Facebooker talk - Dec 2007 - Uploading photos using facebook & attachment_fu

Hi All,
I''m trying to use a form to upload a photo that I will save using
attachment_fu.  I''m very new to Facebookr so I apologize if this is
covered
somewhere, but I''m kind of stumped.

Here''s what I''m doing now:
<% facebook_form_for(:my_object, :url => { :action =>
''upload_photo'', :id =>
params[:id] }, :html => { :multipart => true }) do |f| -%>

<%= radio_button_tag ''my_object[my_param]'',
"value" %>

<%= file_field_tag "photo[uploaded_data]" %>

<% end %>

Now that I''ve typed this out I''m realizing that the
facebook_form_for
probably isn''t doing anything for me since i''m not using the
f. helpers, but
I have two models that I''m trying to save data for.nonetheless,
here''s my
problem:

The params are passing
"photo"=>{"uploaded_data"=>"sample.jpg"} and
the
error that I''m getting is:
NoMethodError (undefined method `content_type'' for
"sample.jpg":String)

Again, I''m using attachment_fu to handle the image processing.  It was
working before I tried porting it over to facebook so I think I have
attachment_fu configured properly.

Any ideas on what I''m missing?

Many thanks,
Dustin
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Facebook doesn''t pass through multipart uploads. You can add  
a :canvas=>true to your route to bypass Facebook on the form POST and  
then redirect after the upload. You will probably need to include the  
fb_sig parameters in your form.

Mike

On Dec 8, 2007, at 12:51 PM, Dustin Anderson wrote:
> Hi All,
>
> I''m trying to use a form to upload a photo that I will save using
> attachment_fu.  I''m very new to Facebookr so I apologize if this
is
> covered somewhere, but I''m kind of stumped.
>
> Here''s what I''m doing now:
> <% facebook_form_for(:my_object, :url => { :action =>  
> ''upload_photo'', :id => params[:id] }, :html => {
:multipart =>
> true }) do |f| -%>
>
> 	<%= radio_button_tag ''my_object[my_param]'',
"value" %>
>
> 	<%= file_field_tag "photo[uploaded_data]" %>
>
> <% end %>
>
> Now that I''ve typed this out I''m realizing that the  
> facebook_form_for probably isn''t doing anything for me since
i''m not
> using the f. helpers, but I have two models that I''m trying to
save
> data for.nonetheless, here''s my problem:
>
> The params are passing
"photo"=>{"uploaded_data"=>"sample.jpg"} and
> the error that I''m getting is:
> NoMethodError (undefined method `content_type'' for  
> "sample.jpg":String)
>
> Again, I''m using attachment_fu to handle the image processing.  It
> was working before I tried porting it over to facebook so I think I  
> have attachment_fu configured properly.
>
> Any ideas on what I''m missing?
>
> Many thanks,
> Dustin
>
>
> _______________________________________________
> Facebooker-talk mailing list
> Facebooker-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/facebooker-talk
--
Mike Mangino
http://www.elevatedrails.com

Awesome, thanks Mike - that was a huge help.   Now the file is saving
to the database and I have it redirecting.  I have to say that the way
I have it working seems like it''s really hack-ey.

Here''s basically what my CONTROLLER CODE looks like:
####Controller:###
  def create
    @my_object = MyObject.new
        @my_object.photo = Photo.new(params[:photo])
        @my_object.photo.save
    if @comparison.save
#### AND THIS IS WHERE IT GETS WEIRD- DO I REALLY HAVE TO PASS ALL
THESE PARAMS ALONG?###
      redirect_to :action => "get_other_pic",
      :fb_sig => params[:fb_sig],
      :fb_sig_time => params[:fb_sig_time],
      :fb_sig_session_key => params[:fb_sig_session_key],
      :fb_sig_expires => params[:fb_sig_expires],
      :fb_sig_added => params[:fb_sig_added],
      :fb_sig_api_key => params[:fb_sig_api_key],
      :fb_sig_user => params[:fb_sig_user],
      :fb_sig_profile_update_time => params[:fb_sig_profile_update_time],
      :id => @my_object.id,
      :canvas => true
    else
      render :action => :new
    end
  end
###END CONTROLLER###
Oh, and here''s basically what MY VIEW LOOKS LIKE:
#FYI, :canvas => false worked for me, not :canvas => true - maybe I
misunderstood?

