How to escape ? in queries


#1

Hi,

I have a simple table with id and name fields and which has some
data which includes ? and ‘’ characters. If I try to find the rows
which have these elements, the query fails with the following error:

irb(main):013:0* a = Person.find(:all, :conditions => [“name = ???”])
ActiveRecord::PreparedStatementInvalid: wrong number of bind variables
(0 for 3) in: name = ???
from /activerecord-1.15.2/lib/active_record/base.rb:1463:in
raise_if_bind_arity_mismatch' from /activerecord-1.15.2/lib/active_record/base.rb:1426:inreplace_bind_variables’
from /activerecord-1.15.2/lib/active_record/base.rb:1417:in
sanitize_sql_array' from /activerecord-1.15.2/lib/active_record/base.rb:1388:insanitize_sql’
from /activerecord-1.15.2/lib/active_record/base.rb:1164:in
add_conditions!' from /activerecord-1.15.2/lib/active_record/base.rb:1097:inconstruct_finder_sql’
from /activerecord-1.15.2/lib/active_record/base.rb:997:in
find_every' from /activerecord-1.15.2/lib/active_record/base.rb:418:infind’
from (irb):13
from /usr/lib/site_ruby/1.8/rubygems.rb:78

So my question is: is there any way to escape the query ? Or better
still, can I do the query without SQL (pure ruby) ?

Thanks!


#2

Or better still, can I do the query without SQL (pure ruby) ?

There sure is. Try this:

a = Person.find_by_name("???")

Andy