> Yes, but not with Tempfile. There wont be any conflicts?
> Hash the video data, store your thumbnail as $HASH.png, keep a reference to > this file Can you give me an example of how I would $HASH a file? How do you mean "keep a reference to this file"? On Nov 12, 4:31 am, Brian Troutwine <[email protected]> wrote: > Yes, but not with Tempfile. Hash the video data, store your thumbnail > as $HASH.png, keep a reference to this file and be sure to delete it > when the user performs such actions as make the thumbnail no longer > necessary. > > On Thu, Nov 11, 2010 at 3:29 PM, Christian Fazzini > > <[email protected]> wrote: > > Basically I need to create a new tempfile with a png extension. Is > > this possible? > > > On Nov 12, 4:21 am, Christian Fazzini <[email protected]> > > wrote: > >> No, the following saves the temp file. > > >> @video.attachment_thumbnail = > >> File.open(File.expand_path(tmp.path)) > > >> However, File.expand_path(tmp.path) saves the file in the file system > >> as thumb.png20101111-989-1pt72my > > >> Ideally, I would like it to save it as thumb20101111-989-1pt72my.png > >> or, better, just thumb.png > > >> On Nov 12, 4:12 am, Brian Troutwine <[email protected]> wrote: > > >> > I'm confused. You're creating a tempfile and then keeping a reference > >> > to it in your database? > > >> > On Thu, Nov 11, 2010 at 3:06 PM, Christian Fazzini > > >> > <[email protected]> wrote: > >> > > Ok that makes sense. Thanks Brian. > > >> > > On the same topic... > > >> > > How would I create a temp file with .png extension in the end. > > >> > > tmp = Tempfile.new([ 'thumb', 'png' ].compact.join(".")) > > >> > You can't use Tempfile to do this. Well, you _can_ but you'll need to > >> > close the file--without unlinking it!--and then move the file created > >> > to the new location you want. At that points, you're better off just > >> > giving thumbnails a sequential identifier, or use their hash. Destroy > >> > the thumbnail file once you no longer need it. > > >> > > Whenever it creates a temp file, it creates it as such: > >> > > thumb.png20101111-989-1pt72my, instead of > >> > > thumb20101111-989-1pt72my.png > > >> > > If I try to save this via Active Record, with > > >> > > @video.attachment_thumbnail = > >> > > File.open("#{File.expand_path(tmp.path)}"), > > >> > > It will save the file in the file system without the extension, which > >> > > makes it impossible to read on the browser, unless I explicitly set > >> > > the extension. > > >> > > On Nov 12, 3:54 am, Brian Troutwine <[email protected]> wrote: > >> > >> Hi Christian, > > >> > >> Not by the end of the day, no. Each tempfile will be unlinked as soon > >> > >> as you close it. Your example code didn't have the line > > >> > >> > dst.close(unlink_now=true) > > >> > >> in it. You may also use dst.close!() to the same effect. > > >> > >> -- > >> > >> Brian > > >> > >> On Thu, Nov 11, 2010 at 2:49 PM, Christian Fazzini > > >> > >> <[email protected]> wrote: > >> > >> > Hi Brian, > > >> > >> > Just to keep things clear. By the end of the day, /var/folders/uL/ > >> > >> > uL0bYOOZEZaJH5E+BmDJVE+++TI/-Tmp-/ <-- temp dir _IS_ supposed to be > >> > >> > empty. Is this correct? > > >> > >> > On Nov 12, 3:35 am, Brian Troutwine <[email protected]> wrote: > >> > >> >> When you close the Tempfile, be sure to pass true for unlink_now. > > >> > >> >>http://ruby-doc.org/stdlib/libdoc/tempfile/rdoc/classes/Tempfile.html... > > >> > >> >> On Thu, Nov 11, 2010 at 2:33 PM, Christian Fazzini > > >> > >> >> <[email protected]> wrote: > >> > >> >> > In video controller, create action. I am using FFMPEG to > >> > >> >> > generate a > >> > >> >> > thumbnail of videos that are uploaded. > > >> > >> >> > The tempfile is created as such: > > >> > >> >> > def create > >> > >> >> > ...... > >> > >> >> > dst = Tempfile.new(basename) > >> > >> >> > dst.binmode > > >> > >> >> > system("ffmpeg -itsoffset -4 -i #{file.path} -y -vcodec mjpeg - > >> > >> >> > vframes 1 -an -f rawvideo #{File.expand_path(dst.path)}.png") > >> > >> >> > .... > >> > >> >> > end > > >> > >> >> > As you can see from above, ffmpeg outputs a file to the var dst > >> > >> >> > which > >> > >> >> > is an instance of Tempfile. In console, when I do: > > >> > >> >> > ls /var/folders/uL/uL0bYOOZEZaJH5E+BmDJVE+++TI/-Tmp-/ > > >> > >> >> > thumb20101111-989-1gflwhr.png > >> > >> >> > thumb20101111-989-1pt72my.png > >> > >> >> > thumb20101111-989-kjcsgd.png > >> > >> >> > thumb20101111-989-3ocf15.png > >> > >> >> > thumb20101111-989-10azwnn.png > >> > >> >> > thumb20101111-989-7x11w7.png > > >> > >> >> > I see a bunch of files in the directory. It seems that rails did > >> > >> >> > not > >> > >> >> > automatically delete these temp files. Should I manually delete > >> > >> >> > these > >> > >> >> > files? > > >> > >> >> > I am worried that, if my temp dir fills up with temp files, it'll > >> > >> >> > eventually take up most of the server space... > > >> > >> >> > Your thoughts on this matter? > > >> > >> >> > -- > >> > >> >> > 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 > >> > >> >> > [email protected]. > >> > >> >> > To unsubscribe from this group, send email to > >> > >> >> > [email protected]. > >> > >> >> > 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 > >> > >> > [email protected]. > >> > >> > To unsubscribe from this group, send email to > >> > >> > [email protected]. > >> > >> > 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 [email protected]. > >> > > To unsubscribe from this group, send email to > >> > > [email protected]. > >> > > 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 [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > 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. 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