2018-08-15 16:48:51 +08:00
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<!DOCTYPE HTML>
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2020-09-23 16:23:38 +08:00
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<html lang="en">
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2018-08-15 16:48:51 +08:00
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<head>
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2020-09-23 16:23:38 +08:00
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<meta charset="utf-8">
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2018-08-15 16:48:51 +08:00
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<title>JSONEditor | Custom validation</title>
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<link href="../dist/jsoneditor.css" rel="stylesheet" type="text/css">
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<script src="../dist/jsoneditor.js"></script>
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<style type="text/css">
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body {
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width: 600px;
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font: 11pt sans-serif;
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}
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#jsoneditor {
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width: 100%;
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height: 500px;
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}
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</style>
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</head>
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<body>
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<h1>Custom validation</h1>
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<p>
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This example demonstrates how to run custom validation on a JSON object.
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The validation is available in all modes.
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</p>
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<div id="jsoneditor"></div>
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<script>
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2019-08-29 21:45:32 +08:00
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const json = {
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2018-08-15 16:48:51 +08:00
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team: [
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{
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name: 'Joe',
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age: 17
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},
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{
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name: 'Sarah',
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age: 13
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},
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{
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name: 'Jack'
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}
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]
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2019-08-29 21:45:32 +08:00
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}
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2018-08-15 16:48:51 +08:00
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2019-08-29 21:45:32 +08:00
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const options = {
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2018-08-15 16:48:51 +08:00
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mode: 'tree',
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modes: ['code', 'text', 'tree', 'preview'],
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2018-08-15 16:48:51 +08:00
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onValidate: function (json) {
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// rules:
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// - team, names, and ages must be filled in and be of correct type
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// - a team must have 4 members
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// - at lease one member of the team must be adult
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2019-08-29 21:45:32 +08:00
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const errors = []
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2018-08-15 16:48:51 +08:00
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2018-08-15 18:21:27 +08:00
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if (json && Array.isArray(json.team)) {
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2018-08-15 16:48:51 +08:00
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// check whether each team member has name and age filled in correctly
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json.team.forEach(function (member, index) {
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if (typeof member !== 'object') {
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2019-08-29 21:45:32 +08:00
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errors.push({path: ['team', index], message: 'Member must be an object with properties "name" and "age"'})
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2018-08-15 16:48:51 +08:00
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}
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if ('name' in member) {
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if (typeof member.name !== 'string') {
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2019-08-29 21:45:32 +08:00
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errors.push({path: ['team', index, 'name'], message: 'Name must be a string'})
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2018-08-15 16:48:51 +08:00
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}
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2019-08-29 21:45:32 +08:00
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} else {
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errors.push({path: ['team', index], message: 'Required property "name"" missing'})
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2018-08-15 16:48:51 +08:00
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}
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if ('age' in member) {
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if (typeof member.age !== 'number') {
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2019-08-29 21:45:32 +08:00
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errors.push({path: ['team', index, 'age'], message: 'Age must be a number'})
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2018-08-15 16:48:51 +08:00
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}
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2019-08-29 21:45:32 +08:00
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} else {
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errors.push({path: ['team', index], message: 'Required property "age" missing'})
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2018-08-15 16:48:51 +08:00
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}
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2019-08-29 21:45:32 +08:00
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})
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2018-08-15 16:48:51 +08:00
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// check whether the team consists of exactly four members
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if (json.team.length !== 4) {
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errors.push({path: ['team'], message: 'A team must have 4 members'})
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2018-08-15 16:48:51 +08:00
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}
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// check whether there is at least one adult member in the team
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const adults = json.team.filter(function (member) {
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return member ? member.age >= 18 : false
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})
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2018-08-15 16:48:51 +08:00
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if (adults.length === 0) {
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errors.push({path: ['team'], message: 'A team must have at least one adult person (age >= 18)'})
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2018-08-15 16:48:51 +08:00
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}
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2019-08-29 21:45:32 +08:00
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} else {
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errors.push({path: [], message: 'Required property "team" missing or not an Array'})
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2018-08-15 16:48:51 +08:00
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}
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2019-08-29 21:45:32 +08:00
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return errors
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2018-08-15 16:48:51 +08:00
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}
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2019-08-29 21:45:32 +08:00
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}
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2018-08-15 16:48:51 +08:00
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// create the editor
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2019-08-29 21:45:32 +08:00
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const container = document.getElementById('jsoneditor')
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const editor = new JSONEditor(container, options, json)
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editor.expandAll()
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2018-08-15 16:48:51 +08:00
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</script>
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</body>
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</html>
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