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bb006f98c1
Using tr is faster than gsub when replacing a single character in a string with another single character. Also freeze constant strings
31 lines
924 B
Ruby
31 lines
924 B
Ruby
class Tag < ActiveRecord::Base
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has_many :taggings
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has_many :taggable, :through => :taggings
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DELIMITER = ",".freeze # Controls how to split and join tagnames from strings. You may need to change the <tt>validates_format_of parameters</tt> if you change this.
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JOIN_DELIMITER = ", ".freeze
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# If database speed becomes an issue, you could remove these validations and
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# rescue the ActiveRecord database constraint errors instead.
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validates_presence_of :name
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validates_uniqueness_of :name, :case_sensitive => false
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before_create :before_create
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# Callback to strip extra spaces from the tagname before saving it. If you
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# allow tags to be renamed later, you might want to use the
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# <tt>before_save</tt> callback instead.
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def before_create
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self.name = name.downcase.strip.squeeze(' '.freeze)
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end
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def label
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@label ||= name.tr(' '.freeze, '-'.freeze)
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end
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def to_s
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name
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end
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end
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