list formats

[zaach]

There is currently an Array format, but you can't restrict the values in the array to a certain type.

I was thinking of just wrapping the format property in an array to signify that it should be a list with elements of only that type.

E.g.:

var config = convict({
  foo: {
    default: ["5 seconds", "10 seconds"],
    format: ["duration"]
  }
});

One concern is that it looks similar to the enum format, although enums shouldn't be allowed to have a single element. An alternative would be to add a list: true to the schema.

[A-312]

You can make your own format :

  foo: {
    child: ["5 seconds", "10 seconds"],
    format: duration-array
  }



convict.addFormat({
  name: 'duration-array',
  validate: function(children, schema) {
    if (!Array.isArray(children)) {
      throw new Error('must be of type Array');
    }

    for (child of children) {
      convict({
        child: { default: '', format: 'duration' }
      }).load({ child: child }).validate();
    }
  }
});

[evisong]

Also refer to #238.

[A-312]

And #312 ?

convict.addFormat({
  name: /^enum\[.*\]$/, //enum[duration]
  // ...
})

[A-312]

This issue should be closed because we have several way to do that.