default value

[conradoqg]

I think that defaut value in schema isn't working...

[conradoqg]

This will resolve the 'default' validation:

ValidatorContext.prototype.validateObjectRequiredProperties = function validateObjectRequiredProperties(data, schema) {
        if (schema.required !== undefined) {
            for (var i = 0; i < schema.required.length; i++) {
                var key = schema.required[i];
                if (data[key] === undefined) {
                    if (schema.properties && schema.properties[key] && schema.properties[key].default) {
                        data[key] = schema.properties[key].default
                    } else {
                        var error = this.createError(ErrorCodes.OBJECT_REQUIRED, {key: key}).prefixWith(null, "" + i).prefixWith(null, "required");
                        if (this.handleError(error)) {
                            return error;
                        }
                    }
                }
            }
        }
        return null;
    };

[geraintluff]

In a normal validation scenario, the data is not modified. Therefore, if a required property isn't present then validation fails.

You seem to be talking about "coercive validation", where the data is altered to fit the schema. Is this a request for coercive validation support?

[vweevers]

If it's not coerced, what's the use of the default keyword?

[geraintluff]

For non-coercive validation? None, it's informative only, much like "title" or "description".

If you want coercive validation, I started a project tv4-coerce. It hasn't generated much interest yet, but if you like I can look at putting default support into it.

[vweevers]

Ok, makes sense. I was just curious. For now I only need defaults, so I'll implement it myself; tv4-coerce is overkill. But I'll keep an eye on it. Thanks!