Mode code looks something like this. Surely there is a better way to be
doing this, no?
# model
many_to_many :resources, join_table: :items
one_to_many :items
...
# association model
dataset_module do
def lock_version
select_map(Sequel.qualify(model.table_name, :lock_version))
end
end
# controller
def dataset
model.eager(:items, resources: { original: :proxies })
end
# view
def etag
[
collection,
collection.items_dataset,
collection.resources_dataset,
collection.originals_dataset,
collection.proxies_dataset
].map(&:lock_version).join
end
Best,
Jamie
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