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Bill Walton

2006-Mar-09 16:59 UTC

[Rails] Need help PLEASE!!! - updating collection from form

Greetings!

I''m trying to update a set of records from the same model on one form. 
The AWD book gives an example on p.356 but I guess I''m not
understanding it.

I can see from the error message I''m getting that the controller is
receiving a hash of hashes back from the view, and that it''s got the
stuff I expected (two values per record that was sent to the view)

What I can''t figure out is how to update the records I sent in, based
on the values returned.  I would *really* appreciate it if someone could help
point me in the right direction.  I''ve included the view and controller
code below.

Thanks in advance for any assistance!
Bill

--------------------- controller code ------------------------
def edit_illnesses
    # send a collection of records to the view
    @emrec = find_emrec
    @illnesses = Illness.find(:all,
                                        :conditions => ["emrec_id =
?", @emrec.id])
end

def update_illness
   # update the records sent in ''edit_illnesses'' based on
what''s returned in ''params''
    @emrec = find_emrec
    @illnesses = Illness.find(:all,
                                        :conditions => ["emrec_id =
?", @emrec.id])
    for i in @illnesses
       #  I can''t figure out what should go here to update each of the
records
       #  with the new content returned from the form.  How do I pull the
       #  data from the params hash of hashes?  The current code is:
      i.update(params[:illness].id, (params[:illness].id).illness_date,
(params[:illness].id).qualifier)
      i.save
    end
    redirect_to :controller => ''creation'', :action =>
''show_emrec''
  end

---------------------- end controller code -------------------------  

------------------  view code --------------------------------
<%= form_tag(:action => "update_illness") %>

<table cellpadding="5" cellspacing="0">
 
<% 
  odd_or_even = 0
  for @illness in @illnesses
    odd_or_even = 1 - odd_or_even
%>
 
  <tr valign="top" class = "Listline<%= odd_or_even
%>">
 
   <td width="200">
     <%=h @illness.illness %>
   </td>
     
   <td width="200">
      <%= options = [["Select a qualifier", ""]] +
Illness::DATE_QUALIFIERS
           select("illness[]", "qualifier", options)
      %> 
   </td>
   
   <td width="200">
      <%= options = [["Select a year", ""]] +
Illness::DATE_YEARS
             select("illness[]", "illness_date", options)
      %> 
   </td>
 </tr>
 <% end %>
  
</table>
<hr/>

<input type = "submit" value = "Update" />
<%= end_form_tag %>

----------------------- end view code ----------------------

----------------------- error message -----------------------
NoMethodError in Phistoryadmin#update_illness 
undefined method `illness_date'' for 32200148:FixnumRAILS_ROOT:
./script/../config/..

Application Trace | Framework Trace | Full Trace 
#{RAILS_ROOT}/app/controllers/phistoryadmin_controller.rb:22:in
`update_illness''
#{RAILS_ROOT}/app/controllers/phistoryadmin_controller.rb:21:in
`update_illness''C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
`perform_action_without_filters''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/filters.rb:332:in
`perform_action_without_benchmark''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
C:/INSTAN~1/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/rescue.rb:82:in
`perform_action''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
`process_without_session_management_support''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/session_management.rb:116:in
`process''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/dispatcher.rb:38:in
`dispatch''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:117:in
`handle_dispatch''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:83:in
`service''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:95:in `start''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:92:in `start''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:82:in `start''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:69:in
`dispatch''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/servers/webrick.rb:59
C:/INSTAN~1/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/server.rb:28
C:/INSTAN~1/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
script/server:3#{RAILS_ROOT}/app/controllers/phistoryadmin_controller.rb:22:in
`update_illness''
#{RAILS_ROOT}/app/controllers/phistoryadmin_controller.rb:21:in
`update_illness''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
`perform_action_without_filters''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/filters.rb:332:in
`perform_action_without_benchmark''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
C:/INSTAN~1/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/rescue.rb:82:in
`perform_action''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
`process_without_session_management_support''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/session_management.rb:116:in
`process''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/dispatcher.rb:38:in
`dispatch''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:117:in
`handle_dispatch''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:83:in
`service''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:95:in `start''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:92:in `start''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start''
C:/INSTAN~1/ruby/lib/ruby/1.8/webrick/server.rb:82:in `start''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:69:in
`dispatch''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/servers/webrick.rb:59
C:/INSTAN~1/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/server.rb:28
C:/INSTAN~1/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require''
C:/INSTAN~1/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
script/server:3Request
Parameters:
{"illness"=>{"11"=>{"illness_date"=>"1970",
"qualifier"=>"not since"},
"9"=>{"illness_date"=>"1972",
"qualifier"=>"since"},
"10"=>{"illness_date"=>"1971",
"qualifier"=>"not since"}}}

