testing anyOf in json schema where value must be true - jsonschema

Question

I'm validating a json scheme where I need to check if the json has an array of 'activities', and if not, if it has a 'live' attribute which must be true.
My schema is quite simple note the enum is not working
const viewSchema = {
"type": "object",
"anyOf": [
{"required": ["live"]},
{"required": ["activities"]}
],
"properties":{
"title": {"type": "string"},
"live": {"type": "boolean", "enum": [ true ]},
"activities": {"type": "array"}
}
So I am trying to validate against the following
isValid({title: 'a title'}) // false: activities or live required
isValid({title: 'a title', activities: []}) // true
isValid({title: 'a title', live: true}) // true
isValid({title: 'a title', live: false) // true - this should be false

Answer 1

It's a little redundant, but you can use oneOf and two distinct schema to achieve this.
Here's an example using AJV:
// Code goes here
var ajv = new Ajv({
$data: true,
verbose: true
});
let schema = {
"type": "object",
"oneOf": [{
"type": "object",
"properties": {
"live": {
"type": "boolean",
"enum": [true]
},
},
"required": ["live"]
},
{
"type": "object",
"properties": {
"activities": {
"type": "array"
}
},
"required": ["activities"]
}
]
};
ajv.validate(schema, {
title: 'a title'
}) // false: activities or live required
console.log('ERRORS: ', this.ajv.errors)
ajv.validate(schema, {
title: 'a title',
activities: []
}) // true
console.log('ERRORS: ', this.ajv.errors)
ajv.validate(schema, {
title: 'a title',
live: true
}) // true
console.log('ERRORS: ', this.ajv.errors)
ajv.validate(schema, {
title: 'a title',
live: false
}) // this is now invalid
console.log('ERRORS: ', this.ajv.errors)
<script src="https://cdnjs.cloudflare.com/ajax/libs/ajv/5.3.0/ajv.bundle.js"></script>