Cannot read property 'length' of undefined

[ankkk]

• Laravel Version: 7.11.0
• Nova Version: 3.6.0
• PHP Version: 7.4
• Database Driver & Version: Postgres 12
• Operating System and Version: Mac OS (10.15.4)
• Browser type and version: Chrome 83 (Beta)

Description:

I have a model with name: Card. When trying to open a resource , I get an error:

TypeError: Cannot read property 'length' of undefined

And network 200 GET response:

[{"width":"full","component":"help","prefixComponent":false,"onlyOnDetail":false}]

[alanpilloud]

I also had the same issue. This comes from the resource being also named Card.

Then, I noticed that this warning was shown after the resource creation :

You *must* override the uriKey method for your Card resource.

I found the solution here : #857

Which is to add this method in the Nova resource :

/**
 * Get the URI key for the resource.
 *
 * @return string
 */
public static function uriKey()
{
    return 'kard';
}

[jbrooksuk]

When you generate a resource, if it's using a reserved name - like "Card" - you are asked to override the uriKey.