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Small example of using Ajv and JSONSchema to validate JSON model.
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// Common schema. | |
const defSchema = { | |
$id: "http://my-domain.com/schemas/defs.json", | |
definitions: { | |
URL: { | |
type: "string", | |
format: "uri", | |
pattern: "^(https?|wss?|ftp)://" | |
} | |
} | |
}; | |
// Each model schema. | |
const campaignSchema = { | |
$id: "http://my-domain.com/schemas/campaign-schema.json", | |
title: "Campaign", | |
description: "", | |
type: "object", | |
required: ['title'], | |
properties: { | |
title: { | |
type: "string" | |
}, | |
backgroundImageURL: { | |
$ref: "defs.json#/definitions/URL" | |
} | |
} | |
} | |
var ajv = new Ajv(); | |
var campaignValidator = ajv.addSchema(defSchema).compile(campaignSchema); | |
const campaign = { | |
backgroundImageURL: "https://www.google.com" | |
} | |
var valid = campaignValidator(campaign); | |
// Using the AJV directly we can use "errorsText()" | |
// Otherwhise, we have to get errors from the validator | |
// Copy errors or it will be overwritten on next run. | |
// var valid = ajv.addSchema(campaignSchema, 'campaignSchema').validate('campaignSchema', campaign); | |
console.log({ valid }); | |
if (!valid) { | |
const { errors } = campaignValidator; | |
// const errors = ajv.errorsText(); | |
console.log({ errors }); | |
} |
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