impress/app/models/zone.rb

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class Zone < ActiveRecord::Base
translates :label, :plain_label
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# When selecting zones that an asset occupies, we allow the zone to set
# whether or not the zone is "sometimes" occupied. This is false by default.
attr_writer :sometimes
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scope :alphabetical, lambda {
includes_translations.order(Zone::Translation.arel_table[:label])
}
scope :includes_translations, lambda { includes(:translations) }
scope :with_plain_label, lambda { |label|
t = Zone::Translation.arel_table
includes(:translations).where(t[:plain_label].eq(Zone.plainify_label(label)))
}
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def uncertain_label
@sometimes ? "#{label} sometimes" : label
end
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def self.all_plain_labels
Zone.select([:id]).includes(:translations).all.map(&:plain_label).uniq.sort
end
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def self.plainify_label(label)
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label.delete('\- /').parameterize
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end
end