<% form_for(:comparison,
:url => { :controller => ''my_object'', :action =>
''update'', :canvas =>
false, :only_path => false, :host => "www.myhost.com" },
:html => { :multipart => true }) do |f| -%>

Thanks again, I was really wondering if I was barking up the wrong
tree... and I wasn''t getting anywhere for a while.  And now, my only
question is - am I missing something?  It seems like passing all these
fb_sig_* parameters isn''t very DRY and Facebookr might have some
abstraction for it?

-Dustin

On Dec 8, 2007 6:20 PM, Mike Mangino <mmangino at elevatedrails.com>
wrote:
> Facebook doesn''t pass through multipart uploads. You can add
> a :canvas=>true to your route to bypass Facebook on the form POST and
> then redirect after the upload. You will probably need to include the
> fb_sig parameters in your form.
>
> Mike
>
>
> On Dec 8, 2007, at 12:51 PM, Dustin Anderson wrote:
>
> > Hi All,
> >
> > I''m trying to use a form to upload a photo that I will save
using
> > attachment_fu.  I''m very new to Facebookr so I apologize if
this is
> > covered somewhere, but I''m kind of stumped.
> >
> > Here''s what I''m doing now:
> > <% facebook_form_for(:my_object, :url => { :action =>
> > ''upload_photo'', :id => params[:id] }, :html =>
{ :multipart =>
> > true }) do |f| -%>
> >
> >       <%= radio_button_tag ''my_object[my_param]'',
"value" %>
> >
> >       <%= file_field_tag "photo[uploaded_data]" %>
> >
> > <% end %>
> >
> > Now that I''ve typed this out I''m realizing that the
> > facebook_form_for probably isn''t doing anything for me since
i''m not
> > using the f. helpers, but I have two models that I''m trying
to save
> > data for.nonetheless, here''s my problem:
> >
> > The params are passing
"photo"=>{"uploaded_data"=>"sample.jpg"} and
> > the error that I''m getting is:
> > NoMethodError (undefined method `content_type'' for
> > "sample.jpg":String)
> >
> > Again, I''m using attachment_fu to handle the image
processing.  It
> > was working before I tried porting it over to facebook so I think I
> > have attachment_fu configured properly.
> >
> > Any ideas on what I''m missing?
> >
> > Many thanks,
> > Dustin
> >
> >
> > _______________________________________________
> > Facebooker-talk mailing list
> > Facebooker-talk at rubyforge.org
> > http://rubyforge.org/mailman/listinfo/facebooker-talk
>
> --
> Mike Mangino
> http://www.elevatedrails.com
>
>

Ahh, so it turns out I didn''t need any of the fb_sig stuff at all - I
just needed to tell it canvas => false on the file upload (in the
form) and then canvas => true in the redirect (in the controller)-
again, thanks Mike.

Slowly but surely, I''m starting to get this...

Now, here''s another quirk - there seems to be a problem with the rails
image_tag helper not working with the location of my file uploads...

this may be just a problem with how attachment_fu saves attachments,
and facebook''s requirement to have the relative_url_root.

I have attachment_fu putting the model attachments in public/system/photos

In the view, when I call <%= image_tag @my_model.photo.public_filename
%>, it renders
 http://www.myhost.com/my_facebook_app/system/photos/0000/0083/uploaded_image.jpg

But, the file isn''t there, the file is in:
 http://www.myhost.com/system/photos/0000/0083/uploaded_image.jpg

It''s the same path without the FACEBOOKER_RELATIVE_URL_ROOT, which for
me is:
ENV[''FACEBOOKER_RELATIVE_URL_ROOT''] =
''my_facebook_app''

Anyway, I had to make a helper to sub out the /my_facebook_app/ of the
path.  It seems like image_tag should just work since
facebook_image_tag says its deprecated...

but there seems to be a quirk if you are using something like
attachment_fu which doesn''t use
ENV[''FACEBOOKER_RELATIVE_URL_ROOT''].

If anyone has any knowledge of what''s happening here, I''d love
to get
some advice or help... for now, I''m just going to stick with my helper
which seems to be working.

