undefined method `paginate' with rails 6

[zaoldreck]

ruby 2.6.6
rails 6.0.2.2

error undefined method `paginate'

Noted:

• include Grape::Kaminari in api
• try with rails loader classic but still error

[dim]

I unfortunately cannot recreate your issue. Did you include a paginate block/line in the endpoint description? I would need to see some code or a small demo app.

[zaoldreck]

class CustomersAPI < Grape::API
  include Grape::Kaminari

  resource :customers do
    desc 'GET /api/v1/customers'
    paginate per_page: 20, max_per_page: 30, offset: 1
    params do
      optional :query, type: String
    end
    get do
      users = User.search_by_email(params[:query])
      render_json(:ok, CustomerSerializer.new(users))
    end
  end
end

[dim]

Closing in favour of #54

[bsodmike]

This is breaking in Ruby ruby 2.5.1p57 with latest version grape-kaminari 0.3.0. I'm seeing the same issue with grape-kaminari v0.2.1 as well.

[bsodmike]

Adding config/initializers/grape-kaminari.rb got it working with gem 'grape-kaminari', '~> 0.2.1':

Grape::API::Instance.include(Grape::Kaminari)

[dim]

@bsodmike CI looks OK - https://travis-ci.org/github/bsm/grape-kaminari. Could you maybe submit a PR with a test to demo the issue?

[smridge]

I'm having this same issue after upgrading to grape-kaminari (0.3.0) for a non rails app but rather a grape app that uses ActiveRecord. The implementation is exactly comparable to @zaoldreck 's example above.

Error Message:

NoMethodError: undefined method `paginate' for #<Class:0x00007fa64c1250f8>

In config.ru

require 'grape'
require 'grape-kaminari'
require 'active_record'
require 'kaminari/activerecord'
require 'raven'
require 'rake'
...

I tried @bsodmike 's suggestion and no dice :/

Thoughts from anyone?

[bsodmike]

I tried @bsodmike 's suggestion and no dice :/

Thoughts from anyone?

@smridge can you try my suggestion with gem 'grape-kaminari', '~> 0.2.1'

[smridge]

@bsodmike , good catch, I clearly missed that part in your initial suggestion 🙃 . After doing this, I don't even need Grape::API::Instance.include(Grape::Kaminari) when updating to 'grape-kaminari', '~> 0.2.1'...I'm guessing this is because it updates grape (1.4.0).

Updating to grape-kaminari (0.3.0) updates grape (1.3.3) due to grape (>= 1.0, != 1.4.0). When adding your suggestion for this version, this error occurs:

NameError: undefined local variable or method `base_instance' for Grape::API::Instance:Class
Did you mean?  base_instance?

which appears to be resolved in ruby-grape/grape#1946 (solved in grape v1.3.1 - I believe base off PR number. I also checked my local gem installation to make sure the method was there.)

So that's half solved in my opinion. Not sure why we can't update to the newest grape version?

[smridge]

So that's half solved in my opinion. Not sure why we can't update to the newest grape version?

Oh I see, because the update was for version 0.3.0 which does not have the base_instance method.

So what's the proposed solution?

[zaoldreck]

Please upgrade grape version and grape-kaminari

gem 'grape', '~> 1.5'
gem 'grape-kaminari', '~> 0.4.0'

@smridge

[smridge]

@zaoldreck works like a charm! Many thanks!