英文:
How can i validate if all the objects are created successfully?
问题
我有这段控制器代码，用于在执行过程中创建一个新任务，在执行的中间部分，我需要创建多个新对象，这些对象存储在名为 'subTasks' 的中间表中。
Task_ids.each do |task_id|
created = Subtask.create(task_id: task_id)
end
我想要验证所有的子任务是否成功创建，如果没有成功创建，我需要在应用程序控制器中捕获错误。
是否可以验证这一点？
英文:
i have this piece of controller code, to create an new Task, in the middle of that execution, i need to create several new object at the intermediate table called 'subTasks'
Task_ids.each do |task_id|
created = Subtask.create(task_id: task_id)
end
i want to validate if all the subtask was success created or no, i need catch an error at the application_controller
its possible to validate that?
答案1
得分: 1
尝试这样做，
begin
ActiveRecord::Base.transaction do
Task_ids.each do |task_id|
created = Subtask.create(task_id)
end
end
puts "所有子任务都成功创建，没有出现任何错误。"
rescue ActiveRecord::RecordInvalid => e
puts "发生验证错误：#{e.message}"
rescue => e
puts "发生意外错误：#{e.message}"
end
ActiveRecord::Base.transaction 方法用于将创建子任务的操作包装在一个事务块中。这确保所有子任务的创建被视为一个单一的工作单元。如果在创建过程中出现任何 ActiveRecord::RecordInvalid 错误，事务将自动回滚，并且异常将在第一个 rescue 块中捕获。
您可以在第一个 rescue 块中处理验证错误，例如显示错误消息或记录错误。此外，您可以使用第二个 rescue 块来捕获任何其他意外错误，并相应地处理它们。
通过在 Ruby on Rails 中使用事务，您可以确保子任务创建的原子性，并处理在过程中可能发生的任何错误。
英文:
Try this,
begin
ActiveRecord::Base.transaction do
Task_ids.each do |task_id|
created = Subtask.create(task_id)
end
end
puts "All subtasks were created successfully without any errors."
rescue ActiveRecord::RecordInvalid => e
puts "Validation error occurred: #{e.message}"
rescue => e
puts "An unexpected error occurred: #{e.message}"
end
The ActiveRecord::Base.transaction method is used to wrap the creation of subtasks within a transaction block. This ensures that all subtask creations are treated as a single unit of work. If any ActiveRecord::RecordInvalid error occurs during the creation, the transaction will be automatically rolled back, and the exception will be caught in the first rescue block.
You can handle the validation error, such as displaying an error message or logging the error, within the first rescue block. Additionally, you can use the second rescue block to catch any other unexpected errors and handle them accordingly.
By using transactions in Ruby on Rails, you can ensure the atomicity of your subtask creations and handle any errors that may occur during the process.
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