how do you pass paramters from a button in rails?

rubyonrails-talk
1 
I have the following code in my show.html.erb file, it calls the right method (or path).

I am unsure how to pass variables from my product show.html.etb to my actual method...





<%= button_to 'Add to Cart', add_to_cart_path, method: :post %>



I need to pass the product id, and possibly qty.



Thanks,

Joe
2

button_to generates a form with a button. I’m not sure there’s a way to add custom hidden fields to the form. One way around the problem would be to create the form manually, add the hidden input (with product ID), a number input with quantity and the submit button.

Would this work for you?

3

Hi,

4

One way around the "problem" would be to read the documentation for that method, which includes under "options"

:params - Hash of parameters to be rendered as hidden fields within the form.

FWIW,

5

You can put the parameters as an argument to a path like so:

=link_to “Add Special”, add_special_path(work_day: @date), class: 'uk-button buffer-left-twice’ which will make a url like

http://xxx.com/time/add_special?work_day=2017-02-04

Or if you have a model that is already in the button, you put parameters after it like:

%= link_to ‘Confirm my account’, confirmation_url(@resource, :confirmation_token => @token)

This is from Devise on their default views

6

D’oh! Thanks for correcting me, Hassan. I consulted the docs but somehow completely missed that.