CODEWITHSUNDEEP
ruby-on-railskaminari
nathanQQ
nathanQQ

Reputation: 35

How can I remember a parameter from the previous page so I can go back to it?

I was thinking how to go back from an individual listing page to the index page (with the previous page). It's pretty much like "go back" function. But I don't want to always go to the 1st page.

The indexed page has parameter of page. localhost:3000/listings?page=2

But inside each listing, the URL lacks the page number information. localhost:3000/listings/1

I was using rails 4.1.8 and Kaminari 0.16.3

List controller

  def index
    @listings = Listing.order("created_at DESC").page(params[:page])
  end

Index page:

<%= paginate @listings %>

Show page partial:

<%= link_to 'Back', root_path %>

routes:

root 'listings#index'

How can I do this?

Upvotes: 1

Views: 1192

Answers (1)

messanjah
messanjah

Reputation: 9278

One way to do this is by storing values in the session

def index
  if params[:page]
    session[:listing_index_page] = params[:page]
  end
  @listings = Listing.order("created_at DESC").page(session[:listing_index_page])
end

If the user navigates to listings/index for the first time, there will be no page param and Kaminari should assume page 1. Subsequently navigating to page 2 will store 2 in the session.

If the user returns to the index page later (without an explicit page param) the value will be retrieved from the session.

Upvotes: 1

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