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module InheritedResources
# Shallow provides a functionality that goes on pair with Rails' shallow.
# It is very similar to "optional" but it actually finds all the parents
# resources instead of leaving them blank. Consider the following example:
#
# belongs_to :post, :shallow => true do
# belongs_to :comment
# end
#
# When accessed as /comments/1, Inherited Resources will automatically get
# the post resource so both objects are actually accessible through the views.
#
# However, when using optional, Inherited Resources wouldn't actually bother
# with finding the parent object.
module ShallowHelpers
private
def symbols_for_association_chain #:nodoc:
parent_symbols = parents_symbols.dup
instance = nil
if id = params[:id]
finder_method = resources_configuration[:self][:finder] || :find
instance = self.resource_class.send(finder_method, id)
elsif parents_symbols.size > 1
config = resources_configuration[parent_symbols.pop]
finder_method = config[:finder] || :find
instance = config[:parent_class].send(finder_method, params[config[:param]])
end
load_parents(instance, parent_symbols) if instance
parents_symbols
end
def load_parents(instance, parent_symbols)
parent_symbols.reverse.each do |parent|
instance = instance.send(parent)
config = resources_configuration[parent]
params[config[:param]] = instance.to_param
end
end
end
end
Version data entries
21 entries across 21 versions & 2 rubygems