Hi all, I''m finishing up on a project, which has a model with an attached PDF file. I''m using Paperclip to process the attachment. What I''d like to do is to enable users to cut (remove) the first x pages from the PDF-file, but I have no idea how to do that. Is there a gem that can do this? And how would this integrate with Paperclip? Thank you very much. Kind regards, Jaap Haagmans -- 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Take a look at Paperclip Processors
Paperclip could use custom processors to do non-standart stuff with
attachments. You specify your processor name like:
has_attached_file :file,
:styles => {:original => {:processors => [:pdf_processor]}}
and you need to have a class in
lib/paperclip_processors/pdf_processor.rb like
module Paperclip
class PdfProcessor < Paperclip::Processor
...
end
end
there''s some examples in documentation. The thing is you get an
uploaded
@file in your processor, and in the end you need to return your changed
@new_file back. You could do anything with it inside.
Like in your case, you can create some tmp_dir, process the @file.path with
something like `pdftk` to your tmp_dir/new_file_name.pdf, and return
@new_file = File.open(tmp_dir/new_file_name.pdf) to Paperclip to store in
path you specified in the Model. Then you just delete tmp_dir with
after_create filter or with cron job.
On Sun, Apr 25, 2010 at 5:57 PM, jhaagmans
<jaap.haagmans-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Hi all,
>
> I''m finishing up on a project, which has a model with an attached
PDF
> file. I''m using Paperclip to process the attachment.
>
> What I''d like to do is to enable users to cut (remove) the first x
> pages from the PDF-file, but I have no idea how to do that. Is there a
> gem that can do this? And how would this integrate with Paperclip?
>
> Thank you very much.
>
> Kind regards,
> Jaap Haagmans
>
> --
> 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To unsubscribe from this group, send email to
>
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> .
> For more options, visit this group at
> http://groups.google.com/group/rubyonrails-talk?hl=en.
>
>
--
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Hi Vladimir, Thanks. The bit about paperclip processors is very helpful! I''ve looked at pdftk though and couldn''t find how to cut pages from PDF files. Am I overlooking something? The idea is that we will receive many different kinds of PDF-files including (for example) author information that the author doesn''t want to share. If this information is on the first two pages, we''d like the author to be able to say "cut the first two pages out and save it". Thanks again. On 25 apr, 13:50, Vladimir Rybas <vladimirry...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Take a look at Paperclip Processors > Paperclip could use custom processors to do non-standart stuff with > attachments. You specify your processor name like: > > has_attached_file :file, > :styles => {:original => {:processors => [:pdf_processor]}} > > and you need to have a class in > lib/paperclip_processors/pdf_processor.rb like > > module Paperclip > class PdfProcessor < Paperclip::Processor > ... > end > end > > there''s some examples in documentation. The thing is you get an uploaded > @file in your processor, and in the end you need to return your changed > @new_file back. You could do anything with it inside. > > Like in your case, you can create some tmp_dir, process the @file.path with > something like `pdftk` to your tmp_dir/new_file_name.pdf, and return > @new_file = File.open(tmp_dir/new_file_name.pdf) to Paperclip to store in > path you specified in the Model. Then you just delete tmp_dir with > after_create filter or with cron job. > > > > On Sun, Apr 25, 2010 at 5:57 PM, jhaagmans <jaap.haagm...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > Hi all, > > > I''m finishing up on a project, which has a model with an attached PDF > > file. I''m using Paperclip to process the attachment. > > > What I''d like to do is to enable users to cut (remove) the first x > > pages from the PDF-file, but I have no idea how to do that. Is there a > > gem that can do this? And how would this integrate with Paperclip? > > > Thank you very much. > > > Kind regards, > > Jaap Haagmans > > > -- > > 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > > To unsubscribe from this group, send email to > > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> > > . > > For more options, visit this group at > >http://groups.google.com/group/rubyonrails-talk?hl=en. > > -- > 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. > For more options, visit this group athttp://groups.google.com/group/rubyonrails-talk?hl=en.-- 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@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.
