From: "Juan Matías" <jmrepetti@...>
Date: 2008-01-10T22:32:02+09:00
Subject: Re: Create image, send to rails

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

On Jan 9, 2008 3:12 PM, macaco <macacoangel@gmail.com> wrote:

> Thanks Juan Matias, but it was a little more trickier, had to download th=
e
> ImageMagick from ftp://ftp.imagemagick.org/pub/ImageMagick/ because debia=
n
> 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 |
>  Full
> 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-devand
> > 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, no=
t
> > > > 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 an=
d
> > > 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
> >
>



--=20
=ABQuien nunca ha cometido un error nunca ha probado algo nuevo.=BB

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