Rails - Jun 2006 - Hash flattening on paginator link_to

Hey

I need some help with pagination and the link_to in the view.

I''m trying to include a hash in the pagination link_to params and it 
keeps flattening out my hash.

Example:
Here''s my hash called @answer:
 
"answer"=>{"6"=>"9bf31c7ff062936a96d3c8bd1f8f2ff3",
           "7"=>"6f4922f45568161a8cdf4ad2299f6d23"}

Here''s the code in my view for my pagination link:
  	<%= link_to(''next'', {:params =>
params.merge(''answer'' => @answer,
	''page'' => object_pages.current.previous,)}) + ''
'' if object_pages.current.previous %>

See how the link_to doesn''t maintain the actual hash:
<a href="/student_portal/evaluate_exam/7?commit=Submit+Test&amp;
	
answer=69bf31c7ff062936a96d3c8bd1f8f2ff376f4922f45568161a8cdf4ad2299f6d23&amp;page=2">next</a>&nbsp;

Anyone know how I can pass a hash intact through a link_to ?

Thanks a ton!
Chris

On Jun 7, 2006, at 3:55 AM, chris landry wrote:
>  Hey
>
> I need some help with pagination and the link_to in the view.
>
> I''m trying to include a hash in the pagination link_to params and
it
> keeps flattening out my hash.
>
> Example:
> Here''s my hash called @answer:
>  
"answer"=>{"6"=>"9bf31c7ff062936a96d3c8bd1f8f2ff3",
>            "7"=>"6f4922f45568161a8cdf4ad2299f6d23"}
>
> Here''s the code in my view for my pagination link:
>   	<%= link_to(''next'', {:params =>
params.merge(''answer'' => @answer,
> 	''page'' => object_pages.current.previous,)}) +
'' '' if
> object_pages.current.previous %>
>
> See how the link_to doesn''t maintain the actual hash:
> <a
href="/student_portal/evaluate_exam/7?commit=Submit+Test&amp;
> 		 
> answer=69bf31c7ff062936a96d3c8bd1f8f2ff376f4922f45568161a8cdf4ad2299f6 
> d23&amp;page=2">next</a>&nbsp;
>
> Anyone know how I can pass a hash intact through a link_to ?
>
> Thanks a ton!
> Chris
>
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
Hey Chris-

	To get a hash through in an url like that you need to serialize it  
and deserialize it. Something like this:

#in your application controller somewhere:

require ''base64''
def construct_for_link(object)
    Base64.encode64(Marshal.dump(object))
end
helper_method : construct_for_link

def deconstruct_from_link(object)
   Marshal.load(Base64.decode64(object))
end
helper_method :deconstruct_from_link


# then in your view
<%= link_to(''next'', {:params =>
params.merge(''answer'' =>
construct_for_link(@answer),
	''page'' => object_pages.current.previous,)}) + ''
'' if
object_pages.current.previous %>

# in controller
   answer = deconstruct_from_link(params[:answer])


Cheers-
-Ezra

On 7-jun-2006, at 19:02, Ezra Zygmuntowicz wrote:
>
> On Jun 7, 2006, at 3:55 AM, chris landry wrote:
>
>>  Hey
>>
>> I need some help with pagination and the link_to in the view.
>>
>> I''m trying to include a hash in the pagination link_to params
and it
>> keeps flattening out my hash.
>>
>> Example:
>> Here''s my hash called @answer:
>>  
"answer"=>{"6"=>"9bf31c7ff062936a96d3c8bd1f8f2ff3",
>>           
"7"=>"6f4922f45568161a8cdf4ad2299f6d23"}
>>
>> Here''s the code in my view for my pagination link:
>>   	<%= link_to(''next'', {:params =>
params.merge(''answer'' => @answer,
>> 	''page'' => object_pages.current.previous,)}) +
'' '' if
>> object_pages.current.previous %>
>>
>> See how the link_to doesn''t maintain the actual hash:
>> <a
href="/student_portal/evaluate_exam/7?commit=Submit+Test&amp;
>> 		 
>> answer=69bf31c7ff062936a96d3c8bd1f8f2ff376f4922f45568161a8cdf4ad2299f 
>> 6d23&amp;page=2">next</a>&nbsp;
>>
>> Anyone know how I can pass a hash intact through a link_to ?
or just http://dev.rubyonrails.org/ticket/4947

--
Julian ''Julik'' Tarkhanov
please send all personal mail to
me at julik.nl