Rails - Apr 2006 - check_box

I''ve got a question on the use of check_box.

***
This is working but there just has to be a better way:

RHTML:
<% for book in @books do %>
  <tr>
    <td><%=book.label%></td>
    <td>
      <%checked = book.subscribed ? ''checked'':
''nope''%>
      <%=check_box("book" + book.id.to_s,
''checked'', :checked => checked)%>
    </td>
  </tr>
<% end %>

RB:
params["book" + book.id.to_s][''checked'']

**
I would much rather have something like this in the RHTML:
<% for book in @books do %>
  <tr>
    <td><%=book.label%></td>
    <td>
      <%=check_box(''book'',
''subscribed'')%>
    </td>
  </tr>
<% end %>

The issue I run into though is that the naming convention ends up
being the same for all of my books (since I am referring to them as
"book" when the check_box is created.

something like: <%=check_box(''book.label'',
''subscribed''%> results in
errors as well...

Like I said, the first block if working for me but... let me know of
any alternatives.

Thanks in advance
- Jim

I would do something like

check_box_tag(''books['' + book.id.to_s +
''][subscribed]'', ''whatever'',
book.subscribed)

But I''m relatively new so that might not be the best way.

This will results in hash that looks like

params[:books][0][:subscribed] => ''whatever''

if checked

-----Original Message-----
From: rails-bounces@lists.rubyonrails.org
[mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Jim Halberg
Sent: Monday, April 17, 2006 6:09 PM
To: rails@lists.rubyonrails.org
Subject: [Rails] check_box

I''ve got a question on the use of check_box.

***
This is working but there just has to be a better way:

RHTML:
<% for book in @books do %>
  <tr>
    <td><%=book.label%></td>
    <td>
      <%checked = book.subscribed ? ''checked'':
''nope''%>
      <%=check_box("book" + book.id.to_s,
''checked'', :checked => checked)%>
    </td>
  </tr>
<% end %>

RB:
params["book" + book.id.to_s][''checked'']

**
I would much rather have something like this in the RHTML:
<% for book in @books do %>
  <tr>
    <td><%=book.label%></td>
    <td>
      <%=check_box(''book'',
''subscribed'')%>
    </td>
  </tr>
<% end %>

The issue I run into though is that the naming convention ends up
being the same for all of my books (since I am referring to them as
"book" when the check_box is created.

something like: <%=check_box(''book.label'',
''subscribed''%> results in
errors as well...

Like I said, the first block if working for me but... let me know of
any alternatives.

Thanks in advance
- Jim
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Jim,

You can pass an :index parameter to the check_box method (and
text_field, and probably a few others) like this:

check_box :mycollection, :available, :index => "1"

which outputs html like this:

<input id="mycollection_1_available"
name="mycollection[1][available]"
type="checkbox" value="1" />

So you can easily iterate through this just by getting the indexes you
expect on the other side. Remember that the index will always be a
string in the params hash though...

HTH,
Dan