s just a ‘DURR!’ and a link to
a very clear code example.
Thanks muchly,
Theo
