Ferret talk - Sep 2006 - Using the wildcard plus partial searched

I''ve seen no definitive answer to this question.

I''ve noticed that typing "t" in the search box will return no
results
however if I type "t*" it brings up all results beginning with t.

I would like this behaviour on by default without having to type the 
wildcard. Is there a way to do this?

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On Mon, Sep 18, 2006 at 06:06:00PM +0200, Richard wrote:
> I''ve seen no definitive answer to this question.
> 
> I''ve noticed that typing "t" in the search box will
return no results
> however if I type "t*" it brings up all results beginning with t.
> 
> I would like this behaviour on by default without having to type the 
> wildcard. Is there a way to do this?
Manually append a wild card to the query terms before giving it to the 
parser. I once did something like this for a customer. The problem is 
that this can get complex with more complex queries, i.e. you won''t
want
to append a ''*'' to the word AND, since that''s part of
the query language.

Would be better to have a special query parser for this, or even an
option in the stock QueryParser to force it to use wild card queries all
the time.


Jens



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> I''ve noticed that typing "t" in the search box will
return no results
> however if I type "t*" it brings up all results beginning with t.
> 
> I would like this behaviour on by default without having to type the 
> wildcard. Is there a way to do this?
Add the following search method to your model

  def self.search(query)
    criteria = query.split
    wild_criteria = []
    criteria.each do |criterion|
      if criterion == "AND" || criterion == "OR"
        wild_criteria.push(criterion)
      else
        wild_criterion = "*"+criterion+"*"
        wild_criteria.push(wild_criterion)
      end
    end
    wild_criteria.pop if wild_criteria.last == "AND" || 
wild_criteria.last == "OR"
    wild_query = wild_criteria.join(" ")
    self.find_by_contents(wild_query)
  end

This also removes trailing logical operators, which will prevent it from 
screwing up a live search.

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