I''m trying to implement a remove from cart method based on the
examples in the second edition Agile book. I have everything working
except for the RJS that removes items from the cart. Ideally what
I''d like to do is highlight an element that I am deleting only if
there is more than one of that particular item in the cart. If the
item deleted is the only of it''s kind it gets removed from the
document before the highlight is "activated".
page[:cart].replace_html :partial => ''cart'', :object =>
@cart
page[@div].visual_effect :highlight,
:startcolor => "#88ff88",
:endcolor => "#114411"
Is there a way to use RJS to see if page[@div] (in this case) exists
before I try to do the highlight?
Thanks,
Jake
Jake Schutz wrote:> I''m trying to implement a remove from cart method based on the > examples in the second edition Agile book. I have everything working > except for the RJS that removes items from the cart. Ideally what I''d > like to do is highlight an element that I am deleting only if there is > more than one of that particular item in the cart. If the item > deleted is the only of it''s kind it gets removed from the document > before the highlight is "activated". > > > page[:cart].replace_html :partial => ''cart'', :object => @cart > > page[@div].visual_effect :highlight, > :startcolor => "#88ff88", > :endcolor => "#114411" > > Is there a way to use RJS to see if page[@div] (in this case) exists > before I try to do the highlight? > > Thanks, > Jake > _______________________________________________ > Rails mailing list > Rails@lists.rubyonrails.org > http://lists.rubyonrails.org/mailman/listinfo/railsCheck out http://www.akropolix.net/rik0/blogs/2006/06/14/rjs-rails-if-statement/ It shows how to select the div if it exists and then run some javascript happiness on it. Matthew Margolis blog.mattmargolis.net
Matthew,
Thanks for your reply, however, I can''t seem to get it to work
properly. Maybe it is because in certain cases I am removing that
element from the document before I get to the "search", or maybe
there is an error in my implementation.
page[:cart].replace_html :partial => ''cart'', :object =>
@cart
page.select(@div).each do |page|
page[page].visual_effect :highlight,
:startcolor => "#88ff88",
:endcolor => "#114411"
end
Thanks,
Jake
On Jul 31, 2006, at 10:51 AM, Matthew Margolis wrote:
> Jake Schutz wrote:
>> I''m trying to implement a remove from cart method based on the
>> examples in the second edition Agile book. I have everything
>> working except for the RJS that removes items from the cart.
>> Ideally what I''d like to do is highlight an element that I am
>> deleting only if there is more than one of that particular item in
>> the cart. If the item deleted is the only of it''s kind it
gets
>> removed from the document before the highlight is
"activated".
>>
>>
>> page[:cart].replace_html :partial => ''cart'',
:object => @cart
>>
>> page[@div].visual_effect :highlight,
>> :startcolor =>
"#88ff88",
>> :endcolor => "#114411"
>>
>> Is there a way to use RJS to see if page[@div] (in this case)
>> exists before I try to do the highlight?
>>
>> Thanks,
>> Jake
>> _______________________________________________
>> Rails mailing list
>> Rails@lists.rubyonrails.org
>> http://lists.rubyonrails.org/mailman/listinfo/rails
>
> Check out http://www.akropolix.net/rik0/blogs/2006/06/14/rjs-rails-
> if-statement/
> It shows how to select the div if it exists and then run some
> javascript happiness on it.
>
>
> Matthew Margolis
> blog.mattmargolis.net
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
On Monday, July 31, 2006, at 11:13 AM, Jake Schutz wrote:>Matthew, >Thanks for your reply, however, I can''t seem to get it to work >properly. Maybe it is because in certain cases I am removing that >element from the document before I get to the "search", or maybe >there is an error in my implementation. > > >page[:cart].replace_html :partial => ''cart'', :object => @cart > >page.select(@div).each do |page| > >page[page].visual_effect :highlight, > :startcolor => "#88ff88", > :endcolor => "#114411" >end > >Thanks, >Jake > > > >On Jul 31, 2006, at 10:51 AM, Matthew Margolis wrote: > >> Jake Schutz wrote: >>> I''m trying to implement a remove from cart method based on the >> >>>examples in the second edition Agile book. I have everything >> >>>working except for the RJS that removes items from the cart. >> >>>Ideally what I''d like to do is highlight an element that I am >> >>>deleting only if there is more than one of that particular item in >>>>> the cart. If the item deleted is the only of it''s kind it gets >>>>> removed from the document before the highlight is "activated". >>> >>> >>> page[:cart].replace_html :partial => ''cart'', :object => @cart >>> >>> page[@div].visual_effect :highlight, >>> :startcolor => "#88ff88", >>> :endcolor => "#114411" >>> >>> Is there a way to use RJS to see if page[@div] (in this case) >> >>>exists before I try to do the highlight? >>> >>> Thanks, >>> Jake >>> _______________________________________________ >>> Rails mailing list >>> Rails@lists.rubyonrails.org >>> http://lists.rubyonrails.org/mailman/listinfo/rails >> >> Check out http://www.akropolix.net/rik0/blogs/2006/06/14/ >>rjs-rails-> if-statement/ >> It shows how to select the div if it exists and then run some > >>javascript happiness on it. >> >> >> Matthew Margolis >> blog.mattmargolis.net >> _______________________________________________ >> Rails mailing list >> Rails@lists.rubyonrails.org >> http://lists.rubyonrails.org/mailman/listinfo/rails > >_______________________________________________ >Rails mailing list >Rails@lists.rubyonrails.org >http://lists.rubyonrails.org/mailman/listinfo/railsI''m beginning to think that RJS templates should provide NO helper functions at all. Just a big text block that gets sent back. That way we would all have to program the response in JS, and we wouldn''t get tempted to use ruby control structures. It can be very confusing for people to grasp the concept that the RJS output is executed in the context of the client browser, rather than on the server side. _Kevin www.sciwerks.com -- Posted with http://DevLists.com. Sign up and save your mailbox.
