Allowing custom properties

What do you think of allowing custom properties to let other packages have the possibility to enhance the Simple Schema with additional information? As an example:

var schema = new SimpleSchema({
    'image' : {
        'type' : String,
        'otherPackage' : {
            'animated' : true
        }
    }
});

I’d also be okay with only one property called “custom” or something where one can define such informations.

[aldeed]

Good question. A few points:

• This is possible using SimpleSchema.extendOptions and mySimpleSchema.validator. These are undocumented, but collection2 uses them to add unique, autoValue, denyInsert, and denyUpdate (and the upcoming index option). Note that validator adds a custom validator to the SimpleSchema instance rather than to all. This is necessary for one of the validations that collection2 does, but in general maybe there should be a SimpleSchema.addValidator or SimpleSchema.addKeyValidator that adds support to all SS instances. I think this is what you’re asking for.
• A related idea on my list is to add a custom option that takes a function or array of functions. The functions would return either true or an error type string (same as how mySimpleSchema.validator works now, but user-definable per field).

You can keep this open as a reminder to make these changes.

[serkandurusoy]

Great, thanks. I’ll dive right in.