I know how to do this using a case statement but I want to know if there's a more Rubyesque way of doing things. I'm screen scraping from a lot of different sources. They all have much same data but it's presented in different ways with different access methods. I use scRubyt to do the scraping and define most of the setup for each way of presenting things in hashes which are read in from yaml files. That way I can nearly DRY everything up into a few simple Ruby routines with all the differences between the websites extracted into data files. But there's one area I'm not satisfied with because some cases are so different from the others that I have to write special routines just for them. That's ok and I can name the routines to be used for those cases in the yaml file. Then when the yaml config file is read in I can use a switch statement to tell me how to process the data from each site along the lines of result = case value when name1_from_yaml: result1(param1,param2) when name2_from_yaml: result2(param1,param2) etc end which is fine and dandy but what I really want to do is to be able to put the name of the function to call into the yaml data file and then somehow get to result = function_named_in_yaml_file(param1,param2) How do I do this in Ruby? In other words I want a string or symbol to invoke a procedure without going via a case statement. Ta John S.
on 2008-12-14 16:06
on 2008-12-14 16:53
John S. wrote: > > etc > > Ta > > John S. ri Object#__send__ obj.__send__(method_name, arg1, arg2...)
on 2008-12-15 14:37
Tim OK, thanks for that. I knew it had to be simple >> John S. > > ri Object#__send__ > > obj.__send__(method_name, arg1, arg2...)