如何增加 Rake 脚本中的值？

发布于 2024-10-12 15:23:30 字数 174 浏览 5 评论 0原文

如何更改此 :project_pages_id => 1 值自动递增？

  user.projects.create!(:title => Faker::Lorem.sentence(1), :project_pages_id => 1)

原文

How can I change this :project_pages_id => 1 value to auto increment?

  user.projects.create!(:title => Faker::Lorem.sentence(1), :project_pages_id => 1)

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菊凝晚露 2024-10-19 15:23:30

10.times do |n|
  user.projects.create!(:title => Faker::Lorem.sentence(1), :project_pages_id => n
end

10.times do |n|
  user.projects.create!(:title => Faker::Lorem.sentence(1), :project_pages_id => n
end

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余罪 2024-10-19 15:23:30

您需要迭代一个数组，例如：

a = (1..10).to_a #or however many ID's you want.
a.each do {|d|   user.projects.create!(:title => Faker::Lorem.sentence(1), :project_pages_id => d)}

我确信还有其他方法，但这又快又脏，而且只是一个测试。

You'd need to iterate over an array like:

a = (1..10).to_a #or however many ID's you want.
a.each do {|d|   user.projects.create!(:title => Faker::Lorem.sentence(1), :project_pages_id => d)}

I'm sure there is other ways, but this is quick and dirty, and it's only a test.

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怎会甘心 2024-10-19 15:23:30

该project_pages_id是否打算作为外键？如果是这样，为什么要自动递增它以使其具有零关联？

您似乎正在尝试创建种子数据。一个好方法是使用 Factory Girl：

https://github.com/thoughtbot/factory_girl

除其他外，它具有“序列”的概念，它解决了您原来的问题：

# Defines a new sequence
Factory.sequence :email do |n|
  "person#{n}@example.com"
end

Factory.next :email
# => "[email protected]"

Factory.next :email
# => "[email protected]"

Is that project_pages_id intended to be a foreign key? If so, why would you auto-increment it such that it will have a nil association?

It looks like you're trying to create seed data. A good way to do that is to use Factory Girl:

https://github.com/thoughtbot/factory_girl

Among other things, it has the concept of "sequences", which solves your original question:

# Defines a new sequence
Factory.sequence :email do |n|
  "person#{n}@example.com"
end

Factory.next :email
# => "[email protected]"

Factory.next :email
# => "[email protected]"

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