How to read a file and execute its code which relates to the current class

Ruby
1

I have a problem.I want to read codes from a file.And the codes in the
file use some methods which I defined in the main process. So I don’t
know how to deal with it. Please help me.
Thank you!

Here is an example:
class Job
def job_handle
…
end
def job_load
File.open(“the file”)
end
def job_exception
end
end
In file “the file”,the codes contain the job_exception and job_load
methods.

2

On 04/13/2012 07:44 AM, dongcan z. wrote:

.......
end
def job_load
File.open("the file")
end
def job_exception
end

end
In file “the file”,the codes contain the job_exception and job_load
methods.

if “the file” contains ruby code, you could use “load” or “require”.
Search for “Including Other Files” in
http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_modules.html

ralf

3

Hi,

I’m not quite sure what you mean. Do you want to use the code in the
file to define the methods (like you copied and pasted it into this
exact position)?

If so, you can use the “instance_eval” method:

def job_load
instance_eval File.read ‘code.txt’
end

However, this isn’t a very good idea.

4

On 04/13/2012 07:44 AM, dongcan z. wrote:

.......
end
def job_load
File.open("the file")
end
def job_exception
end

end
In file “the file”,the codes contain the job_exception and job_load
methods.

If you want to overload the Job.job_load with an another definition
from “the file” you could use ruby’s
mixin functionality. Right at the beginning of
http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_modules.html
you’ll find what you need