Rails - Aug 2006 - Convert datetime_select to Time object?

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Question 1
--------------------------
I am dealing with a database that holds products and it has a datetime 
field called "active_at". so I have the following for active_at:

<%= f.datetime_select :active_at %>

It gives me 5 different params:

params[:product][:active_at(1i)]
params[:product][:active_at(2i)]
params[:product][:active_at(3i)]
params[:product][:active_at(4i)]
params[:product][:active_at(5i)]

How do I convert this into a Time object?


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Question 2
--------------------------
What if I have another field called "is_active" and its just a
boolean.
If it''s set to false then active_at gets set to nil. Is there any
easier
way than just:

if params[:client][:is_active] == "1"
  (1..5).each {|num| params[:product].delete("active_at(#{num}i)")}
  params[:product][:active_at] = nil
end

Isn''t there a cleaner way to do this?

Thanks for your help.

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Ben Johnson wrote:
--------------------------
Question 1
 --------------------------
> I am dealing with a database that holds products and it has a datetime 
> field called "active_at". so I have the following for active_at:
> 
> <%= f.datetime_select :active_at %>
> 
> It gives me 5 different params:
> 
> params[:product][:active_at(1i)]
> params[:product][:active_at(2i)]
> params[:product][:active_at(3i)]
> params[:product][:active_at(4i)]
> params[:product][:active_at(5i)]
> 
> How do I convert this into a Time object?
Hi Ben

Internally Rails/Activerecord does lot of smart datatype 
conversion/transformations

 if you see 1i..5i it has a naming convention, it automatically gets 
converted to time object

@active_at = params[:product][:active_at]

same way when you query from db the timestamp is converted to a Time 
object



--------------------------
Question 2
--------------------------
> What if I have another field called "is_active" and its just a
boolean.
> If it''s set to false then active_at gets set to nil. Is there any
easier
> way than just:
> if params[:client][:is_active] == "1"
>   (1..5).each {|num|
params[:product].delete("active_at(#{num}i)")}
>   params[:product][:active_at] = nil
> end

you can implement that logic in model instead of controller

you can hook your logic into rails callbacks
http://rubyonrails.org/api/classes/ActiveRecord/Callbacks.html

def before_save
active_at = nil if is_active.nil? || is_active <= 0
end



regards
A.Senthil Nayagam
http://senthilnayagam.com


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