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module PublicBodyDerivedFields
extend ActiveSupport::Concern
included do
before_save :set_first_letter
# When name or short name is changed, also change the url name
def short_name=(short_name)
super
update_url_name
end
def name=(name)
super
update_url_name
end
end
# Return the short name if present, or else long name
def short_or_long_name
if self.short_name.nil? || self.short_name.empty?
self.name.nil? ? "" : self.name
else
self.short_name
end
end
# Set the first letter, which is used for faster queries
def set_first_letter
unless name.blank?
# we use a regex to ensure it works with utf-8/multi-byte
first_letter = Unicode.upcase name.scan(/^./mu)[0]
if first_letter != self.first_letter
self.first_letter = first_letter
end
end
end
def update_url_name
if changed.include?('name') || changed.include?('short_name')
self.url_name = MySociety::Format.simplify_url_part(self.short_or_long_name, 'body')
end
end
end
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