Ruby on Rails 中的“返回”浏览器操作
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'Back' browser action in Ruby on Rails
提问by alamodey
Can the 'Back' browser functionality be invoked from a Rails 'Back' link?
可以从 Rails 的“返回”链接调用“返回”浏览器功能吗？
采纳答案by Sophie Alpert
In Rails 3 and earlier:
在 Rails 3 及更早版本中：
link_to_function "Back", "history.back()"
In Rails 4, this method has been removed. See Andreas's comment.
在 Rails 4 中，此方法已被删除。见安德烈亚斯的评论。
回答by Tilendor
回答by HarlemSquirrel
This is working in Rails 5.1 along with Turbolinks.
这在 Rails 5.1 中与 Turbolinks 一起工作。
link_to 'Back', 'javascript:history.back()'
回答by Jay Killeen
In Rails 4.2, I got it to work with this:
在 Rails 4.2 中，我让它与这个一起工作：
<a href="javascript:history.back()">Refine Search</a>
I stole this off of @cpm's answer, except that link_to("Refine Search", :back)didn't do the job I wanted while pasting in the generated code <a href="javascript:history.back()">Refine Search</a>did it perfectly.
我从@cpm 的回答中窃取了这个，只是link_to("Refine Search", :back)在粘贴生成的代码时<a href="javascript:history.back()">Refine Search</a>没有完成我想要的工作。
回答by cpm
You can use link_to("Hello", :back)to generate <a href="javascript:history.back()">Hello</a>.
您可以使用link_to("Hello", :back)生成<a href="javascript:history.back()">Hello</a>.
回答by Pradeep Agrawal
This will work similarly as browser back button try this
这将与浏览器后退按钮类似，试试这个
<%= link_to 'Back', 'javascript:history.go(-1);' %>
<%= link_to 'Back', 'javascript:history.go(-1);' %>
回答by Philippe Addor
Pay attention to this commentfrom the user rthbound! As he notes, link_towith the symbol :backdoes not always generate a “real” back event as if the user clicked on their browser's Back button. It can also be a resubmit of the action that loaded the current view.
请注意来自用户rthbound 的这条评论！正如他所指出的，使用符号并不总是像用户单击浏览器的后退按钮一样生成“真正的”后退事件。它也可以是加载当前视图的操作的重新提交。link_to:back
The documentation for Rails 4.2.6says this about link_toand the :backsymbol:
Rails 4.2.6的文档说明了这一点link_to和:back符号：
Using a
:backSymbol instead of an options hash will generate a link to the referrer (a JavaScript back link will be used in place of a referrer if none exists).
使用
:backSymbol 而不是 options 哈希将生成指向引用的链接（如果引用不存在，将使用 JavaScript 反向链接代替引用）。
回答by Dan Andreasson
If you like me do not want the behaviour of link_to "cancel", :backyou could implement a helper method which either links to the records index path or show path. (i.e teams_pathor team_path(@team)
如果你喜欢我不想要link_to "cancel", :back你的行为，你可以实现一个帮助方法，它要么链接到记录索引路径，要么显示路径。（即teams_path或team_path(@team)
module CancelFormButtonHelper
def cancel_button(record)
index_path = record.class.to_s.pluralize.downcase + "_path"
path = record.persisted? ? record : eval(index_path)
link_to "Cancel", path
end
end
which can then be used as <%= cancel_button @team %>within a form for example.
例如，它可以<%= cancel_button @team %>在表单中使用。
回答by Evan Ross
You can use js function window.history.back()
你可以使用js函数window.history.back()
= link_to 'Back', onclick: "window.history.back();"
回答by Mark A
Using
使用
link_to_function "Back", "history.back()"
seems to be exactly like hitting the back button in the browser. All inputted form data is still there when you get back.
似乎就像点击浏览器中的后退按钮一样。当您回来时，所有输入的表单数据仍然存在。
