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PORuby/Rails inheritance, overriding validators defined in super-class in sub-class
 

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    <p>I have the following rails/paperclip validator:</p> <pre><code>class ImageRatioValidator &lt; ActiveModel::EachValidator def validate_each(record, attribute, value) attr_name = "#{attribute}_width".to_sym value = record.send(:read_attribute_for_validation, attribute) valid_ratios = options[:ratio] if !value.queued_for_write[:original].blank? geo = Paperclip::Geometry.from_file value.queued_for_write[:original] # first we need to validate the ratio cur_ratio = nil valid_ratios.each do |ratio, max_width| parts = ratio.split ":" next unless (geo.height * parts.first.to_f) == (geo.width * parts.last.to_f) cur_ratio = ratio end # then we need to make sure the maximum width of the ratio is honoured if cur_ratio if not valid_ratios[cur_ratio].to_f &gt;= geo.width record.errors[attribute] &lt;&lt; "The maximum width for ratio #{cur_ratio} is #{valid_ratios[cur_ratio]}. Given width was #{geo.width}!" end else record.errors[attribute] &lt;&lt; "Please make sure you upload a stall logo with a valid ratio (#{valid_ratios.keys.join(", ")})!" end end end end </code></pre> <p>the validator is used in both super (super-class is not abstract so can be instanciated) and sub-class. In the sub-class I need to change the ratios allowed:</p> <p>Super-class:</p> <pre><code>class Superclass validates_attachment :logo, :image_ratio =&gt; { :ratio =&gt; {"1:1" =&gt; "28", "4:1" =&gt; "50", "5:1" =&gt; "40"} } end </code></pre> <p>Sub-class:</p> <pre><code>class Subclass &lt; Superclass validates_attachment :logo, :image_ratio =&gt; { :ratio =&gt; {"1:1" =&gt; "40", "2:1" =&gt; "60"} } end </code></pre> <p>The validator works as expected in the super-class however seems to ignore the new ratios given in the sub-class.<br> Am I trying to use the validators in a non Rails way? How should I be using the validators in a situation like the one described above?</p>
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