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Erwin

2010-Sep-14 17:02 UTC

how to send raw data from a temp file as a base64 value ?

I am trying to send data from a remote file attachment....
-------
attachment[''url''] =
"http://www.mydomain.com/resource/download/54643"

I wrote a class RemoteFile < ::Tempfile to fetch to remote data
------
remote_file = RemoteFile.new(attachment[''url''] )
so, I get a tempfile
 >> #<File:/var/folders/NK/NKfWCW3eEVCg0ERnpPsnME+++TI/-Tmp-/
93806edfbb0daf7303347d7faaffc2d0f5b22a1d20100914-5545-1y66mt8-0>

now I would like to pass the content of this temp file as a base64
value
...
ticketing_xml <<  "<value><base64>#{ tmp_data
}</base64></value>"
...

how should I do write the  tmp_data  ?

  should I use  :  open(remote_file ).read

thanks for your suggestions

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Philip Hallstrom

2010-Sep-14 17:39 UTC

head link

Re: how to send raw data from a temp file as a base64 value ?

> I am trying to send data from a remote file attachment....
> -------
> attachment[''url''] =
"http://www.mydomain.com/resource/download/54643"
> 
> I wrote a class RemoteFile < ::Tempfile to fetch to remote data
> ------
> remote_file = RemoteFile.new(attachment[''url''] )
> so, I get a tempfile
>>> #<File:/var/folders/NK/NKfWCW3eEVCg0ERnpPsnME+++TI/-Tmp-/
> 93806edfbb0daf7303347d7faaffc2d0f5b22a1d20100914-5545-1y66mt8-0>
> 
> now I would like to pass the content of this temp file as a base64
> value
> ...
> ticketing_xml <<  "<value><base64>#{ tmp_data
}</base64></value>"
> ...
> 
> how should I do write the  tmp_data  ?
> 
>  should I use  :  open(remote_file ).read
Sure.  If these remote files are big, your Rails processes are going to eat a
lot of ram.

Instead of reading things into a temp file first, look into open-uri so you can
simply read it directly from the remote host into your xml string...

-philip

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Erwin

2010-Sep-14 22:00 UTC

head link

Re: how to send raw data from a temp file as a base64 value ?

Thanks Philip, this is better .. it seems a little bit more
complicated that I thought

I need to get a file that I download from this url....  this not the
file url, but an html page to download the file
attachment[''url''] ::
"http://www.pivotaltracker.com/resource/download/
579633"

and then pass the encoded content of the downloaded  file  as data
into the xml , so it''ll become an attachment for another ticketing
system....

=>, the  open(remote_file ).read  doesn''t give me the file, but the
html...

so, I need to to :
1 - ''execute''
http://www.pivotaltracker.com/resource/download/579633
to get and store the file locally
2- read the file locally , encode it and pass the content as a value
in the xml


any idea on how to do that ?





On 14 sep, 19:39, Philip Hallstrom <phi...-LSG90OXdqQE@public.gmane.org>
wrote:> > I am trying to send data from a remote file attachment....
> > -------
> > attachment[''url''] =
"http://www.mydomain.com/resource/download/54643"
>
> > I wrote a class RemoteFile < ::Tempfile to fetch to remote data
> > ------
> > remote_file = RemoteFile.new(attachment[''url''] )
> > so, I get a tempfile
> >>> #<File:/var/folders/NK/NKfWCW3eEVCg0ERnpPsnME+++TI/-Tmp-/
> > 93806edfbb0daf7303347d7faaffc2d0f5b22a1d20100914-5545-1y66mt8-0>
>
> > now I would like to pass the content of this temp file as a base64
> > value
> > ...
> > ticketing_xml <<  "<value><base64>#{ tmp_data
}</base64></value>"
> > ...
>
> > how should I do write the  tmp_data  ?
>
> >  should I use  :  open(remote_file ).read
>
> Sure.  If these remote files are big, your Rails processes are going to eat
a lot of ram.
>
> Instead of reading things into a temp file first, look into open-uri so you
can simply read it directly from the remote host into your xml string...
>
> -philip
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Philip Hallstrom

2010-Sep-15 16:13 UTC

head link

Re: Re: how to send raw data from a temp file as a base64 value ?