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Alan Francis

2006-Mar-10 10:13 UTC

head link

[Rails] Re: Need help PLEASE!!! - updating collection from form

>       i.update(params[:illness].id, (params[:illness].id).illness_date, 
> (params[:illness].id).qualifier)
> Parameters:
{"illness"=>{"11"=>{"illness_date"=>"1970",
> "qualifier"=>"not since"},
"9"=>{"illness_date"=>"1972",
> "qualifier"=>"since"},
"10"=>{"illness_date"=>"1971",
"qualifier"=>"not
> since"}}}
You access the hash used for update as:

params[:illness][id]

e.g. params[:illness]["11"] gives
{"illness_date"=>"1970",
"qualifier"=>"not since"}

Does that help ?

A.

-- 
Posted via http://www.ruby-forum.com/.

Alan Francis

2006-Mar-10 10:28 UTC

head link

[Rails] Re: Need help PLEASE!!! - updating collection from form

Alan Francis wrote:> 
>>       i.update(params[:illness].id, (params[:illness].id).illness_date,
>> (params[:illness].id).qualifier)
> 
> 
>> Parameters:
{"illness"=>{"11"=>{"illness_date"=>"1970",
>> "qualifier"=>"not since"},
"9"=>{"illness_date"=>"1972",
>> "qualifier"=>"since"},
"10"=>{"illness_date"=>"1971",
"qualifier"=>"not
>> since"}}}
> 
> You access the hash used for update as:
> 
> params[:illness][id]
> 
> e.g. params[:illness]["11"] gives
{"illness_date"=>"1970",
> "qualifier"=>"not since"}
Thinking about this, I''m more than a little sketchy, but I think 
something like:

params[:illness].each_pair do |key, value|
   Illness.find(key).update(value)
end

should work.

A.

-- 
Posted via http://www.ruby-forum.com/.

Bill Walton

2006-Mar-10 13:07 UTC

head link

[Rails] Re: Need help PLEASE!!! - updating collection from form

Hi Alan,

Thanks very much for your replies.  I did get this working yesterday using
code very much like what you suggest here.  My original intent was to start
with the records and search the params.  I later decided to try the reverse.
Thus the two seperate pleas.  At any rate, in the end it was easy.  All
except for finding the documentation ;-(

I think maybe I''ll put up a wiki page on accessing the params hash for
other
nubies.

Thanks again,
Bill

----- Original Message -----
From: "Alan Francis" <alancfrancis@gmail.com>
To: <rails@lists.rubyonrails.org>
Sent: 2006-03-10 4:28 AM
Subject: [Rails] Re: Need help PLEASE!!! - updating collection from form

> Alan Francis wrote:
> >
> >>       i.update(params[:illness].id,
(params[:illness].id).illness_date,
> >> (params[:illness].id).qualifier)
> >
> >
> >> Parameters:
{"illness"=>{"11"=>{"illness_date"=>"1970",
> >> "qualifier"=>"not since"},
"9"=>{"illness_date"=>"1972",
> >> "qualifier"=>"since"},
"10"=>{"illness_date"=>"1971",
"qualifier"=>"not
> >> since"}}}
> >
> > You access the hash used for update as:
> >
> > params[:illness][id]
> >
> > e.g. params[:illness]["11"] gives
{"illness_date"=>"1970",
> > "qualifier"=>"not since"}
>
> Thinking about this, I''m more than a little sketchy, but I think
> something like:
>
> params[:illness].each_pair do |key, value|
>    Illness.find(key).update(value)
> end
>
> should work.
>
> A.
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails

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