[Resolved] Creating a Ranking System to Rank a Custom Post Type from 1-100

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[chrisB-30]

Hello

I am trying to create a ranking system based on the total of 4 criteria in custom toolset fields.
Each criteria would have a corresponding number between 1-100
Fore instance I would have:

Criteria 1 - 67
Criteria 2 - 42
Criteria 3 - 98
Criteria 4 - 67

Total score - 68.6 (Total divided by 4)

I will have these custom fields on all the entries in a custom post type "Countries"
I would then want to display these Countries in order from highest score to lowest score.

Can you point me in the right direction on how I would go about accomplishing this?

Thanks

[Christian Cox]

Hi, there's no calculation system built into Views or Types so you'll have to create something on your own using custom code. Furthermore, if you want to be able to sort or filter a View using that calculated value, the calculated value must be saved as a custom field. Here are some hints.
- To get the raw numeric value from a number custom field, you can use get_post_meta() - https://developer.wordpress.org/reference/functions/get_post_meta/
- To set the raw numeric value based on some calculation, you can use update_post_meta() - https://codex.wordpress.org/Function_Reference/update_post_meta
- In the database, Types fields use the prefix "wpcf-". So if your field has a slug in wp-admin like "criteria-1", then in the database that field key will be "wpcf-criteria-1".
- To calculate a field value automatically whenever the post is saved, you could use the save_data hook. https://codex.wordpress.org/Plugin_API/Action_Reference/save_post

[chrisB-30]

Humm that looks way too complicated. I guess I will just add the values manually for now.
Thanks