conditional optional

Is there any way to have a ‘conditional optional’? I’m trying to make a situation work where a key would only be required when another key is set.

new SimpleSchema({
  firstname: {
    type: String,
    label: "First name",
    optional: true
  },
  lastname: {
    type: String,
    label: "Last name",
    optional: true
  }
})

Considering this schema. How would I go ahead and make lastname required or optional: false when and only when firstname is set?

[andrenanninga]

Hi Aldeed,

With the recent deprecation of valueIsAllowed I instead tried to use a custom method to do this conditional optional check. But this issue (#30) seems to have resurfaced.

Consider this schema:

MySchema = new SimpleSchema({
  firstname: {
    type: String,
    label: "First name",
    optional: true,
    custom: function() {
      if(/* condition where this field would be required */) {
        return 'required';
      }
    }
  }
}

In this example the custom method isn’t triggered when the firstname is empty.

Do you know how we could solve this?

Thanks.

[chrische]

No, sorry, what I said was not correct. They are not SimpleSchema instances, they are Collection2 instances. ( do you have a reference to where you do those basic tests ? I am not familiar with the code yet, but interested and also interested in having an implementation of foreign Keys. )

And the problem here was, that I didn’t check if the key was set, so I tried to validate something which was not updated. Now I check in my custom function if the key isSet and if so, I check for the value existing in the other collection. Works like a charm now 😃

Thanks for the help !