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fab-manager/app/models/category.rb

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# frozen_string_literal: true
# Category is a first-level filter, used to categorize Events.
# It is mandatory to choose a Category when creating an event.
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class Category < ApplicationRecord
extend FriendlyId
friendly_id :name, use: :slugged
has_many :events, dependent: :destroy
after_create :create_statistic_subtype
after_update :update_statistic_subtype, if: :saved_change_to_name?
after_destroy :remove_statistic_subtype
def create_statistic_subtype
index = StatisticIndex.find_by(es_type_key: 'event')
StatisticSubType.create!(statistic_types: index.statistic_types, key: slug, label: name)
end
def update_statistic_subtype
index = StatisticIndex.find_by(es_type_key: 'event')
subtype = StatisticSubType.joins(statistic_type_sub_types: :statistic_type)
.find_by(key: previous_changes[:name][0], statistic_types: { statistic_index_id: index.id })
subtype.label = name
subtype.save!
end
def remove_statistic_subtype
subtype = StatisticSubType.where(key: slug).first
subtype.destroy!
end
def safe_destroy
if Category.count > 1 && events.count.zero?
destroy
else
false
end
end
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end