Add more settings for image field in getConfigAllowContext

[Juergen]

Hello,

it would be great if some more settings will be added to getConfigAllowContext for the image field that can be used in template context via a Hook.

This type of hook cannot be used to change fe. minWidth:

$wire->addHookMethod('FieldtypeImage::getConfigAllowContext', function (HookEvent $e) {
    $allowables = ['minWidth', 'minHeight', 'noLang', 'clientQuality'];
    $e->return = array_merge($e->return, $allowables);
});

In my case I would need the minWidth setting to be configurable in the image field in template context. I need a very large width for my slider images and a medium width for my article images. So slider images must be at least 1600px in width and article images at least 800px in width. 

For now I have to use advanced settings at image fields to achive this, but it would be great if this could be achived via a hook too, but it seems that this is not possible for the moment.

Some other settings that could be useful are 'minWidth', 'minHeight', 'noLang', 'clientQuality'.

Thanks

Advanced settings by changing "$config->advanced = true;" works great in this case, so no need for adjustments.

Edited January 28, 2018 by Juergen
writing mistake