Misunderstanding init_engine.rb?

Rails Engines
1

(Sorry if this is not the right list – I tried posting to engine-
developers, but got no response.)

It seems to me that the init_engine.rb file must not be getting
processed, or – just as likely – I’m misunderstanding something.

For example, in init_engine.rb, I have:

module PSitsnotEngine
module VERSION
Major = 0 # change implies compatibility breaking with previous
versions
Minor = 1 # change implies backwards-compatible change to API
Release = 0 # incremented with bug-fixes, updates, etc.
end

Configuration – can be overridden in environment.rb

config :max_output_size, 640
config :max_cache_size, 1024
config :cache_file_type, ‘png’
end

Then, I use script/console:

PSitsnotEngine.class
=> Module

PSitsnotEngine::VERSION.class
NameError: uninitialized constant VERSION
from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/
lib/active_support/dependencies.rb:123:in `const_missing’
from (irb):2

PSitsnotEngine.config :max_output_size
=> nil

PSitsnotEngine::CONFIG
=> {}

What am I missing here? The “config” statements work fine if I put
them in environment.rb.

				--Al Evans--
2

Hi Al,

This is indeed the right place to post. First things first - what
versions of Ruby, Rails and the Engines plugin are you using?

The next thing to do when debugging this kind of stuff is stick ‘puts’
lines at the top of files and start script/console or the webrick
server, so you can see what’s being loaded when. FYI, the file
‘init_engine.rb’ will get loaded when you call Engines.start
:<engine_name>.

  • james
3

On May 26, 2006, at 9:46 AM, James A. wrote:

Hi Al,

This is indeed the right place to post. First things first - what
versions of Ruby, Rails and the Engines plugin are you using?

ruby 1.8.4, Rails 1.1.2, Engines 1.1.2

The next thing to do when debugging this kind of stuff is stick ‘puts’
lines at the top of files and start script/console or the webrick
server, so you can see what’s being loaded when. FYI, the file
‘init_engine.rb’ will get loaded when you call Engines.start
:<engine_name>.

(IN init_engine.rb)
puts “init_engine.rb loaded”
puts “PSitsnotEngine::VERSION::Minor is #
{PSitsnotEngine::VERSION::Minor}”
puts “PSitsnotEngine.config :max_output_size is #
{PSitsnotEngine.config :max_output_size}”

alsmini:~/Development/RonRailsDev/psitsnot-engine al$ script/console
Loading development environment.
init_engine.rb loaded
PSitsnotEngine::VERSION::Minor is 1
PSitsnotEngine.config :max_output_size is 640

So it looks good at this point. But then I type:

PSitsnotEngine::VERSION::Minor
NameError: uninitialized constant VERSION
from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/
lib/active_support/dependencies.rb:123:in `const_missing’
from (irb):1

PSitsnotEngine.config :max_output_size
=> nil

As you can see, it all disappeared. If I put the same initialization
into environment.rb, it stays put.

Thanks in advance for any clues you can give me.

				--Al Evans--