ruby-on-rails-5 - 带有 url 查询参数选项的 Rails 5 redirect_back

Question

根据docs :

redirect_back(fallback_location:, allow_other_host: true, **args)

:fallback_location- The default fallback location that will be used on missing Referer header.

:allow_other_host - Allow or disallow redirection to the host that is different to the current host, defaults to true.

All other options that can be passed to redirect_to are accepted as options and the behavior is identical.

和 redirect_to允许我通过将参数作为哈希传递来将参数添加到 url

那么，为什么这些都不适合我:

redirect_back fallback_location: tasks_path, allow_other_host: false, syncing: true

redirect_back fallback_location: tasks_path, allow_other_host: false, { syncing: true }

redirect_back fallback_location: tasks_path, allow_other_host: false, options: { syncing: true }

redirect_back(fallback_location: tasks_path, allow_other_host: false, options: { syncing: true })

redirect_back(fallback_location: tasks_path, allow_other_host: false, syncing: true)

...以及我能想到的上述任何其他迭代。

所有这些(都是有效代码)，只需在不添加参数的情况下返回我

我正在尝试实现此 URL: (back_url or fallback_location) + '?syncing=true'

Answer 1

如果您查看 source code对于 redirect_back你会看到，它本质上使用 redirect_to "whatever_url.com" redirect_to 的版本方法。

如果您查看 the explanation of redirect_to您可以看到，在这个用例中，很遗憾您无法传递任何参数。如果这是非常需要的，我想你可以覆盖 redirect_back使用字符串连接将参数选项附加到 url 的方法，但这似乎是一个讨厌的修复。

但是要回答您的问题-您想要实现的目标似乎是不可能的。