From: macaco <macacoangel@...>
Date: 2008-01-10T03:12:07+09:00
Subject: Re: Create image, send to rails

------=_Part_10185_18960868.1199902332468
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

Thanks Juan Matias, but it was a little more trickier, had to download the
ImageMagick from ftp://ftp.imagemagick.org/pub/ImageMagick/ because debian
gutsy only have the 6.2.4 version, but ruby works with 6.3

anyway, I have this in my controller:

class GenerateController < ApplicationController
  require 'RMagick'
  include Magick
  def index
  end

  def generate
    render :text =3D> "<h1>hello world</h1><img src=3D'/generate/img/1' />"
  end

  def img
    imgl =3D Magick::Image.new(100, 100) { self.background_color =3D 'red' =
}
    img.format =3D 'JPG'
    send_data(imgl.to_blob, {:type =3D> 'image/jpeg', :disposition =3D>
'inline'})
  end

end

but I get this error in the browser:

   SystemStackError        in GenerateController#img
stack level too deep


RAILS_ROOT: ./script/../config/..
            Application Trace |            Framework Trace |            Ful=
l
Trace
/devel/rtst/app/controllers/generate_controller.rb:13:in `img'
/devel/rtst/app/controllers/generate_controller.rb:13:in `img'

Any help?

On 1/8/08, Juan Mat=EDas <jmrepetti@gmail.com> wrote:
>
> It seems that you don't have building tools, try installing ruby1.8-devan=
d
> build-essential, libgraphicsmagick1-dev packages.
>
> Juan Matias
>
>
> On Jan 8, 2008 1:16 PM, macaco <macacoangel@gmail.com> wrote:
>
> > On Jan 5, 2008 4:30 PM, Bira <u.alberton@gmail.com> wrote:
> >
> > > On Jan 5, 2008 12:21 PM, macaco <macacoangel@gmail.com> wrote:
> > > > Hi, I'm new to this language, so any help will be welcome.
> > > >
> > > > I'm trying to create images at random, not a problem with this, and
> I
> > > can do
> > > > it on ruby alone saving the image to the filesystem and watching it
> > > later on
> > > > a viewer.
> > > >
> > > > Buy when I try to use RoR, like creating the image on the fly, not
> > > saving it
> > > > to the filesystem, and presenting it on the browser.... well, i get
> > > > confused.  All I can do so far, it's to show the image i have
> > generated
> > > on
> > > > ruby before.
> > > >
> > > > btw, i'm using RMagick to do the trick.
> > > >
> > >
> > > You can probably use send_data in your controller for this.
> > >
> > >
> >
> http://api.rubyonrails.org/classes/ActionController/Streaming.html#M00022=
9
> > >
> > >
> > >
> > Thanks, that was helping, but as I was having troubles with rmagic and
> > windows, i decided to switch to linux
> >
> > problem is, after i installed everything listed on
> > http://rmagick.rubyforge.org/install-linux.html, trought apt-get on
> > debian,
> > once I try to run the gem, this is what I get:
> >
> > *macaco@ig88:/devel/rtst$ sudo gem install rmagick -r
> > Building native extensions.  This could take a while...
> > ERROR:  While executing gem ... (Gem::Installer::ExtensionBuildError)
> >    ERROR: Failed to build gem native extension.
> >
> > ruby extconf.rb install rmagick -r
> > extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)
> >        from extconf.rb:1
> >
> >
> > Gem files will remain installed in /var/lib/gems/1.8/gems/rmagick-
> 2.0.0for
> > inspection.
> > Results logged to /var/lib/gems/1.8/gems/rmagick-2.0.0
> > /ext/RMagick/gem_make.out*
> >
> > Any help?
> >
>
>
>
> --
> =ABQuien nunca ha cometido un error nunca ha probado algo nuevo.=BB
>

------=_Part_10185_18960868.1199902332468--