If you're on "/cards/:id", then look at your cards_controller.rb , you'd see @card defined , hence you should use <li><%= link_to '<i class="fa fa-money"></i> Card'.html_safe, cart_path(@card) %> </li>
But why would you goto to the show page ( /cards/:id/ ) when you're already on the page ? regarding the cart, You have to follow the same procedure. define @cart in the controller/action and use it like this <li><%= link_to '<i class="fa fa-money"></i> Card'.html_safe, cart_path(@cart) %> </li> If you can give more info on what you're trying to do (app structure) , We can help you a bit better :) PS: i haven't read the book Cheers Vivek On Mon, Dec 8, 2014 at 7:00 PM, Roelof Wobben <[email protected]> wrote: > Hello, > > It's is the form of /cards/:id > > I tried > > <li><%= link_to '<i class="fa fa-money"></i> Card'.html_safe, > cart_path(cart) %> </li> > <li><%= link_to '<i class="fa fa-money"></i> Card'.html_safe, > cart_path(card) %> </li> > > but on both I see this message : > > undefined local variable or method `cart' > > undefined local variable or method `card' > > > Roelof > > Op maandag 8 december 2014 14:23:33 UTC+1 schreef Vivek Sampara: > >> What is the url you're using to show this on a separate page ? >> >> if its in the pattern of "/cards/:id/something" then you dont have to >> provide the card path as rails picks up @card object to build the path or >> you'll have to pass the card variable inside the path method. >> >> eg >> >> <% @cards.each do |card| %> >> <li><%= link_to '<i class="fa fa-money"></i> Card'.html_safe, >> cart_path(card) %> </li> >> <% end %> >> >> This way, rails would know "which" exact card this link should take them >> to. >> >> >> On Mon, Dec 8, 2014 at 6:48 PM, Roelof Wobben <[email protected]> wrote: >> >>> Hello, >>> >>> I follow the Agile Web development book. >>> >>> Now as a extra challenge I try to make the card visible on a seperate >>> page. >>> >>> So I made this link : >>> >>> <li><%= link_to '<i class="fa fa-money"></i> Card'.html_safe, cart_path >>> %> </li> >>> >>> But now I see the above error message. >>> When I do card_path (:id) I see a message that there is no card with the >>> id of id. >>> >>> Roelof >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Ruby on Rails: Talk" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> To view this discussion on the web visit https://groups.google.com/d/ >>> msgid/rubyonrails-talk/9442f58f-58b5-475e-823d- >>> c797431c41c3%40googlegroups.com >>> <https://groups.google.com/d/msgid/rubyonrails-talk/9442f58f-58b5-475e-823d-c797431c41c3%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rubyonrails-talk/46cea06c-0a2c-41e2-88c5-b3516c76c504%40googlegroups.com > <https://groups.google.com/d/msgid/rubyonrails-talk/46cea06c-0a2c-41e2-88c5-b3516c76c504%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/CAFKVRj_SgMF7HEVX%3Duy1zYiFVSR87PuoowS_OhFm6Y_AFiVhpg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