Here''s what I did to solve my problem, it seems dirty and clunky. If
anybody has a better solution, I''m open to suggestions. From within
the model I''m returning an array (to the controller) that has the id
of the element to update as well as a variable that determines if the
highlight effect will be displayed by the RJS template.
Cart model:
def remove_cart_item(product)
current_item = @items.find { |item| item.product == product }
if current_item.quantity > 1
current_item.decrement_quantity #defined in cart_item model
@effect = 1
else
@items.delete(current_item)
@effect = 0
end
current_item = ["product" + current_item.id.to_s, @effect]
current_item
end
Store controller:
def remove_item
begin
@product = Product.find(params[:id])
rescue
logger.error("Attempt to access invalid product #{params[:id]}")
redirect_to_index("Invalid product
''#{params[:id]}''")
else
@div = @cart.remove_cart_item(@product)
redirect_to_index unless request.xhr?
end
end
Remobe_item.rjs:
page[:cart].replace_html :partial => ''cart'', :object =>
@cart
if @div[1] == 1
page[@div[0]].visual_effect :highlight,
:startcolor => "#88ff88",
:endcolor => "#114411"
end
Thanks,
Jake
On Jul 31, 2006, at 11:13 AM, Jake Schutz wrote:
> Matthew,
> Thanks for your reply, however, I can''t seem to get it to work
> properly. Maybe it is because in certain cases I am removing that
> element from the document before I get to the "search", or maybe
> there is an error in my implementation.
>
>
> page[:cart].replace_html :partial => ''cart'', :object
=> @cart
>
> page.select(@div).each do |page|
>
> page[page].visual_effect :highlight,
> :startcolor => "#88ff88",
> :endcolor => "#114411"
> end
>
> Thanks,
> Jake
>
>
>
> On Jul 31, 2006, at 10:51 AM, Matthew Margolis wrote:
>
>> Jake Schutz wrote:
>>> I''m trying to implement a remove from cart method based on
the
>>> examples in the second edition Agile book. I have everything
>>> working except for the RJS that removes items from the cart.
>>> Ideally what I''d like to do is highlight an element that I
am
>>> deleting only if there is more than one of that particular item
>>> in the cart. If the item deleted is the only of it''s kind
it
>>> gets removed from the document before the highlight is
"activated".
>>>
>>>
>>> page[:cart].replace_html :partial => ''cart'',
:object => @cart
>>>
>>> page[@div].visual_effect :highlight,
>>> :startcolor =>
"#88ff88",
>>> :endcolor =>
"#114411"
>>>
>>> Is there a way to use RJS to see if page[@div] (in this case)
>>> exists before I try to do the highlight?
>>>
>>> Thanks,
>>> Jake
>>> _______________________________________________
>>> Rails mailing list
>>> Rails@lists.rubyonrails.org
>>> http://lists.rubyonrails.org/mailman/listinfo/rails
>>
>> Check out http://www.akropolix.net/rik0/blogs/2006/06/14/rjs-rails-
>> if-statement/
>> It shows how to select the div if it exists and then run some
>> javascript happiness on it.
>>
>>
>> Matthew Margolis
>> blog.mattmargolis.net
>> _______________________________________________
>> Rails mailing list
>> Rails@lists.rubyonrails.org
>> http://lists.rubyonrails.org/mailman/listinfo/rails
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails