ccd7a94d40
This relaxes the previous requirement that cancan has to be loaded before any models are. append_extensions will apply to all previously loaded models as well as ones loaded after.
35 lines
1.2 KiB
Ruby
35 lines
1.2 KiB
Ruby
module CanCan
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module ModelAdapters
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class DataMapperAdapter < AbstractAdapter
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def self.for_class?(model_class)
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model_class <= DataMapper::Resource
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end
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def self.find(model_class, id)
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model_class.get(id)
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end
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def self.override_conditions_hash_matching?(subject, conditions)
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conditions.any? { |k,v| !k.kind_of?(Symbol) }
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end
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def self.matches_conditions_hash?(subject, conditions)
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collection = DataMapper::Collection.new(subject.query, [ subject ])
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!!collection.first(conditions)
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end
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def database_records
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scope = @model_class.all(:conditions => ["0 = 1"])
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cans, cannots = @rules.partition { |r| r.base_behavior }
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return scope if cans.empty?
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# apply unions first, then differences. this mean cannot overrides can
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cans.each { |r| scope += @model_class.all(:conditions => r.conditions) }
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cannots.each { |r| scope -= @model_class.all(:conditions => r.conditions) }
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scope
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end
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end # class DataMapper
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end # module ModelAdapters
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end # module CanCan
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DataMapper::Model.append_extensions(CanCan::ModelAdditions::ClassMethods)
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