[feature request] Validation rule definition for WPPost models

[jdoubleu]

It would be nice, if I could easily add validation rules to my custom post type's model, like in http fields.

I imagine something like a $rules array, next to the $fillable array, in a WPPost derived class.

So, when I create a new custom post type and add a form to it in the backend (e.g. with setTitleForm), I would like to validate the fields (e.g. require some of them).

My current workaround is to create a controller, overwrite its update function and manually trigger the validator in there. However, this doesn't properly work, the user won't get any feedback, because of #235.

[kevindees]

Hey @jdoubleu

Have you tried this? https://typerocket.com/add-custom-field-validation-to-wordpress-post-types/

[jdoubleu]

Thanks, this makes it a little bit better. The Fields class and the controller method make it easier/clearer to validate the fields.

Unfortunately, I still couldn't find a way to prevent WordPress from saving the post at all. The onValidateSave method is called from the save_post action, which is definitely too late. I'm not sure which, if there is one at all, hook to intercept to prevent a post from being saved initially.

You may also want to link to this tutorial/guide from the documentation?

[kevindees]

I've updated the docs for this one.