//...
const conf = require('../conf');
const ajv = new Ajv({
schemaId: 'auto',
allErrors: true,
verbose: true,
});
ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-04.json'));
ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-06.json'));
function URIfromId(id) {
return url.parse(id).path;
}
//...
const ajv = new Ajv()
ajv.addKeyword({
keyword: "idExists",
async: true,
type: "number",
validate: checkIdExists,
})
async function checkIdExists(schema, data) {
// this is just an example, you would want to avoid SQL injection in your code
const rows = await sql(`SELECT id FROM ${schema.table} WHERE id = ${data}`)
return !!rows.length // true if record is found
}
const schema = {
$async: true,
properties: {
userId: {
type: "integer",
idExists: {table: "users"},
},
postId: {
type: "integer",
idExists: {table: "posts"},
},
},
}
const validate = ajv.compile(schema)
validate({userId: 1, postId: 19})
.then(function (data) {
console.log("Data is valid", data) // { userId: 1, postId: 19 }
})
.catch(function (err) {
if (!(err instanceof Ajv.ValidationError)) throw err
// data is invalid
console.log("Validation errors:", err.errors)
})
ajv.addKeyword({
keyword: "constant",
validate: (schema, data) =>
typeof schema == "object" && schema !== null ? deepEqual(schema, data) : schema === data,
errors: false,
})
const schema = {
constant: 2,
}
const validate = ajv.compile(schema)
console.log(validate(2)) // true
console.log(validate(3)) // false
const schema = {
constant: {foo: "bar"},
}
const validate = ajv.compile(schema)
console.log(validate({foo: "bar"})) // true
console.log(validate({foo: "baz"})) // false
ajv.addKeyword({
keyword: "range",
type: "number",
schemaType: "array",
implements: "exclusiveRange",
compile: ([min, max], parentSchema) =>
parentSchema.exclusiveRange === true
? (data) => data > min && data < max
: (data) => data >= min && data <= max,
})
const schema = {range: [2, 4], exclusiveRange: true}
const validate = ajv.compile(schema)
console.log(validate(2.01)) // true
console.log(validate(3.99)) // true
console.log(validate(2)) // false
console.log(validate(4)) // false
const validate = new Ajv().addSchema(schema).addFormat(name, regex).getSchema(uri)