Usually a form maps to a AR instance (and hence a database row). Consider the simple example of a Person model in which there is just one attribute "name". [This is just an example to illustrate the problem] Now I need a single form that allows multiple people to be added, basically multiple text fields (for "name" attribute) each resulting in a new ActiveRecord object for each person, but a single action and single submit button. Another example would be multiple image upload from a single form [Flickr] The way I am thinking of doing this is by having a model "People" that encapsulates many Person objects, on submit the controller method of Person shall iterate over its params and create as many Person objects as required. The People class though a model does not have a database table of its own. My question : Is there a better way/pattern of doing this? Thanks --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Hi Nasir, You''re making it too hard for yourself. Just do the iteration in the controller, or make a method like "create_multiple" in your person model. Cheers Starr --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Hi Nasir,
Here is an example to accomplish what you are trying to do. The
''show''
method starts things rolling. The ''people'' table has only
''id'' and
''name'' columns.
The Model (person.rb):
class Person < ActiveRecord::Base
end
The Controller (person_controller.rb):
class PersonController < ApplicationController
def show
end
def nbrOfNewPeople
3
end
def add_person
nbrOfNewPeople.times do | index |
person = Person.new
personParams = params[(''person'' + index.to_s).intern]
person.update_attributes(personParams) unless
personParams[:name].empty?
end
end
end
The View (show.rhtml)
<%= form_tag :action=> ''add_person'' %>
<% controller.nbrOfNewPeople.times do | i | %>
<label for=''<%=''person'' +
i.to_s%>''>Name:</label>
<%= text_field ''person'' + i.to_s, ''name''
%>
</br>
<% end %>
<%= submit_tag "Add People" %>
<%= end_form_tag %>
Paul
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Starr, Paul
Thanks a lot for your responses, I was making it too complex :-(
Just a minor refinement to Paul''s example -
In the form, continue to let the text_field be associated with model person
and let the field be named anything, in this case a number
...
<%= text_field ''person'' , i.to_s %>
...
In the controller extract the params in a hash
my_params = params[:person]
my_params.each do |p|
param_hash = {:name => p[1]}
@person = Person.new(param_hash)
.......
@person.save
end
This allows me to have the controller not know the number of people that are
sent from the form, so form can have a javascript which adds new text_fields
to the form dynamically. [like gmail]
Thanks
On 10/11/06, Paul Corcoran
<prcorcoran-Wuw85uim5zDR7s880joybQ@public.gmane.org>
wrote:>
>
> Hi Nasir,
>
> Here is an example to accomplish what you are trying to do. The
''show''
> method starts things rolling. The ''people'' table has only
''id'' and
> ''name'' columns.
>
> The Model (person.rb):
> class Person < ActiveRecord::Base
> end
>
> The Controller (person_controller.rb):
> class PersonController < ApplicationController
>
> def show
> end
>
> def nbrOfNewPeople
> 3
> end
>
> def add_person
> nbrOfNewPeople.times do | index |
> person = Person.new
> personParams = params[(''person'' +
index.to_s).intern]
> person.update_attributes(personParams) unless
> personParams[:name].empty?
> end
> end
>
> end
>
>
> The View (show.rhtml)
> <%= form_tag :action=> ''add_person'' %>
> <% controller.nbrOfNewPeople.times do | i | %>
> <label for=''<%=''person'' +
i.to_s%>''>Name:</label>
> <%= text_field ''person'' + i.to_s,
''name'' %>
> </br>
> <% end %>
> <%= submit_tag "Add People" %>
> <%= end_form_tag %>
>
> Paul
>
>
> >
>
--
I don''t like $_, actually the only place I like $s is in my wallet.
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