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Garrett

2006-Oct-11 01:10 UTC

non-form-based file upload

Hi all,

I have a relatively newbie question regarding the processing of a file
upload from a source other than a Rails form.  I''d like to upload a
file using a generic HTTP POST request that happens, in this case, to
come from a Java applet.

Each upload is a ZIP file that should be associated with particular
activity ID and document ID.  The (multipart) form-based version works
fine, using the standard ActionView file_field helper and code like

path = "/files/" + params[:upload][:data].original_filename
root = "#{RAILS_ROOT}/public"
data = params[:upload][:data].read
File.open(path, ''wb'') do |f|
   f.write(data)
end

...in the controller.

What I''m wondering is how to handle the applet-based upload.  I
figured it might help to have a custom route defined that the applet
would use, something like:

map.connect ''activities/:activity_id/:document_id'',
   :controller => ''activities'', :action =>
''new_upload_applet'',
   :activity_id => nil, :document_id => nil,
   :requirements => {:activity_id => /\d/, :document_id => /\d/}

But then what?  In the (hypothetical) new_upload_applet action, how do
I access the file data itself (stored under params[:upload][:data] in
the form-based version)?

Any help would be greatly appreciated.  Thanks in advance,

Garrett

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Garrett Weinberg

2006-Oct-12 16:05 UTC

head link

non-form-based file upload

Hi all,

I have a relatively newbie question regarding the processing of a file
upload from a source other than a Rails form.  I''d like to upload a
file using a generic HTTP POST request (which happens, in this case, to
come from a Java applet, though that''s unimportant).

Each upload is a ZIP file that should be associated with particular
activity ID and document ID.  The (multipart) form-based version works
fine, using the standard ActionView file_field helper and code like

path = "/files/" + params[:upload][:data].original_filename
root = "#{RAILS_ROOT}/public"
data = params[:upload][:data].read
File.open(path, ''wb'') do |f|
   f.write(data)
end

...in the controller.

What I''m wondering is how to handle the applet-based upload.  I
figured it might help to have a custom route defined that the applet
would use, something like:

map.connect ''activities/:activity_id/:document_id'',
   :controller => ''activities'', :action =>
''new_upload_applet'',
   :activity_id => nil, :document_id => nil,
   :requirements => {:activity_id => /\d/, :document_id => /\d/}

But then what?  In the (hypothetical) new_upload_applet action, how do
I access the file data itself (stored under params[:upload][:data] in
the form-based version)?

Any help would be greatly appreciated.  Thanks in advance,

Garrett

-- 
Posted via http://www.ruby-forum.com/.

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Thorsten L

2006-Oct-12 16:13 UTC

head link

Re: non-form-based file upload

uhm ... a form-base upload is only a HTTP POST Request, isnt it?.

so it should not make a difference weither you send that POST via an
applet or form. Rails only sees a POST Request coming in, it cant see
if it was eend by a applet,by an ajax call or a form or whatever....

in all cases, the file should be acceccible through the params hash.

dont see where the problem is. or am i missing something?


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Alex Wayne

2006-Oct-12 16:30 UTC

head link

Re: non-form-based file upload

Garrett Weinberg wrote:> What I''m wondering is how to handle the applet-based upload.  I
> figured it might help to have a custom route defined that the applet
> would use, something like:
> 
> map.connect ''activities/:activity_id/:document_id'',
>    :controller => ''activities'', :action =>
''new_upload_applet'',
>    :activity_id => nil, :document_id => nil,
>    :requirements => {:activity_id => /\d/, :document_id => /\d/}
> 
> But then what?  In the (hypothetical) new_upload_applet action, how do
> I access the file data itself (stored under params[:upload][:data] in
> the form-based version)?
> 
> Any help would be greatly appreciated.  Thanks in advance,
> 
> Garrett
In theory, the applet should form a POST request that is 
indistinguishable from one submitted by the browser.  Or if you are on 
edge, you can post a restful xml query and rails will extract the 
params.  Although I am not sure how to encode binary data in the xml 
request.  Base64 perhaps?

And if your not edge, you can still POST xml with a Base64 encoded file 
and just manually parse it with REXML standard library.

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Garrett Weinberg

2006-Oct-18 12:16 UTC

head link

Re: non-form-based file upload

Thorsten L wrote:> uhm ... a form-base upload is only a HTTP POST Request, isnt it?.
> 
> so it should not make a difference weither you send that POST via an
> applet or form. Rails only sees a POST Request coming in, it cant see
> if it was eend by a applet,by an ajax call or a form or whatever....
> 
> in all cases, the file should be acceccible through the params hash.
> 
> dont see where the problem is. or am i missing something?

Yes, it seems you understand the situation.  My (newbie) question is 
*where* in the params hash to look for the file given a particular 
custom route that the applet uses for the HTTP POST.  So a basic example 
route & the params hash this would generate would help me out a lot. 
The params hash is more obvious to me in the normal, form-based version 
because I define the ActionView''s RHTML myself.  It''s the
*non*
form-based version that has me confused.

Thanks again,
Garrett

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Garrett Weinberg

2006-Nov-04 02:34 UTC

head link

[Rails] non-form-based file upload

Hi all,

I have a relatively newbie question regarding the processing of a file
upload from a source other than a Rails form.  I''d like to upload a
file using a generic HTTP POST request that happens, in this case, to
come from a Java applet.

Each upload is a ZIP file that should be associated with particular
activity ID and document ID.  The (multipart) form-based version works
fine, using the standard ActionView file_field helper and code like

path = "/files/" + params[:upload][:data].original_filename
root = "#{RAILS_ROOT}/public"
data = params[:upload][:data].read
File.open(path, ''wb'') do |f|
    f.write(data)
end

...in the controller.

What I''m wondering is how to handle the applet-based upload.  I
figured it might help to have a custom route defined that the applet
would use, something like:

map.connect ''activities/:activity_id/:document_id'',
    :controller => ''activities'', :action =>
''new_upload_applet'',
    :activity_id => nil, :document_id => nil,
    :requirements => {:activity_id => /\d/, :document_id => /\d/}

But then what?  In the (hypothetical) new_upload_applet action, how do
I access the file data itself (stored under params[:upload][:data] in
the form-based version)?

Any help would be greatly appreciated.  Thanks in advance,

Garrett

Rails - Oct 2006 - non-form-based file upload

non-form-based file upload

non-form-based file upload

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Re: non-form-based file upload

[Rails] non-form-based file upload