selecting line items

rubyonrails-talk
1

I'm using check_box but I'm not married to it, probably because I don't understand it. Basically, I am presenting a list of upcoming payments and I want to select which items are to be paid...

<% form_for :supptrans, @supptrans, :url => { :action => "accept_checks" } do |form| %> <% odd_or_even = 0   for check_due in @supptrans   odd_or_even = 1 - odd_or_even %>   <tr valign="top" class="ListLine<%= odd_or_even %>">     <td><%= check_box("check_due", "print_check") %></td>     <td><%=h (check_due.supplier.suppname) %></td>     <td><%=h (check_due.suppreference) %></td>     <td><%= check_due.duedate.to_s.split('-')[1].to_s +         "-" + check_due.duedate.to_s.split('-')[2].to_s +         "-" + check_due.duedate.to_s.split('-')[0].to_s %></td>     <td align="right"><%= check_due.ovamount.to_fl(2) %></td>   </tr> <% end %> <%= submit_tag 'Print Checks' %><% end %>

and when I checked 3 different boxes, I see in a <%= debug params %> only the first line item is returned...

--- !map:HashWithIndifferentAccess check_due: !map:HashWithIndifferentAccess   print_check: "0" commit: Print Checks authenticity_token: HqDnPuefppjsMYQhZwAq0akBrQTfnvIKrHciv81aKe0= action: accept_checks controller: payables

and it returns a value of '0' because it was unchecked.

I was hoping that it would return each line item that was checked or all of the line items and I could loop through them and discard the unchecked items but I only get the first value, nothing else.

How can I accomplish this?

Craig

2

I'm using check_box but I'm not married to it, probably because I don't understand it. Basically, I am presenting a list of upcoming payments and I want to select which items are to be paid...

<% form_for :supptrans, @supptrans, :url => { :action => "accept_checks" } do |form| %> <% odd_or_even = 0 for check_due in @supptrans odd_or_even = 1 - odd_or_even %>

Take a look at the cycle helper as an alternative to this

and it returns a value of '0' because it was unchecked.

I was hoping that it would return each line item that was checked or all of the line items and I could loop through them and discard the unchecked items but I only get the first value, nothing else.

You should use check_box_tag rather than check_box for this. Then it's all about giving your check boxes the right names and the right values: rather than the value submitted being 1 you want the value submitted to be the id of the item in question. If you give the check boxes the same name and that name ends in then rails will collect the submitted values into an array for you

I wrote a bit more about parameter names at

Fred

3

> I'm using check_box but I'm not married to it, probably because I don't > understand it. Basically, I am presenting a list of upcoming payments > and I want to select which items are to be paid... > > <% form_for :supptrans, @supptrans, > :url => { :action => "accept_checks" } do |form| %> > <% odd_or_even = 0 > for check_due in @supptrans > odd_or_even = 1 - odd_or_even > %>

Take a look at the cycle helper as an alternative to this