# Uninitialized constant ImageList

**URL:** <https://www.ruby-forum.com/t/uninitialized-constant-imagelist/50040>\
**Category:** Rails\
**Created:** [November 18, 2005, 7:11pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-imagelist/50040 "2005-11-18T19:11:18Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cool\_screen\_name900](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c68b51/32.png) [@cool\_screen\_name900](https://www.ruby-forum.com/u/cool_screen_name900)\
**Post date:** [November 18, 2005, 7:11pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-imagelist/50040/1 "2005-11-18T19:11:18Z")

</div>

I’m trying to use RMagick with Rails. I installed RMagick with:  
gem -y install rmagick

It stated it installed successfully, despite some messages that wmf2eps  
wasn’t found (I don’t have  
libwmf installed - it’s not required, is it?).

In my controller I put:

require ‘RMagick’

clown = Magick::ImageList.new(“clown.jpg”)  
clown = clown.rotate(90)  
clown.write(‘rotate.jpg’)

Using an actual existing image. Then when I try it, I get this:

uninitialized constant ImageList

RAILS\_ROOT: script/…/config/…  
Application Trace | Framework Trace | Full Trace

/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.2.3/lib/active\_support/dependencies.rb:200:in  
`const\_missing’

This error occured while loading the following files:  
image\_list.rb

Any idea what the problem is and how to fix it?

thanks  
csn

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**Author:** ![cool\_screen\_name900](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c68b51/32.png) [@cool\_screen\_name900](https://www.ruby-forum.com/u/cool_screen_name900)\
**Post date:** [November 18, 2005, 8:50pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-imagelist/50040/2 "2005-11-18T20:50:54Z")

</div>

Weird. If I put the same clown code in a file and run it from the  
command line, it works. Could it  
be a problem with some Rails path var, permissions, or something?

csn

— CSN [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> Application Trace | Framework Trace | Full Trace  
> thanks  
> removed\_email\_address@domain.invalid  
> [http://lists.rubyonrails.org/mailman/listinfo/rails](http://lists.rubyonrails.org/mailman/listinfo/rails)

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---

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**Author:** ![cool\_screen\_name900](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c68b51/32.png) [@cool\_screen\_name900](https://www.ruby-forum.com/u/cool_screen_name900)\
**Post date:** [November 18, 2005, 9:42pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-imagelist/50040/3 "2005-11-18T21:42:15Z")

</div>

Jeez, turns out file\_column was interferring. Trying to load its  
libraries or something. I  
uninstalled it and restarted webrick. How aggravating…

csn

— CSN [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> > I’m trying to use RMagick with Rails. I installed RMagick with:  
> > clown = Magick::ImageList.new(“clown.jpg”)
> > 
> > thanks  
> > removed\_email\_address@domain.invalid
> 
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> 
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> removed\_email\_address@domain.invalid  
> [http://lists.rubyonrails.org/mailman/listinfo/rails](http://lists.rubyonrails.org/mailman/listinfo/rails)

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