I don''t think that you can explicitly do that with pdftk, but you can do ''burst'' to break the pdf out into lots of single page documents, and then ''cat'' to combine the pages that you want in the final document. Simon On Sun, 25 Apr 2010 21:46:23 +0800, jhaagmans <jaap.haagmans-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Hi Vladimir, > > Thanks. The bit about paperclip processors is very helpful! > > I''ve looked at pdftk though and couldn''t find how to cut pages from > PDF files. Am I overlooking something? The idea is that we will > receive many different kinds of PDF-files including (for example) > author information that the author doesn''t want to share. If this > information is on the first two pages, we''d like the author to be able > to say "cut the first two pages out and save it". > > Thanks again. > > On 25 apr, 13:50, Vladimir Rybas <vladimirry...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: >> Take a look at Paperclip Processors >> Paperclip could use custom processors to do non-standart stuff with >> attachments. You specify your processor name like: >> >> has_attached_file :file, >> :styles => {:original => {:processors => [:pdf_processor]}} >> >> and you need to have a class in >> lib/paperclip_processors/pdf_processor.rb like >> >> module Paperclip >> class PdfProcessor < Paperclip::Processor >> ... >> end >> end >> >> there''s some examples in documentation. The thing is you get an uploaded >> @file in your processor, and in the end you need to return your changed >> @new_file back. You could do anything with it inside. >> >> Like in your case, you can create some tmp_dir, process the @file.path >> with >> something like `pdftk` to your tmp_dir/new_file_name.pdf, and return >> @new_file = File.open(tmp_dir/new_file_name.pdf) to Paperclip to store >> in >> path you specified in the Model. Then you just delete tmp_dir with >> after_create filter or with cron job. >> >> >> >> On Sun, Apr 25, 2010 at 5:57 PM, jhaagmans <jaap.haagm...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> >> wrote: >> > Hi all, >> >> > I''m finishing up on a project, which has a model with an attached PDF >> > file. I''m using Paperclip to process the attachment. >> >> > What I''d like to do is to enable users to cut (remove) the first x >> > pages from the PDF-file, but I have no idea how to do that. Is there a >> > gem that can do this? And how would this integrate with Paperclip? >> >> > Thank you very much. >> >> > Kind regards, >> > Jaap Haagmans >> >> > -- >> > 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org >> > To unsubscribe from this group, send email to >> > >> rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> >> > . >> > For more options, visit this group at >> >http://groups.google.com/group/rubyonrails-talk?hl=en. >> >> -- >> 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org >> To unsubscribe from this group, send email to >> rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org >> For more options, visit this group >> athttp://groups.google.com/group/rubyonrails-talk?hl=en.-- 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Well, you can use ranges with pdftk. Like $ pdftk in.pdf cat 3-end output out.pdf Catenates pages from third till the end. Here are good examples of pdftk usage http://www.accesspdf.com/pdftk/ On Sun, Apr 25, 2010 at 8:48 PM, Simon Macneall <macneall-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> I don''t think that you can explicitly do that with pdftk, but you can do > ''burst'' to break the pdf out into lots of single page documents, and then > ''cat'' to combine the pages that you want in the final document. > > Simon > > > On Sun, 25 Apr 2010 21:46:23 +0800, jhaagmans <jaap.haagmans-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > wrote: > > Hi Vladimir, >> >> Thanks. The bit about paperclip processors is very helpful! >> >> I''ve looked at pdftk though and couldn''t find how to cut pages from >> PDF files. Am I overlooking something? The idea is that we will >> receive many different kinds of PDF-files including (for example) >> author information that the author doesn''t want to share. If this >> information is on the first two pages, we''d like the author to be able >> to say "cut the first two pages out and save it". >> >> Thanks again. >> >> On 25 apr, 13:50, Vladimir Rybas <vladimirry...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: >> >>> Take a look at Paperclip Processors >>> Paperclip could use custom processors to do non-standart stuff with >>> attachments. You specify your processor name like: >>> >>> has_attached_file :file, >>> :styles => {:original => {:processors => [:pdf_processor]}} >>> >>> and you need to have a class in >>> lib/paperclip_processors/pdf_processor.rb like >>> >>> module Paperclip >>> class PdfProcessor < Paperclip::Processor >>> ... >>> end >>> end >>> >>> there''s some examples in documentation. The thing is you get an uploaded >>> @file in your processor, and in the end you need to return your changed >>> @new_file back. You could do anything with it inside. >>> >>> Like in your case, you can create some tmp_dir, process the @file.path >>> with >>> something like `pdftk` to your tmp_dir/new_file_name.pdf, and return >>> @new_file = File.open(tmp_dir/new_file_name.pdf) to Paperclip to store in >>> path you specified in the Model. Then you just delete tmp_dir with >>> after_create filter or with cron job. >>> >>> >>> >>> On Sun, Apr 25, 2010 at 5:57 PM, jhaagmans <jaap.haagm...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> >>> wrote: >>> > Hi all, >>> >>> > I''m finishing up on a project, which has a model with an attached PDF >>> > file. I''m using Paperclip to process the attachment. >>> >>> > What I''d like to do is to enable users to cut (remove) the first x >>> > pages from the PDF-file, but I have no idea how to do that. Is there a >>> > gem that can do this? And how would this integrate with Paperclip? >>> >>> > Thank you very much. >>> >>> > Kind regards, >>> > Jaap Haagmans >>> >>> > -- >>> > 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<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> >>> <rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%252Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> >>> > >>> > . >>> > For more options, visit this group at >>> >http://groups.google.com/group/rubyonrails-talk?hl=en. >>> >>> -- >>> 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org >>> To unsubscribe from this group, send email to >>> rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> >>> . >>> For more options, visit this group athttp:// >>> groups.google.com/group/rubyonrails-talk?hl=en. >>> >> > -- > 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. 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