Question

我有以下工厂所在地：

FactoryBot.define do
  factory :location do
    valid_points = [
      # a bunch of points in format ["lng", "lat"]
    ]
    point = valid_points.sample
    geography = RGeo::Geographic.spherical_factory(srid: 4326).point(point[0], point[1])

    street_1 { Faker::Address.street_address }
    street_2 { Faker::Address.secondary_address }
    city { Faker::Address.city }
    state { Faker::Address.state }
    country { Faker::Address.country }
    lonlat { geography }
    longitude { point[0] }
    latitude { point[1] }
  end
end

不幸的是，这会使位置与采样点相同。每次创建位置时如何获得随机点？

谢谢

Answer 1

您可以使用FactoryBot callbacks

FactoryBot.define do
  factory :location do    
    street_1 { Faker::Address.street_address }
    street_2 { Faker::Address.secondary_address }
    city { Faker::Address.city }
    state { Faker::Address.state }
    country { Faker::Address.country }

    after(:build) do |location| 
      valid_points = [
        # a bunch of points in format ["lng", "lat"]
      ]
      point = valid_points.sample
      geography = RGeo::Geographic.spherical_factory(srid: 4326).point(point[0], point[1])

      location.lonlat = geography
      location.latitude = point[1]
      location.longitude = point[0]
    end
  end
end

为什么FactoryBot每次都始终为lat / lng分配相同的值？

1 个答案: