Codegeneration in Model slow

rubyonrails-talk
1

hello list,

i've got the following code snippet in my model to generate extra helper functions.

    def transform_to_boolean       Property.columns.select {|c| c.sql_type == "varchar(1)"}.each do

col>

        define_method "#{col.name.to_s}".to_sym do           v = self.attributes[col.name.to_s]           v = (v ? v.upcase : "F")           if (v == "W" || v == "T")             true           else             false           end         end       end     end

this functionality takes over 1,2 sec for one instance of the model. It has to iterate over 260 columns.

Do you have an idea how to speed up this piece of functionality?

best regards,

matthias

2

this is the call of evil v = self.attributes[col.name.to_s] i change it to v = self.read_attribute(col.name.to_sym)

its much faster.

3

why do you need to call this on each instance ?

Fred