earlier i asked if its possible to load a string as code. but now, lets
say i have a config file. a text file with ruby code in it. how can i
load that into my ruby code? but for that matter, everytime it does load
it, can it read as a new object? like lets say the config file consists
of "plugins" and i add one, can ruby pick it up while the app is
running?
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Pavel Pvl wrote:
earlier i asked if its possible to load a string as code. but now, lets
say i have a config file. a text file with ruby code in it. how can i
load that into my ruby code? but for that matter, everytime it does load
it, can it read as a new object? like lets say the config file consists
of "plugins" and i add one, can ruby pick it up while the app is
running?
You can do that by wrapping the loaded code in a module, and then using that module to access any constants or functions defined in the code. Here's how I do that:
http://redshift.sourceforge.net/script/
An adaptation of this is in the facets gem, IIRC. The basic idea is simple (suggested by Nobu Nokada):
def load_in_module(file)
module_eval(IO.read(file), File.expand_path(file))
end
This returns a module that you can use to get at stuff in the file:
m = load_in_module(file)
m::SomeClass
m.some_method
The code above assumes that the file has these definitions:
class SomeClass;...end
def self.some_method;...end
An alternative:
http://codeforpeople.com/lib/ruby/dynaload/
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vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407