On Sep 14, 2010, at 3:00 PM, Erwin wrote:
> Thanks Philip, this is better .. it seems a little bit more
> complicated that I thought
> 
> I need to get a file that I download from this url....  this not the
> file url, but an html page to download the file
> attachment[''url''] ::
"http://www.pivotaltracker.com/resource/download/
> 579633"
> 
> and then pass the encoded content of the downloaded  file  as data
> into the xml , so it''ll become an attachment for another ticketing
> system....
> 
> =>, the  open(remote_file ).read  doesn''t give me the file, but
the
> html...
> 
> so, I need to to :
> 1 - ''execute''
http://www.pivotaltracker.com/resource/download/579633
> to get and store the file locally
I''m not understanding what this step means...  I''ve never used
pivotaltracker though..  does going to that page result in a file being
downloaded?  Is the download the HTTP response?  Or triggered somehow else?  If
it''s the response open-uri should be able to handle it.  I
don''t recall how well open-uri handles redirects so double check that.

-p

> 2- read the file locally , encode it and pass the content as a value
> in the xml
> 
> 
> any idea on how to do that ?
> 
> 
> 
> 
> 
> On 14 sep, 19:39, Philip Hallstrom
<phi...-LSG90OXdqQE@public.gmane.org> wrote:
>>> I am trying to send data from a remote file attachment....
>>> -------
>>> attachment[''url''] =
"http://www.mydomain.com/resource/download/54643"
>> 
>>> I wrote a class RemoteFile < ::Tempfile to fetch to remote data
>>> ------
>>> remote_file = RemoteFile.new(attachment[''url''] )
>>> so, I get a tempfile
>>>>>
#<File:/var/folders/NK/NKfWCW3eEVCg0ERnpPsnME+++TI/-Tmp-/
>>> 93806edfbb0daf7303347d7faaffc2d0f5b22a1d20100914-5545-1y66mt8-0>
>> 
>>> now I would like to pass the content of this temp file as a base64
>>> value
>>> ...
>>> ticketing_xml <<  "<value><base64>#{
tmp_data }</base64></value>"
>>> ...
>> 
>>> how should I do write the  tmp_data  ?
>> 
>>>  should I use  :  open(remote_file ).read
>> 
>> Sure.  If these remote files are big, your Rails processes are going to
eat a lot of ram.
>> 
>> Instead of reading things into a temp file first, look into open-uri so
you can simply read it directly from the remote host into your xml string...
>> 
>> -philip
> 
> -- 
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> 
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Erwin

2010-Sep-15 17:15 UTC

head link

Re: how to send raw data from a temp file as a base64 value ?

Hi Philip

this url is a route to Pivotal web app...
when I use "http://www.pivotaltracker.com/resource/download/579633"
in my browser, I get a corresponding  file attachment downloaded...
so, this is an url to Pivotal web app, which execute the
action :download in the controller Resource send the file .... which
open in my browser

so I cannot use this url as a file location url  (with  open-uri ) and
I don''t get the file location ...
seems to be redirected to an amazon S3 location where the file is
located....  ( yes, the response is You have been redirected blah
blah)


On 15 sep, 18:13, Philip Hallstrom <phi...-LSG90OXdqQE@public.gmane.org>
wrote:> On Sep 14, 2010, at 3:00 PM, Erwin wrote:
>
>
>
>
>
> > Thanks Philip, this is better .. it seems a little bit more
> > complicated that I thought
>
> > I need to get a file that I download from this url....  this not the
> > file url, but an html page to download the file
> > attachment[''url''] ::
"http://www.pivotaltracker.com/resource/download/
> > 579633"
>
> > and then pass the encoded content of the downloaded  file  as data
> > into the xml , so it''ll become an attachment for another
ticketing
> > system....
>
> > =>, the  open(remote_file ).read  doesn''t give me the
file, but the
> > html...
>
> > so, I need to to :
> > 1 -
''execute''http://www.pivotaltracker.com/resource/download/579633
> > to get and store the file locally
>
> I''m not understanding what this step means...  I''ve never
used pivotaltracker though..  does going to that page result in a file being
downloaded?  Is the download the HTTP response?  Or triggered somehow else?  If
it''s the response open-uri should be able to handle it.  I
don''t recall how well open-uri handles redirects so double check that.
>
> -p
>
>
>
> > 2- read the file locally , encode it and pass the content as a value
> > in the xml
>
> > any idea on how to do that ?
>
> > On 14 sep, 19:39, Philip Hallstrom
<phi...-LSG90OXdqQE@public.gmane.org> wrote:
> >>> I am trying to send data from a remote file attachment....
> >>> -------
> >>> attachment[''url''] =
"http://www.mydomain.com/resource/download/54643"
>
> >>> I wrote a class RemoteFile < ::Tempfile to fetch to remote
data
> >>> ------
> >>> remote_file =
RemoteFile.new(attachment[''url''] )
> >>> so, I get a tempfile
> >>>>>
#<File:/var/folders/NK/NKfWCW3eEVCg0ERnpPsnME+++TI/-Tmp-/
> >>>
93806edfbb0daf7303347d7faaffc2d0f5b22a1d20100914-5545-1y66mt8-0>
>
> >>> now I would like to pass the content of this temp file as a
base64
> >>> value
> >>> ...
> >>> ticketing_xml <<  "<value><base64>#{
tmp_data }</base64></value>"
> >>> ...
>
> >>> how should I do write the  tmp_data  ?
>
> >>>  should I use  :  open(remote_file ).read
>
> >> Sure.  If these remote files are big, your Rails processes are
going to eat a lot of ram.
>
> >> Instead of reading things into a temp file first, look into
open-uri so you can simply read it directly from the remote host into your xml
string...
>
> >> -philip
>
> > --
> > 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
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> > For more options, visit this group
athttp://groups.google.com/group/rubyonrails-talk?hl=en.
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David Kahn

