Add new requiredKeys option specifically for object keys #510
Description
The idea I had is to allow reusing a schema for CRUD purposes in an API easily. When creating an object many fields are required, however when updating that object those same fields may not be.
Currently you have to create two entirely separate schemas, one with the required fields and one without. For example:
var createSchema = Joi.object().keys({
name: Joi.string().required(),
age: Joi.number().integer().required
});
var updateSchema = Joi.object().keys({
name: Joi.string(),
age: Joi.number().integer()
});What I'm envisioning is being able to extend an existing object schema by declaring an array of keys as required, so instead you could do:
var updateSchema = Joi.object().keys({
name: Joi.string(),
age: Joi.number().integer()
});
var createSchema = updateSchema.requiredKeys(['name', 'age']);Alternatively you could so a similar thing with the optional method:
var createSchema = Joi.object().keys({
name: Joi.string().required(),
age: Joi.number().integer().required()
});
var updateSchema = createSchema.optionalKeys(['name', 'age']);Thoughts?