Fantastic! Thanks for the quick reply and of course for sequel.
/Simon On Fri, May 26, 2017 at 6:16 PM, Jeremy Evans <[email protected]> wrote: > On Friday, May 26, 2017 at 5:31:39 AM UTC-7, Simon Dahlbacka wrote: >> >> a dataset has a .columns property that is an array of symbols, but is it >> possible to somehow get back the actual column name? >> basically, if the dataset is >> >> ds = DB[:foo].select(Sequel.alias(:bar, :something_entirely_different)) >> >> then ds.columns would be [:something_entirely_different] >> >> is it possible to get back :bar somehow, i.e. the actual column name >> before it was aliased? >> >> I would want to manipulate the dataset before executing the query, by >> adding an additional where clause based on bar column >> > > You can introspect the content using Dataset#opts: > > select = ds.opts[:select] # [Sequel::SQL::AliasedExpression instance] > > And from there use the Sequel API: > > select[0].expression # => :bar > > There are internal helper methods that do this: > > ds.send(:unaliased_identifier, select[0]) # => :bar > > Thanks, > Jeremy > > -- > You received this message because you are subscribed to the Google Groups > "sequel-talk" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sequel-talk. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sequel-talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sequel-talk. For more options, visit https://groups.google.com/d/optout.