2010-Sep-15 17:17 UTC

head link

Re: Re: how to send raw data from a temp file as a base64 value ?

I maybe am not understanding what you need, but if you are trying to do this
where you have tmp_data in memory and need to encode tmp_data

ticketing_xml <<  "<value><base64>#{ tmp_data
}</base64></value>"

Then do

require ''base64''
ticketing_xml <<  "<value><base64>#{
Base64.encode64(tmp_data)
}</base64></value>"



On Wed, Sep 15, 2010 at 11:13 AM, Philip Hallstrom
<philip-LSG90OXdqQE@public.gmane.org> wrote:
>
> On Sep 14, 2010, at 3:00 PM, Erwin wrote:
>
> > Thanks Philip, this is better .. it seems a little bit more
> > complicated that I thought
> >
> > I need to get a file that I download from this url....  this not the
> > file url, but an html page to download the file
> > attachment[''url''] ::
"http://www.pivotaltracker.com/resource/download/
> > 579633"
> >
> > and then pass the encoded content of the downloaded  file  as data
> > into the xml , so it''ll become an attachment for another
ticketing
> > system....
> >
> > =>, the  open(remote_file ).read  doesn''t give me the
file, but the
> > html...
> >
> > so, I need to to :
> > 1 - ''execute''
http://www.pivotaltracker.com/resource/download/579633
> > to get and store the file locally
>
> I''m not understanding what this step means...  I''ve never
used
> pivotaltracker though..  does going to that page result in a file being
> downloaded?  Is the download the HTTP response?  Or triggered somehow else?
>  If it''s the response open-uri should be able to handle it.  I
don''t recall
> how well open-uri handles redirects so double check that.
>
> -p
>
>
> > 2- read the file locally , encode it and pass the content as a value
> > in the xml
> >
> >
> > any idea on how to do that ?
> >
> >
> >
> >
> >
> > On 14 sep, 19:39, Philip Hallstrom
<phi...-LSG90OXdqQE@public.gmane.org> wrote:
> >>> I am trying to send data from a remote file attachment....
> >>> -------
> >>> attachment[''url''] =
"http://www.mydomain.com/resource/download/54643"
> >>
> >>> I wrote a class RemoteFile < ::Tempfile to fetch to remote
data
> >>> ------
> >>> remote_file =
RemoteFile.new(attachment[''url''] )
> >>> so, I get a tempfile
> >>>>>
#<File:/var/folders/NK/NKfWCW3eEVCg0ERnpPsnME+++TI/-Tmp-/
> >>>
93806edfbb0daf7303347d7faaffc2d0f5b22a1d20100914-5545-1y66mt8-0>
> >>
> >>> now I would like to pass the content of this temp file as a
base64
> >>> value
> >>> ...
> >>> ticketing_xml <<  "<value><base64>#{
tmp_data }</base64></value>"
> >>> ...
> >>
> >>> how should I do write the  tmp_data  ?
> >>
> >>>  should I use  :  open(remote_file ).read
> >>
> >> Sure.  If these remote files are big, your Rails processes are
going to
> eat a lot of ram.
> >>
> >> Instead of reading things into a temp file first, look into
open-uri so
> you can simply read it directly from the remote host into your xml
string...
> >>
> >> -philip
> >
> > --
> > 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
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> > 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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> .
> For more options, visit this group at
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>
>
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Rails - Sep 2010 - how to send raw data from a temp file as a base64 value ?

how to send raw data from a temp file as a base64 value ?

Re: how to send raw data from a temp file as a base64 value ?

Re: how to send raw data from a temp file as a base64 value ?

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Re: how to send raw data from a temp file as a base64 value ?

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