11 lines
		
	
	
		
			438 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			11 lines
		
	
	
		
			438 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| class NameValidator < ActiveModel::EachValidator
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|   MAX_NAME_LEN = 200
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|   NAME_REGEX = /\A[\w\-]{1,#{MAX_NAME_LEN}}\z/
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| 
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|   def validate_each(record, attribute, value)
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|     unless NAME_REGEX.match(value)
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|       record.errors.add attribute, (options[:message] || "Invalid #{attribute} value '#{value}': it should contains symbols 'a-zA-Z0-9_-' and length should be more then 1 and less or equals then #{MAX_NAME_LEN} symbols")
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|     end
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|   end
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| end
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