Ruby Fuzzily relation "trigrams" does not exist -

i'm trying use ruby gem fuzzily in rails application, getting error

relation "trigrams" not exist 

i followed instructions https://github.com/mezis/fuzzily

here's code

trigram.rb

class trigram < activerecord::base   include url::model   include fuzzily::model end 

url.rb

class url < activerecord::base     fuzzily_searchable :short_url end 

add_trigram_mode.rb

class addtrigramsmodel < activerecord::migration   extend url::migration   extend fuzzily::migration    trigrams_owner_id_column_type = :uuid  end 

i did rake db:migrate. when execute in rails console, get:

    url.find_by_fuzzy_short_url('sojdgl')   url load (1.4ms)  select  "urls".* "urls"  order "urls"."id" asc limit 100 pg::undefinedtable: error:  relation "trigrams" not exist line 5:                a.attrelid = '"trigrams"'::regclass                                           ^ :               select a.attname, format_type(a.atttypid, a.atttypmod),                      pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod                 pg_attribute left join pg_attrdef d                   on a.attrelid = d.adrelid , a.attnum = d.adnum                a.attrelid = '"trigrams"'::regclass                  , a.attnum > 0 , not a.attisdropped                order a.attnum  activerecord::statementinvalid: pg::undefinedtable: error:  relation "trigrams" not exist line 5:                a.attrelid = '"trigrams"'::regclass 

i named migration file incorrectly. works when changed 20150830110623_add_trigrams_model.rb