Rails - May 2007 - Help with Create and Update with options_for_select in a select_tag

I have a  select_tag in my view that uses options_for_select with
multiple = true. I am having trouble figuring out the Rails way to
create and update that field. Please help.

Models:
-------------
Service has_many AccessControl
AccessControl belongs_to Service

application.rb
-------------------------
$types = Array["Athens", "htpasswd", "IP",  
"None",  "Other",
"Password", "Shibboleth"]

View:
---------------
<% if @service.access_controls
    @types = @service.access_controls.collect{|a| a.value}.join(''
'')
end %>
<label for="access_control_value"><span class =
"required">*</
span>Access Control:</label>
<%=select_tag ''access_control[]'',
    options_for_select($types,  ''@types''), {:multiple =>
true, :size
=> 5, :id => "access_control_value",
    :onfocus=>"fixedtooltip(CONTROL_MSSG, this, event,
'''')", :onblur=>"delayhidetip()"}%>
<%= error_message_on :service, :access_controls %><br />

Controller
--------------
#create works but is this the best way?
def create
.....
if params[:access_control]
        params[:access_control].each do |value|
        control = AccessControl.new
        control.value = value
        control.service_id = @service.id
        control.save
        @service.access_controls << control
      end
    end
....
end

def update
  ??? I have no idea how to update the access_controls fields
end

Thanks in advance, K


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Hey Kim, what you can do:

HTML:

<select name="parties[]" multiple size="3" >
    <% for party in @parties %>
          <option value="<%= party.id %>"><%=
party.name %></option>
     <% end %>
</select>

The Rails Way:

select( "party", "id", Party.find(:all).collect {|p| [
p.name, p.id ]
}, { :multiple => true, :size => 3 } )


Good luck,

-Conrad


On 5/24/07, Kim <Kim.Griggs-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
>
> I have a  select_tag in my view that uses options_for_select with
> multiple = true. I am having trouble figuring out the Rails way to
> create and update that field. Please help.
>
> Models:
> -------------
> Service has_many AccessControl
> AccessControl belongs_to Service
>
> application.rb
> -------------------------
> $types = Array["Athens", "htpasswd", "IP",  
"None",  "Other",
> "Password", "Shibboleth"]
>
> View:
> ---------------
> <% if @service.access_controls
>     @types = @service.access_controls.collect{|a| a.value}.join(''
'')
> end %>
> <label for="access_control_value"><span class =
"required">*</
> span>Access Control:</label>
> <%=select_tag ''access_control[]'',
>     options_for_select($types,  ''@types''), {:multiple
=> true, :size
> => 5, :id => "access_control_value",
>     :onfocus=>"fixedtooltip(CONTROL_MSSG, this, event,
> '''')", :onblur=>"delayhidetip()"}%>
> <%= error_message_on :service, :access_controls %><br />
>
> Controller
> --------------
> #create works but is this the best way?
> def create
> .....
> if params[:access_control]
>         params[:access_control].each do |value|
>         control = AccessControl.new
>         control.value = value
>         control.service_id = @service.id
>         control.save
>         @service.access_controls << control
>       end
>     end
> ....
> end
>
> def update
>   ??? I have no idea how to update the access_controls fields
> end
>
> Thanks in advance, K
>
>
> >
>
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Hi Conrad,
Thanks, but no, that will not work.

First:
 select( "party", "id", Party.find(:all).collect {|p| [
p.name,
p.id ]}, { :multiple => true, :size => 3 } )

select can not do a multiple select. Yes you can put :multiple => true
in it, and in the UI it will look like it is multi-selecting things,
but it actual does not send more then one thing in the params hash.
Disagree? Prove me wrong.

Second:
I have seen plenty of code examples for doing this when the options
are coming from a database (just like your example), but if you look
at my post, you will see that I do not have that case. I have a hash
of static options, not options from a database.

Thanks anyways.

