def with_scope(method_scoping = {}, action = :merge, &block)
method_scoping = method_scoping.method_scoping if method_scoping.respond_to?(:method_scoping)
method_scoping = method_scoping.inject({}) do |hash, (method, params)|
hash[method] = (params == true) ? params : params.dup
hash
end
method_scoping.assert_valid_keys([ :find, :create ])
if f = method_scoping[:find]
f.assert_valid_keys(VALID_FIND_OPTIONS)
set_readonly_option! f
end
if [:merge, :reverse_merge].include?(action) && current_scoped_methods
method_scoping = current_scoped_methods.inject(method_scoping) do |hash, (method, params)|
case hash[method]
when Hash
if method == :find
(hash[method].keys + params.keys).uniq.each do |key|
merge = hash[method][key] && params[key]
if key == :conditions && merge
if params[key].is_a?(Hash) && hash[method][key].is_a?(Hash)
hash[method][key] = merge_conditions(hash[method][key].deep_merge(params[key]))
else
hash[method][key] = merge_conditions(params[key], hash[method][key])
end
elsif key == :include && merge
hash[method][key] = merge_includes(hash[method][key], params[key]).uniq
elsif key == :joins && merge
hash[method][key] = merge_joins(params[key], hash[method][key])
else
hash[method][key] = hash[method][key] || params[key]
end
end
else
if action == :reverse_merge
hash[method] = hash[method].merge(params)
else
hash[method] = params.merge(hash[method])
end
end
else
hash[method] = params
end
hash
end
end
self.scoped_methods << method_scoping
begin
yield
ensure
self.scoped_methods.pop
end
end