How to pass value from js to html.erb render function

Question

I have a partial to which I have to send a parameter -> update_path, which I get from javascript function window.location.href, is there a way I can do it? e.g.
<%= render('abc', :update_path => 'path') %>

Can I set the update_path value of render partial parameters?

The syntax would be `render(:partial =>'abc', :locals => { update_path => 'path' })` — MrYoshiji, Sep 20 '13 at 13:21
@MrYoshiji His syntax actually works fine. See http://api.rubyonrails.org/classes/ActionView/Helpers/RenderingHelper.html#method-i-render - "If no options hash is passed or :update specified, the default is to render a partial and use the second parameter as the locals hash" — Dylan Markow, Sep 20 '13 at 13:26
@MrYoshiji I am in a view where I render this partial. I need to send the location of the current view, through js, as value for the update_path parameter — skadoosh, Sep 20 '13 at 13:37
You can't really do that, JS is executed on the client side (browser) whereas the ruby code is executed on the server-side — MrYoshiji, Sep 20 '13 at 13:40
Thanks, forgot this basic rule.. I guess I can probably create a hidden field in partial, and then update it accordingly. — skadoosh, Sep 20 '13 at 13:46

score 0 · Answer 1 · edited May 23 '17 at 12:05

Is there a reason you need to use JavaScript for this? If not, you can access the current full URL directly through Rails:

render "abc", :update_path => request.original_url

request.original_url would give you something similar to http://mysite.com/my_controller/my_action?my_params=... (i.e. it includes the full url, not just the part after the host/port). If you only need the path portion, you can do request.fullpath which would give you /my_controller/my_action?my_params=....

See How do I get the current absolute URL in Ruby on Rails? for more info.

How to pass value from js to html.erb render function

1 Answers1