Any other ideas? K


On May 24, 4:45 pm, "Conrad Taylor"
<conra...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Hey Kim, what you can do:
>
> HTML:
>
> <select name="parties[]" multiple size="3" >
>     <% for party in @parties %>
>           <option value="<%= party.id %>"><%=
party.name %></option>
>      <% end %>
> </select>
>
> The Rails Way:
>
> select( "party", "id", Party.find(:all).collect {|p| [
p.name, p.id ]
>
> }, { :multiple => true, :size => 3 } )
>
> Good luck,
>
> -Conrad
>
> On 5/24/07, Kim <Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
>
>
> > I have a  select_tag in my view that uses options_for_select with
> > multiple = true. I am having trouble figuring out the Rails way to
> > create and update that field. Please help.
>
> > Models:
> > -------------
> > Service has_many AccessControl
> > AccessControl belongs_to Service
>
> > application.rb
> > -------------------------
> > $types = Array["Athens", "htpasswd",
"IP",   "None",  "Other",
> > "Password", "Shibboleth"]
>
> > View:
> > ---------------
> > <% if @service.access_controls
> >     @types = @service.access_controls.collect{|a|
a.value}.join('' '')
> > end %>
> > <label for="access_control_value"><span class =
"required">*</
> > span>Access Control:</label>
> > <%=select_tag ''access_control[]'',
> >     options_for_select($types,  ''@types''),
{:multiple => true, :size
> > => 5, :id => "access_control_value",
> >     :onfocus=>"fixedtooltip(CONTROL_MSSG, this, event,
> > '''')",
:onblur=>"delayhidetip()"}%>
> > <%= error_message_on :service, :access_controls %><br />
>
> > Controller
> > --------------
> > #create works but is this the best way?
> > def create
> > .....
> > if params[:access_control]
> >         params[:access_control].each do |value|
> >         control = AccessControl.new
> >         control.value = value
> >         control.service_id = @service.id
> >         control.save
> >         @service.access_controls << control
> >       end
> >     end
> > ....
> > end
>
> > def update
> >   ??? I have no idea how to update the access_controls fields
> > end
>
>> Thanks in advance, K

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I have not been able to find any examples. Anyone know how to do this?

On May 24, 5:02 pm, Kim
<Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Hi Conrad,
> Thanks, but no, that will not work.
>
> First:
>  select( "party", "id", Party.find(:all).collect {|p| [
p.name,
> p.id ]}, { :multiple => true, :size => 3 } )
>
> select can not do a multiple select. Yes you can put :multiple => true
> in it, and in the UI it will look like it is multi-selecting things,
> but it actual does not send more then one thing in the params hash.
> Disagree? Prove me wrong.
>
> Second:
> I have seen plenty of code examples for doing this when the options
> are coming from a database (just like your example), but if you look
> at my post, you will see that I do not have that case. I have a hash
> of static options, not options from a database.
>
> Thanks anyways.
>
> Any other ideas? K
>
> On May 24, 4:45 pm, "Conrad Taylor"
<conra...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > Hey Kim, what you can do:
>
> > HTML:
>
> > <select name="parties[]" multiple size="3" >
> >     <% for party in @parties %>
> >           <option value="<%= party.id %>"><%=
party.name %></option>
> >      <% end %>
> > </select>
>
> > The Rails Way:
>
> > select( "party", "id", Party.find(:all).collect
{|p| [ p.name, p.id ]
>
> > }, { :multiple => true, :size => 3 } )
>
> > Good luck,
>
> > -Conrad
>
> > On 5/24/07, Kim
<Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > > I have a  select_tag in my view that uses options_for_select with
> > > multiple = true. I am having trouble figuring out the Rails way
to
> > > create and update that field. Please help.
>
> > > Models:
> > > -------------
> > > Service has_many AccessControl
> > > AccessControl belongs_to Service
>
> > > application.rb
> > > -------------------------
> > > $types = Array["Athens", "htpasswd",
"IP",   "None",  "Other",
> > > "Password", "Shibboleth"]
>
> > > View:
> > > ---------------
> > > <% if @service.access_controls
> > >     @types = @service.access_controls.collect{|a|
a.value}.join('' '')
> > > end %>
> > > <label for="access_control_value"><span class
= "required">*</
> > > span>Access Control:</label>
> > > <%=select_tag ''access_control[]'',
> > >     options_for_select($types,  ''@types''),
{:multiple => true, :size
> > > => 5, :id => "access_control_value",
> > >     :onfocus=>"fixedtooltip(CONTROL_MSSG, this, event,
> > > '''')",
:onblur=>"delayhidetip()"}%>
> > > <%= error_message_on :service, :access_controls %><br
/>
>
> > > Controller
> > > --------------
> > > #create works but is this the best way?
> > > def create
> > > .....
> > > if params[:access_control]
> > >         params[:access_control].each do |value|
> > >         control = AccessControl.new
> > >         control.value = value
> > >         control.service_id = @service.id
> > >         control.save
> > >         @service.access_controls << control
> > >       end
> > >     end
> > > ....
> > > end
>
> > > def update
> > >   ??? I have no idea how to update the access_controls fields
> > > end
>
> >> Thanks in advance, K

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