Params error with: complex form+multiple models

Rails
1

Hello,

I’m trying to create a complex form with multiple models.

The problem is that the params hash is sent out of order to the
controller, and the data is saved wrong in the database.

What I get is:
Parameters: {“commit”=>“Cadastrar”, “invoice”=>{“mode”=>“in”,
“total”=>“34”, “items_attributes”=>[{“item”=>“3333333”},
{“quantity”=>“3333333”, “item”=>“666666”}, {“price”=>“3333333”,
“quantity”=>“666666”}, {“price”=>“4666666”}], “company_id”=>“10”},…

But what I want is:
Parameters: {“commit”=>“Cadastrar”, “invoice”=>{“mode”=>“in”,
“total”=>“34”, “items_attributes”=>[{“item”=>“3333333”,
“quantity”=>“3333333”, price"=>“3333333”},{“item”=>“666666”,
“quantity”=>“666666”,“price”=>“666666”}], “company_id”=>“10”},…

Codes are:

Controller: http://pastie.org/334963
Models: http://pastie.org/334965
Views: http://pastie.org/334967

Does anyone know my error?
Any help will be thankfull.

David S.

2

up,

anyone?

3

Does any one know how to fix? Or any suggestion will be ok.
I did not find the solution yet.

David S.

4

On Dec 13, 3:22 pm, David S. [email protected]
wrote:

Does any one know how to fix? Or any suggestion will be ok.
I did not find the solution yet.

Given that it’s an ajax form (ie serialized by prototype), it’s worth
checking that you form elements have unique dom ids as that sort of
stuff will confuse prototype.

Fred

5

Hi Fred,
thanks for answered.

So, I have this code generated:

item quantity Price remover
item quantity Price remover
item quantity Price remover
item quantity Price remover

Or you can see the code here: http://pastie.org/339225

The question is: Should this input() have a id different from the
other ones? I’m using a partial (partial code: http://pastie.org/334967)
to render this output. What should I do?

Sorry for all those question, but I’m a little noobe, and I have
exhausted all other sources that I now.

Thanks,

David S.

6

On Sun, Dec 14, 2008 at 5:14 PM, David S.
[email protected] wrote:

The question is: Should this input() have a id different from the
other ones? I

Absolutely, that’s basic HTML – an ID must be unique within a given
page. And more so if you have JavaScript acting on things via ID.

FWIW,

Hassan S. ------------------------ [email protected]

7

So, now I know where is the error, but I still don’t know how to fix it.

When I use remote_form_for, the params hash gets messed up. If I use,
form_for, everything is sent ok. But, I want a Ajax for.

Does anyone know how to fix it?

thanks,

David S.

8

On Dec 16, 1:50 am, David S. [email protected]
wrote:

Hi Hassan S.,
thanks for replay it.

So, to solve the problem I had to create a unique ID to each element.
That was easy I used this code:

<% fields_for “invoice[items_attributes][#{Time.now.tv_usec.to_s}]”,
invoice_item do |form_invoice_item| -%>

If the forms you had right at the beginning only submitted incorectly
because of the duplicate ids then I’d try going back to that original
code and only changing
<%= form_invoice_item.text_field :item %>
to
<%= form_invoice_item.text_field :item, :id =>
“invoice_items_attributes_item_#{invoice_item.id}” %>

Fred

9

Hi Hassan S.,
thanks for replay it.

So, to solve the problem I had to create a unique ID to each element.
That was easy I used this code:

<% fields_for “invoice[items_attributes][#{Time.now.tv_usec.to_s}]”,
invoice_item do |form_invoice_item| -%>

And with Time.now.tv_usec.to_s I created a unique ID for each group of
elements, and e got the params hash like this:

Parameters: {“commit”=>“Cadastrar”, “invoice”=>{“mode”=>“in”,
“items_attributes”=>{ “239625”=>[{“price”=>“2”, “should_destroy”=>“”,
“quantity”=>“2”, “id”=>“109”, “item”=>“2”}],
“48717”=>[{“price”=>“5”, “quantity”=>“5”,
“item”=>“5”}],
“238297”=>[{“price”=>“1”, “should_destroy”=>“”,
“quantity”=>“1”, “id”=>“108”, “item”=>“1”}],
“240939”=>[{“price”=>“4”, “should_destroy”=>“”,
“quantity”=>“4”, “id”=>“110”, “item”=>“4”}],
“236847”=>[{“price”=>“3”, “should_destroy”=>“”,
“quantity”=>“3”, “id”=>“107”, “item”=>“3”}]},
“total”=>“123”, “id”=>“45”, “company_id”=>“10”},
“authenticity_token”=>“560d84898abf599368ad8ef6972ffbb649ecf0ee”}
( http://pastie.org/340083 ).

But I got a problem when accessing those attributes in my model.
It was like this:
…
items_attributes.each do |attributes|
invoice_item.build(attributes)
…
and I have to add a [1] to access the right attributes.
…
items_attributes.each do |attributes|
invoice_item.build(attributes[1])
…

The attributes[0] give me = 239625, and
attributes[1] = price2should_destroyquantity2id109item2

To create I new record, every thing was ok.
To edit, I have to access the ID of the attributes variable… and I
don’t know how. I have tried attributes[1][:id], attributes[1][0],
attributes[1][id].
Nothing seems to work. My model source code is here:
http://pastie.org/340088

So to sum up, how can I access the Id attributes of attributes[1]

Thanks

David S.