Hi all,
Rail's Activerecord uses Ruby's method_missing to implement dynamic finders such as find_by_#column_name()
which is done by defining in the receiver... def method_missing(method_id, *arguments) if match = /find_(all_by|by)_([_a-zA-Z]\w*)/.match(method_id.to_s) finder, deprecated_finder = determine_finder(match),
determine_deprecated_finder(match) attribute_names = extract_attribute_names_from_match(match) super unless all_attributes_exists?(attribute_names) <snip>
Does Smalltalk have some way of emulating this? I am reading Smalltalk-80 books and don't see anything there. Is the current language support such callback hooks (and others which trap object create events and such?)
I was inspired to study this when I read an old thread (2005) on the seaside list about writing an activerecord like layer for Seaside...although GLORP may be a better option in the long run. This is pretty much an academic excercise for me now.
THanks for your help,
bakki
beginners@lists.squeakfoundation.org