Hi guys and gals.
I don''t know how to explain this too well, so I''ll try my best
and post
some obviously dysfunctional code (just so you can get the idea of what
I''m after if my explanation doesn''t do it.)
What I want to do is create an upload form that users can upload more
than one item with. The catch is I want to use ajax to pull off an
insert_html and update the page showing thumbnail to each file as it''s
added, while the other files are being uploaded. So, let''s say I upload
3 files, when the first one finishes it''s inserted to an unordered list
(via ajax, without reloading the page while the other two files are
still uploading), then the next file, then the last file and it ends.
I''ve been doing it fine with a single file, but now that I''ve
added
multiple file uploads that controller style won''t work.
Doing something like this, which I figured was a 1,000,000:1 shot at it
working (of course, it didn''t) gives a DoubleRender error which I
expected:
def create
@project = Project.find(params[:id])
params[:attachment].each do |key, value|
if value and value != ''''
@file = Image.new(Hash[''uploaded_data'' => value])
@file.user_id = logged_in_user.id
@file.project_id = @project.id
respond_to do |format|
if @file.save
format.js do
responds_to_parent do
render :update do |page|
page.insert_html :top, "images", :partial =>
''image'',
:object => @file
end
end
end
else
# etc...
end
end
end
else
# etc.
end
Can this sort of thing even be pulled off?
--
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You want to execute multiple inserts in a single response, not
multiple responses. This might work, assuming that the rest of your
code works and that you are using attachments as the relationship
name.
def create
@project = Project.find(params[:id])
params[:attachment].each do |key, value|
if value and !value.blank?
new_file = Image.new(Hash[''uploaded_data'' => value])
new_file.user_id = logged_in_user.id
@project.attachments << new_file
end
end
respond_to do |format|
if @project.save
format.js do
render :update do |page|
@project.attachments.each do |file|
page.insert_html :top, "images", :partial =>
''image'', :object => file
end
end
end
end
end
end
On Apr 7, 9:45 am, Jack Bauer
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> Hi guys and gals.
>
> I don''t know how to explain this too well, so I''ll try my
best and post
> some obviously dysfunctional code (just so you can get the idea of what
> I''m after if my explanation doesn''t do it.)
>
> What I want to do is create an upload form that users can upload more
> than one item with. The catch is I want to use ajax to pull off an
> insert_html and update the page showing thumbnail to each file as
it''s
> added, while the other files are being uploaded. So, let''s say I
upload
> 3 files, when the first one finishes it''s inserted to an unordered
list
> (via ajax, without reloading the page while the other two files are
> still uploading), then the next file, then the last file and it ends.
> I''ve been doing it fine with a single file, but now that
I''ve added
> multiple file uploads that controller style won''t work.
>
> Doing something like this, which I figured was a 1,000,000:1 shot at it
> working (of course, it didn''t) gives a DoubleRender error which I
> expected:
>
> def create
> @project = Project.find(params[:id])
>
> params[:attachment].each do |key, value|
> if value and value != ''''
> @file = Image.new(Hash[''uploaded_data'' =>
value])
> @file.user_id = logged_in_user.id
> @file.project_id = @project.id
>
> respond_to do |format|
> if @file.save
> format.js do
> responds_to_parent do
> render :update do |page|
> page.insert_html :top, "images", :partial =>
''image'',
> :object => @file
> end
> end
> end
> else
> # etc...
> end
> end
> end
> else
> # etc.
> end
>
> Can this sort of thing even be pulled off?
> --
> Posted viahttp://www.ruby-forum.com/.
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Hi Jaryl, thanks. That would work, but it has a slightly different behavior than what I''m looking for. I want it to begin the upload of the multiple images, let''s say 3, and when one finishes being processed (resized, etc.) it''s inserted into the page and then the second image starts being processed and inserted, then the third. Your solution would process all three and after it finishes processing it''ll dump all 3 of them out at essentially the same time. It''s a relatively unimportant difference, but I was wondering if there''s a way to pull that off. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Google for a Rails version of swfupload... in the Rails code it updates the thumbnails as it processes the files. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
If that''s the case, then you should split it up into multiple requests. I believe that you can only send back one response per request, so that is an inherent problem. Perhaps you may try sending a request once the a valid file is selected in the file upload field. On Apr 7, 10:04 pm, Jack Bauer <rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> Hi Jaryl, thanks. > > That would work, but it has a slightly different behavior than what I''m > looking for. I want it to begin the upload of the multiple images, let''s > say 3, and when one finishes being processed (resized, etc.) it''s > inserted into the page and then the second image starts being processed > and inserted, then the third. Your solution would process all three and > after it finishes processing it''ll dump all 3 of them out at essentially > the same time. > > It''s a relatively unimportant difference, but I was wondering if there''s > a way to pull that off. > -- > Posted viahttp://www.ruby-forum.com/.--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Jaryl Sim wrote:> If that''s the case, then you should split it up into multiple > requests. I believe that you can only send back one response per > request, so that is an inherent problem.Sure that''s the case, that''s how HTTP protocol works. One response for one request. I think of it as similar to an event loop, where each cycle through the loop processes one event. The difference is that an event loop is continuous, where a request-response cycle sleeps between each cycle. In other words the event loop runs continuously checking an event queue, where as HTTP sleeps until it is sent a request, which causes it to "awake" and process the request and generate a response. After the response is processes it sleeps again until awoken by another request.> Perhaps you may try sending a request once the a valid file is > selected in the file upload field.As far as I know, the behavior you''re after is going to require some client-side code. I know there are a number of solutions floating around, some taking advantage of Flash (as I assume the swfupload does). Some others I''ve heard of make use of a Java applet. But, I would imagine this behavior could be built with JavaScript/AJAX. In any case I think the "brains" of this feature will need to be implemented client-side. The AJAX should be able to send requests to a server-side action responsible to accepting one file, and the client-side code would make one request per file, plus additional request to manipulate the DOM. Please note this is all speculation. I have no proof-of-concept code to offer. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Thanks everyone for the replies. For now I''m just going with good ''ol standard HTML response until I figure out what I''m going to do. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---