Rails - Aug 2005 - is it possible to create multiple records from one form and to get validation work ?

hi,

imagine a simple contact table with just one field labeled name...
nothing particular in the contact model just a simple validation like being 
sure the name is longer than 3 characteres

in the scaffold generated view to create a new record we have
<%= textfield ''contact'' ''name'' %>
and it works great to create one record

but, can i use <%= textfield ''contact''
''name'', :index => 1 %> ??

if i have <%= textfield ''contact'' ''name'',
:index => 1 %> <%= textfield
''contact'' ''name'', :index => 2 %> in my
view for instance, what has to be the
code in my controller to create these 2 contacts and is a validation on one 
phone will highlight the correct phone in the view??

thanks

olivier


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i have what you are talking about working for CREATE but not UPDATE yet....

if you are willing to wade through some code I can send you the relevant 
templates and controller to look at...

its a work in progress on my end so it''s ugly... let me know...

olivier Hericord wrote:
> hi,
>
> imagine a simple contact table with just one field labeled name...
> nothing particular in the contact model just a simple validation like 
> being sure the name is longer than 3 characteres
>
> in the scaffold generated view to create a new record we have
> <%= textfield ''contact'' ''name'' %>
> and it works great to create one record
>
> but, can i use <%= textfield ''contact''
''name'', :index => 1 %> ??
>
> if i have <%= textfield ''contact''
''name'', :index => 1 %> <%= textfield
> ''contact'' ''name'', :index => 2 %>
in my view for instance, what has to
> be the code in my controller to create these 2 contacts and is a 
> validation on one phone will highlight the correct phone in the view??
>
> thanks
>
> olivier
>
>------------------------------------------------------------------------
>
>_______________________________________________
>Rails mailing list
>Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
>http://lists.rubyonrails.org/mailman/listinfo/rails
>  
>


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olivier,

 <%= textfield ''contact'' ''name'', :index
=> 1 %>

will give you params[:contact][1][:name] in your action.  and so one
for each index above.  (:index => 1 MAY index to [0] but i dont think
so)

On 8/9/05, olivier Hericord
<olivier.hericord.lists-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> hi,
>  
>  imagine a simple contact table with just one field labeled name...
>  nothing particular in the contact model just a simple validation like
being
> sure the name is longer than 3 characteres
>  
>  in the scaffold generated view to create a new record we have
>  <%= textfield ''contact'' ''name''
%>
>  and it works great to create one record
>  
>  but, can i use <%= textfield ''contact''
''name'', :index => 1 %> ??
>  
>  if i have <%= textfield ''contact''
''name'', :index => 1 %> <%= textfield
> ''contact'' ''name'', :index => 2 %>
in my view for instance, what has to be the
> code in my controller to create these 2 contacts and is a validation on one
> phone will highlight the correct phone in the view??
>  
>  thanks
>  
>  olivier
>  
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
> 
> 
> 

-- 
Zachery Hostens <zacheryph-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

it seems that it''s gonna be a little more complex than just writing
<%=
textfield ''contact'' ''name'', :index => 1
%>, <%= textfield ''contact'' ''name'',
:index => 2 %> ....

i''m writing a little helper right now....once it''s finish i
will post them.

but i think my problem is a very common one: each time A has_many B
it''s
difficult to create many B while creating a new A (without using sessions 
and using just one view)

On 8/10/05, Zachery Hostens
<zacheryph-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> 
> olivier,
> 
> <%= textfield ''contact'' ''name'',
:index => 1 %>
> 
> will give you params[:contact][1][:name] in your action. and so one
> for each index above. (:index => 1 MAY index to [0] but i dont think
> so)
> 
> On 8/9/05, olivier Hericord
<olivier.hericord.lists-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > hi,
> >
> > imagine a simple contact table with just one field labeled name...
> > nothing particular in the contact model just a simple validation like 
> being
> > sure the name is longer than 3 characteres
> >
> > in the scaffold generated view to create a new record we have
> > <%= textfield ''contact'' ''name''
%>
> > and it works great to create one record
> >
> > but, can i use <%= textfield ''contact''
''name'', :index => 1 %> ??
> >
> > if i have <%= textfield ''contact''
''name'', :index => 1 %> <%= textfield
> > ''contact'' ''name'', :index => 2
%> in my view for instance, what has to be
> the
> > code in my controller to create these 2 contacts and is a validation
on
> one
> > phone will highlight the correct phone in the view??
> >
> > thanks
> >
> > olivier
> >
> > _______________________________________________
> > Rails mailing list
> > Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> > http://lists.rubyonrails.org/mailman/listinfo/rails
> >
> >
> >
> 
> 
> --
> Zachery Hostens <zacheryph-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

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I recommend using the render(:partial, :collection) process for this.
I have code like this, in my app:
<%= render(:partial => ''member'', :collection =>
@members) %>
(@members is an Array created in the controller.)

The partial form looks like this: (_member.rhtml)
<% @member = member %>
# Here we''re assigning the local ''member'' variable
created by the
# render(:partial) to an instance variable, which allows us to use the
# ''error_messages_for'' helper on it.
<!--[form:member]-->
<% if member.errors.count > 0 then -%>
<%= error_messages_for(''member'', :id =>
"errorExplanation#{member_counter}") %>
<% end -%>
# If you don''t need separate error messages for each item in the
collection, you
probably don''t need that.  I had to get a little trickier, since the
form has to
support a dynamic number of ''Member'' entries.

Further down in the partial form, I have stuff like this:
<%= text_field ''member'', ''first_name'',
''index'' => member_counter, ''maxlength''
=>
15, ''size'' => 15, ''class'' =>
''required''  %>

(Note that the syntax for ''select'' with an index is a little
funny:)
<%= select ''member'', ''sex_code'',
[[''Unknown'',''U''],
[''Male'',''M''],
[''Female'',''F'']], {},
{''index'' => member_counter, ''class'' =>
''required''} %>

Finally, here''s a snippet from the controller action that the form
''Submits'' to:
if params[:member] then
   @members = Array.new
   params[:member].each do |key, mem|
     @members << Member.new(mem)
   end
   session[:current_members] = @members
end

The controller sees the form entries as a hash, with the same parameter name as 
the model instance. (e.g. <%= text_field ''blah'' %> maps
to params[:blah])

Hopefully I haven''t misunderstood your question, and spammed the list
with my
crappy code. Heh.

--Wilson.


olivier Hericord wrote:
> it seems that it''s gonna be a little more complex than just
writing <%=
> textfield ''contact'' ''name'', :index
=> 1 %>, <%= textfield ''contact''
> ''name'', :index => 2 %> ....
> 
> i''m writing a little helper right now....once it''s finish
i will post them.
> 
> but i think my problem is a very common one: each time A has_many B
it''s
> difficult to create many B while creating a new A (without using 
> sessions and using just one view)
> 
> On 8/10/05, *Zachery Hostens*
<zacheryph-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
> <mailto:zacheryph-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>> wrote:
> 
>     olivier,
> 
>     <%= textfield ''contact'' ''name'',
:index => 1 %>
> 
>     will give you params[:contact][1][:name] in your action.  and so one
>     for each index above.  (:index => 1 MAY index to [0] but i dont
think
>     so)
> 
>     On 8/9/05, olivier Hericord
<olivier.hericord.lists-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
>    
<mailto:olivier.hericord.lists-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>>
wrote:
>      > hi,
>      >
>      >  imagine a simple contact table with just one field labeled
name...
>      >  nothing particular in the contact model just a simple validation
>     like being
>      > sure the name is longer than 3 characteres
>      >
>      >  in the scaffold generated view to create a new record we have
>      >  <%= textfield ''contact''
''name'' %>
>      >  and it works great to create one record
>      >
>      >  but, can i use <%= textfield ''contact''
''name'', :index => 1 %> ??
>      >
>      >  if i have <%= textfield ''contact''
''name'', :index => 1 %> <%>     textfield
>      > ''contact'' ''name'', :index
=> 2 %> in my view for instance, what
>     has to be the
>      > code in my controller to create these 2 contacts and is a
>     validation on one
>      > phone will highlight the correct phone in the view??
>      >