Thanks again,
Dustin

On Dec 9, 2007 12:19 AM, Dustin Anderson <dkanderson at gmail.com>
wrote:
> Awesome, thanks Mike - that was a huge help.   Now the file is saving
> to the database and I have it redirecting.  I have to say that the way
> I have it working seems like it''s really hack-ey.
>
> Here''s basically what my CONTROLLER CODE looks like:
> ####Controller:###
>   def create
>     @my_object = MyObject.new
>         @my_object.photo = Photo.new(params[:photo])
>         @my_object.photo.save
>     if @comparison.save
> #### AND THIS IS WHERE IT GETS WEIRD- DO I REALLY HAVE TO PASS ALL
> THESE PARAMS ALONG?###
>       redirect_to :action => "get_other_pic",
>       :fb_sig => params[:fb_sig],
>       :fb_sig_time => params[:fb_sig_time],
>       :fb_sig_session_key => params[:fb_sig_session_key],
>       :fb_sig_expires => params[:fb_sig_expires],
>       :fb_sig_added => params[:fb_sig_added],
>       :fb_sig_api_key => params[:fb_sig_api_key],
>       :fb_sig_user => params[:fb_sig_user],
>       :fb_sig_profile_update_time =>
params[:fb_sig_profile_update_time],
>       :id => @my_object.id,
>       :canvas => true
>     else
>       render :action => :new
>     end
>   end
> ###END CONTROLLER###
> Oh, and here''s basically what MY VIEW LOOKS LIKE:
> #FYI, :canvas => false worked for me, not :canvas => true - maybe I
> misunderstood?
>
> <% form_for(:comparison,
> :url => { :controller => ''my_object'', :action =>
''update'', :canvas =>
> false, :only_path => false, :host => "www.myhost.com" },
> :html => { :multipart => true }) do |f| -%>
>
> Thanks again, I was really wondering if I was barking up the wrong
> tree... and I wasn''t getting anywhere for a while.  And now, my
only
> question is - am I missing something?  It seems like passing all these
> fb_sig_* parameters isn''t very DRY and Facebookr might have some
> abstraction for it?
>
> -Dustin
>
>
> On Dec 8, 2007 6:20 PM, Mike Mangino <mmangino at elevatedrails.com>
wrote:
> > Facebook doesn''t pass through multipart uploads. You can add
> > a :canvas=>true to your route to bypass Facebook on the form POST
and
> > then redirect after the upload. You will probably need to include the
> > fb_sig parameters in your form.
> >
> > Mike
> >
> >
> > On Dec 8, 2007, at 12:51 PM, Dustin Anderson wrote:
> >
> > > Hi All,
> > >
> > > I''m trying to use a form to upload a photo that I will
save using
> > > attachment_fu.  I''m very new to Facebookr so I apologize
if this is
> > > covered somewhere, but I''m kind of stumped.
> > >
> > > Here''s what I''m doing now:
> > > <% facebook_form_for(:my_object, :url => { :action =>
> > > ''upload_photo'', :id => params[:id] }, :html
=> { :multipart =>
> > > true }) do |f| -%>
> > >
> > >       <%= radio_button_tag
''my_object[my_param]'', "value" %>
> > >
> > >       <%= file_field_tag "photo[uploaded_data]"
%>
> > >
> > > <% end %>
> > >
> > > Now that I''ve typed this out I''m realizing that
the
> > > facebook_form_for probably isn''t doing anything for me
since i''m not
> > > using the f. helpers, but I have two models that I''m
trying to save
> > > data for.nonetheless, here''s my problem:
> > >
> > > The params are passing
"photo"=>{"uploaded_data"=>"sample.jpg"} and
> > > the error that I''m getting is:
> > > NoMethodError (undefined method `content_type'' for
> > > "sample.jpg":String)
> > >
> > > Again, I''m using attachment_fu to handle the image
processing.  It
> > > was working before I tried porting it over to facebook so I think
I
> > > have attachment_fu configured properly.
> > >
> > > Any ideas on what I''m missing?
> > >
> > > Many thanks,
> > > Dustin
> > >
> > >
> > > _______________________________________________
> > > Facebooker-talk mailing list
> > > Facebooker-talk at rubyforge.org
> > > http://rubyforge.org/mailman/listinfo/facebooker-talk
> >
> > --
> > Mike Mangino
> > http://www.elevatedrails.com
> >
> >
>