How to do vaildation with sequel and ramaze ?07.12.13

in your model you can add like this:
  validations.clear                                                                                                                                                                     
  validates do                                                                                                                                                                          
    presence_of       :category_id,:name,:po_price,:list_price,:local_price,:weight,:qty                                                                                                
    uniqueness_of     :name                                                                                                                                                             
    numericality_of  :po_price,:list_price,:local_price,:weight,:qty                                                                                                                    
  end

than in your controller

def error                                                                                                                                                                             
    @error = Ramaze::Dispatcher::Error.current                                                                                                                                          
    %(                                                                                                                                                                                  
      <h1 id="error">Error:<span> #{ @error.message}</span></h1>                                                                                                                        
      <div id="backtrace">                                                                                                                                                              
        #{ @error.backtrace.join('<br/>')}                                                                                                                                              
      </div>                                                                                                                                                                            
    )                                                                                                                                                                                   
  end

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