`block in set_restricted': method column0= doesn't exist (Sequel::Error)

Question

I have this code:

require 'bundler/setup'
require 'sequel'
require 'sequel-rails'
require_relative 'support/benchmark_rails'
DB = Sequel.connect('sqlite::memory:')
COUNT=25 
Sequel.extension :migration
Sequel.migration do
  change do
    create_table(:users) do
      primary_key :id
      COUNT.times do |i|
       column :"column#{i}", "varchar(255)"
     end
    end
  end
end

class User < Sequel::Model; end

attributes = {}

COUNT.times do |i|
  attributes[:"column#{i}"] = "Some string #{i}"
end

Benchmark.rails("sequel/#{db_adapter}_create_string_columns", time: 5) do
  User.create(attributes)
end

But when I try to run this, it gives the following error:

/home/aaditya/Downloads/ruby-bench-suite/rails/vendor/bundle/ruby/2.3.0/gems/sequel-3.40.0/lib/sequel/model/base.rb:1759:in `block in set_restricted': method name= doesn't exist (Sequel::Error)
    from /home/aaditya/Downloads/ruby-bench-suite/rails/vendor/bundle/ruby/2.3.0/gems/sequel-3.40.0/lib/sequel/model/base.rb:1746:in `each'
    from /home/aaditya/Downloads/ruby-bench-suite/rails/vendor/bundle/ruby/2.3.0/gems/sequel-3.40.0/lib/sequel/model/base.rb:1746:in `set_restricted'
    from /home/aaditya/Downloads/ruby-bench-suite/rails/vendor/bundle/ruby/2.3.0/gems/sequel-3.40.0/lib/sequel/model/base.rb:1257:in `set'
    from /home/aaditya/Downloads/ruby-bench-suite/rails/vendor/bundle/ruby/2.3.0/gems/sequel-3.40.0/lib/sequel/model/base.rb:1715:in `initialize_set'
    from /home/aaditya/Downloads/ruby-bench-suite/rails/vendor/bundle/ruby/2.3.0/gems/sequel-3.40.0/lib/sequel/model/base.rb:899:in `initialize'
    from benchmarks/bm_sequel_create_string_columns.rb:34:in `new'
    from benchmarks/bm_sequel_create_string_columns.rb:34:in `<main>'

I tried to simplify this and tried to run only User.create(:name=>'Bob') but with no successful results. What mistake am I making?

There are no problems with the other methods as the same code is running for Active Record.

Answer 1

You are just defining the migration, you aren't actually running the CREATE TABLE on the database. Remove the migration code and just call DB.create_table.