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I'm developing a website where users access the content without registration but it still needs to have a favorites system for the elements on the web. Right now I have implemented a system where i can add items to a "favorites" and the node id for every item is saved on a cookie. Is there a way to filter the items that are shown by a view page using this node ids saved on the cookies?

I thought that it can be done by altering the query sent by the view or by aplying a filter in some point of the process where i check whether the element returned by the view corresponds with the node id saved in the cookie.

Is any of this options feasible? Is there a simpler way to focus this problem?

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  • Check Drupal Setting Views Filter via Cookie for a quick solution. Alternatively (and better) look at Views hooks for a hook to implement where you add/alter the filter by reading the value from the cookie
    – J. Reynolds
    Jan 20, 2016 at 12:15
  • I could achieve it with the 'quick' solution method. It also open the door to solve my other problems without need to apply any hook. Thank you very much.
    – Miquel Correa Casablanca
    Jan 20, 2016 at 14:33

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A better way to tackle your problem might be the Flag module.

It also has a good views integration and is quite easy to set up.

Just add a "favorites" flag and set it as private flag, so every user can have its own favorites.

On your favorites-view set your filter criteria to match the flag and you are good to go.

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  • This could work for implementing a "favorites" system but for what I've seen it works on users or roles. Since the website does not require registration i think it can not solve this problem. Anyway, the system to filter the results of views using data external to Drupal could be very useful for other implementations that i may need.
    – Miquel Correa Casablanca
    Jan 20, 2016 at 9:54
  • It works for anonymous users as well since version 2.x.
    – Linus
    Jan 20, 2016 at 9:57
  • It solves my specific problem for the favorites system but I still need to know how to alter the results of a view using information not stored in drupal itself. In this case I've got the information in the cookies but it can also come from a query to a third party.
    – Miquel Correa Casablanca
    Jan 20, 2016 at 10:23
  • You can use a contextual filter in your view and set the "provide default value" as described here drupal.org/node/1507522 to access your session variable. But I don't know what you mean by information from a third party query...
    – Linus
    Jan 20, 2016 at 10:32
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    You might need to code your own custom views filter or use hook_views_query_alter to modify the query. But this is quite far off from your original question.
    – Linus
    Jan 20, 2016 at 12:08

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