如何绕过default_url_options? [英] How to bypass default_url_options?
问题描述
在我的上一个Rails项目中,我必须覆盖application_controller.rb
中的default_url_options
,以始终通过每个请求传递参数,如下所示:
In my last Rails project I had to overwrite default_url_options
in application_controller.rb
to always pass a param through every request, like this:
def default_url_options
{ :my_default_param => my_param_value }
end
现在,每个url帮助器都会在每个生成的url的末尾附加一个my_default_param.
例如,user_url(@current_user)
生成如下网址:
Now every url helper attaches a my_default_param at the end of every generated url.
For instance user_url(@current_user)
generates a url like:
http://www.example.com/users/1?&my_default_param=my_param_value
但是有时我需要生成不带my_default_param的URL .有什么我可以传递给url帮助器的选项,以便user_url(@current_user, some_option: some_option_value
)仅返回:
But sometimes I need to generate the url without my_default_param. Is there some option I can pass to the url helper so that user_url(@current_user, some_option: some_option_value
) will return only:
http://www.example.com/users/1?&my_default_param=my_param_value
?
PN:我已经尝试使用:overwrite_params=> { }
,但是它不起作用,可能是因为它是在default_url_options之前进行评估的.
PN: I already tried with :overwrite_params=> { }
but it doesn't work, probably because it's evaluated before default_url_options.
如果没有,是否还有另一种方法来获取未附加my_default_param的@current_user URL?
谢谢.
推荐答案
default_url_options
具有一个参数 options
,您可以根据需要使用它:
default_url_options
has one param options
which you could use as you wish:
def default_url_options( options = {} )
use_defaults = options.delete( :use_defaults )
if use_defaults
{ :my_default_param => 'my_param_value' }
else
{}
end
end
或者您可以颠倒逻辑:
def default_url_options( options = {} )
ignore_defaults = options.delete( :ignore_defaults )
if ignore_defaults
{}
else
{ :my_default_param => 'my_param_value' }
end
end
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