Add sort_direction="random" to the [gravityview] shortcode

[rafaehlers]

According to our doc, that's not yet possible: https://docs.gravitykit.com/article/73-using-the-shortcode

Needs double-checking.

[rafaehlers]

https://secure.helpscout.net/conversation/2762663169/58947

[rafaehlers]

@Mwalek can you please check this one whenever possible? Be aware of: #1554

[Mwalek]

@rafaehlers It seems possible to sort the result randomly, but the order does not change when the page is refreshed. Btw, I could only sort randomly when using random rand || RAND in the shortcode. E.g:

[gravityview id="312" secret="16e2b02dd26b" sort_direction="rand"]

And I could only reproduce #1554 when a sort_field was included. E.g:

[gravityview id="312" secret="16e2b02dd26b" sort_direction="rand" sort_field="3"]

[rafaehlers]

@rafaehlers It seems possible to sort the result randomly, but the order does not change when the page is refreshed. Btw, I could only sort randomly when using random rand || RAND in the shortcode. E.g:

@Mwalek I'm sorry, this is not clear. So, sort=rand works or not? Do the results (entries) change on each refresh or not on the View?

[Mwalek]

@rafaehlers the order does not change when the page is refreshed.

[Mwalek]

When sort_direction="rand" is used, the result is different from the default, but if you refresh the View you will continually see the same "random" output.