-1
I don't think this feature would be useful to the majority of Rails developers
out there, sorry.
You could always release it as a separate gem and get people to use it that
way.
--
Ryan Bigg
On Friday, 10 August 2012 at 0:59, Stephen Touset wrote:
> In several places in Rails (e.g., ActiveRecord `find_by_#{attr2}_and_#{att2}`
> methods), you override `method_missing` to provide functionality. In all of
> those places, you follow the sane approach of handling `respond_to?` as well
> as actually defining the method body for future callers.
>
> I've abstracted this logic out into a project called def_method_missing[1].
> Examples:
>
> class Foo
> # regexp matchers yield the MatchData to the block, so you can modify the
> method
> # body based on the regexp
> def_method_missing /bar/ do |match|
> -> { match.pre_match }
> end
>
> # without a regexp matcher, the name of the method is passed to the block,
> allowing
> # you to decide whether or not to implement the method
> def_method_missing do |name|
> -> { name } if name.length == 4
> -> { "bang!" } if name[-1] == '!'
> end
> end
>
> foo = Foo.new
>
> # regexp-based method_missing
> foo.respond_to?(:bazbar) # => true
> foo.bazbar # => "baz"
> foo.methods.include? /bazbaz/ # => true
>
> # arbitrary Ruby method_missing
> foo.respond_to?(:wat) # => false
> foo.respond_to?(:what) # => true
> foo.what # => :what
> foo.methods.include?(:what) # => true
>
> foo.bang # => :bang # matches four-character method name
> foo.bang! # => "bang!" # matches last-character bang
> foo.wat! # => :wat! # matches four-character method name first
>
> Is this something you'd be willing to consider including in ActiveSupport?
> Obviously, I'll have to put the logic into its own Module to avoid polluting
> default `Object`s and `Module`s. Plus documentation/tests. The current
> implementation was just a concept I threw together a few months back and
> promptly forgot about.
>
> [1]: https://github.com/stouset/def_method_missing
>
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