[I had again forgotten to do *reply all*, but the thread is here below for
anyone interested]
Gabriel,
what you did is ingenious but a bit intricate. Consider this alternative:
a) when the user submits the 1st form, just save the data in session (by the
way, I wouldn't save the 'User.new()' in the session; I'd simply save the
data). No validation is needed here (else you end up doing all or part of
the job that AR will do later, as you in fact did).
b) when the user submits the 2nd form, then create the user (with the
session data, and the new param info). AR will do the full validation.
Add perhaps this optional step:
b1) if creation of the user is succesful, redirect to a 'show' form with a
message that user creation was done (and showing the user created).
b2) if unsuccesful, redirect to 'index' (as this, in spite of its name, is
the page with a new form) with a message that the user creation was
unsuccesful.
This is simpler, and it tests all the tutorial points: session, flash,
forms, render, redirect.
In any case, it was certainly interesting to read your code (that onclick
handler to go back was cute); javascript knowledge is always welcome..
Raul
On Mon, Oct 27, 2008 at 10:40 AM, Gabriel <[EMAIL PROTECTED]> wrote:
> Dear Raul,
> I believe that the problem is not that simple, and I think I've figured out
> what was going on:
>
> The model validations are called when the object tries to persist (when you
> call "@user.save" as you wrote), but the homework requires that the object
> must be persisted after the user inserts the address, his data must be
> addressed to the session for now. And also I think that the objective of
> this homework is to explore the characteristics of the ApplicationController
> class...
>
> so here we go - i did this:
>
> The model class remains like this (even only persisting the object after
> all the validations, I think this would help in session data loss cases):
>
> # models/user.rb
> class User < ActiveRecord::Base
> validates_presence_of :name, :age, :hobby, :address
> end
> # ----------
>
> Then changed the "index" view form action to this new action in the
> hello_controller.rb
>
> # controllers/hello_controller.rb
> ...
> def first_step
> text = "" # Var to recieve validation msgs.
> params[:user].each do |param|
> if param[1].length == 0 # Param value is empty
> text += "#{param[0].capitalize} cannot be empty!<br />"
> end
> end
> if text.length > 0
> render :text => text + '<a href="#"
> onclick="history.go(-1)">Back</a>' # Render a "validation failed" page with
> back button
> else
> session[:user] = User.new(params[:user]) # Save User object data to
> session (as required)
> redirect_to :action => :add_address # Redirect to new page
> end
> end
> ...
> # ----------
>
> Then I've created the "AddAddressToUser" migration and the
> "add_address.html.erb" view, which shows the session data (just to be sure
> that the object data is persisted correctly to the session) and the Address
> field.
>
> This field is contained whithin a form which calls the "save_user" action
> that I've created just like the "first_step", which performs another
> validation to the Address field (including a "validation failed" page) and,
> finally persists the object if every field is filled.
>
> I will not post every code here to save some space, but the concept is the
> same for the two steps.
>
> Thanks for your help,
> Gabriel.
>
> 2008/10/27 raul parolari <[EMAIL PROTECTED]>
>
> Gabriel
>>
>> > @user = User.new(params[:user]) # <= This must create a new instance
>>
>> after this do:
>> @user.save
>>
>> and see if this helps
>>
>> Raul
>>
>>
>>
>> On Mon, Oct 27, 2008 at 8:29 AM, Gabriel <[EMAIL PROTECTED]> wrote:
>>
>>>
>>> I'm stuck in the first step... - Add "cannot be blank" validation to
>>> the three fields...
>>>
>>> Model validations aren't working at all... i've tried
>>> "validates_presence_of", "validate_on_create"... Aren't these methods
>>> called when I create a new instance of the User object?
>>>
>>> the 'respond' action (controllers/hello_controller.rb) does this:
>>>
>>> def respond
>>> @user = User.new(params[:user]) # <= This must create a new instance
>>> of the "User" object.
>>> ...
>>> end
>>>
>>> and the User (models/user.rb) is:
>>>
>>> class User < ActiveRecord::Base
>>> # Nothing works here! "validates_presence_of" or "def
>>> validate_on_create"... nothing!
>>> end
>>>
>>> ----------
>>>
>>> Any clues?
>>>
>>> Thanks in advance,
>>> Gabriel.
>>> >>>
>>>
>>
>
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