46 lines
1.1 KiB
Ruby
46 lines
1.1 KiB
Ruby
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module Carto
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module Api
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class PresenterCache
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def initialize
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@cache = Hash.new
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end
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# Caches to_poro of the presenter that is passed in a block, based on model class and id. Example:
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# cache.get_poro(user) { Carto::Api::UserPresenter.new(user, { fetch_groups: false } ) }
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def get_poro(model)
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raise "no model given" unless model
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model_class = model.class
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model_id = model.id
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if model_id.nil?
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presenter = yield
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raise "no presenter given" if presenter.nil?
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return presenter.to_poro
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end
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class_cache = get_class_cache(model_class)
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unless class_cache[model_id]
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presenter = yield
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raise "no presenter given" if presenter.nil?
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class_cache[model_id] = presenter.to_poro
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end
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class_cache[model_id]
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end
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private
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def get_class_cache(model_class)
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unless @cache[model_class]
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@cache[model_class] = Hash.new
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end
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@cache[model_class]
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end
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end
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end
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end
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