55 lines
1.6 KiB
Ruby
55 lines
1.6 KiB
Ruby
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# Copyright (C) 2012-2016 Zammad Foundation, http://zammad-foundation.org/
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module ApplicationModel::ChecksAttributeValuesAndLength
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extend ActiveSupport::Concern
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included do
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before_create :check_attribute_values_and_length
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before_update :check_attribute_values_and_length
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end
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=begin
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1) check string/varchar size and cut them if needed
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2) check string for null byte \u0000 and remove it
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=end
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def check_attribute_values_and_length
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columns = self.class.columns_hash
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attributes.each { |name, value|
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next if value.blank?
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next if !value.instance_of?(String)
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column = columns[name]
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next if !column
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# strip null byte chars (postgresql will complain about it)
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if column.sql_type == 'text'
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if Rails.application.config.db_null_byte == false
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self[name].delete!("\u0000")
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end
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end
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# for varchar check length and replace null bytes
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limit = column.limit
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if limit
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current_length = value.length
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if limit < current_length
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logger.warn "WARNING: cut string because of database length #{self.class}.#{name}(#{limit} but is #{current_length}:#{value})"
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self[name] = value[0, limit]
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end
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# strip null byte chars (postgresql will complain about it)
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if Rails.application.config.db_null_byte == false
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self[name].delete!("\u0000")
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end
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end
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# strip 4 bytes utf8 chars if needed (mysql/mariadb will complain it)
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next if self[name].blank?
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self[name] = self[name].utf8_to_3bytesutf8
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}
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true
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end
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end
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