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我目前有一个非常奇怪的问题。我有一个ExportFile模型。在byebug测试内部的控制台中，如果我调用.all，我会看到：

>>> ExportFile.all
#<ActiveRecord::Relation [#<ExportFile id: 189, sequence_number: 1, filename: "DB_EXPORT_20151106173840.zip", status: 3, content: 2, created_at: "2015-12-09 12:54:56", updated_at: "2015-12-09 12:54:56", first_transfer_date: nil, failed_transfer_count: 0, successful_transfer_date: "2015-12-01 12:54:56">, #<ExportFile id: 190, sequence_number: 2, filename: "DB_EXPORT_20151106173840.zip", status: 3, content: 2, created_at: "2015-12-09 12:54:56", updated_at: "2015-12-09 12:54:56", first_transfer_date: nil, failed_transfer_count: 0, successful_transfer_date: "2015-12-01 12:54:56">, #<ExportFile id: 191, sequence_number: 3, filename: "DB_EXPORT_20151106173840.zip", status: 3, content: 2, created_at: "2015-12-09 12:54:56", updated_at: "2015-12-09 12:54:56", first_transfer_date: nil, failed_transfer_count: 0, successful_transfer_date: "2015-12-01 12:54:56">, #<ExportFile id: 192, sequence_number: 4, filename: "DB_EXPORT_20151106173840.zip", status: 3, content: 2, created_at: "2015-12-09 12:54:56", updated_at: "2015-12-09 12:54:56", first_transfer_date: nil, failed_transfer_count: 0, successful_transfer_date: "2015-12-01 12:54:56">, #<ExportFile id: 193, sequence_number: 5, filename: "DB_EXPORT_20151106173840.zip", status: 3, content: 2, created_at: "2015-12-09 12:54:56", updated_at: "2015-12-09 12:54:56", first_transfer_date: nil, failed_transfer_count: 0, successful_transfer_date: "2015-12-01 12:54:56">]>

但如果我尝试.count, or .all.to_a，我什么也得不到：

>>> ExportFile.count
0
>>> ExportFile.all.to_a
[]

为什么会发生这种情况，我做错了什么？在运行上面的片段之前，我使用FactoryGirl.create_list(:export_file, 5)，如果它确实有所作为。

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2 回答 2

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看来升级byebug解决了这个问题。我已经从 8.1.0 升级到 8.2.1。很奇怪...

于 2015-12-09T14:07:37.147 回答
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我假设您在开发模式下处于控制台中，但 FactoryGirl 在测试数据库中创建记录，因此您无权访问它们。

我认为，如果您在开发数据库中ExportData植入记录，它们就会为您服务。

于 2015-12-09T13:30:37.107 回答