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69 lines
1.8 KiB
JavaScript
69 lines
1.8 KiB
JavaScript
'use strict';
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var sequences = {};
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var DEFAULTS = {
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timestamp: function() { return Date.now(); },
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datetime: function() { return (new Date).toISOString(); },
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date: function() { return (new Date).toISOString().slice(0, 10); },
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time: function() { return (new Date).toISOString().slice(11); },
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random: function() { return Math.random(); },
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randomint: function (args) {
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var limit = args && args.max || 2;
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return function() { return Math.floor(Math.random() * limit); };
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},
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seq: function (args) {
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var name = args && args.name || '';
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sequences[name] = sequences[name] || 0;
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return function() { return sequences[name]++; };
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}
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};
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module.exports = function defFunc(ajv) {
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defFunc.definition = {
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compile: function (schema, parentSchema, it) {
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var funcs = {};
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for (var key in schema) {
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var d = schema[key];
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var func = getDefault(typeof d == 'string' ? d : d.func);
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funcs[key] = func.length ? func(d.args) : func;
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}
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return it.opts.useDefaults && !it.compositeRule
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? assignDefaults
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: noop;
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function assignDefaults(data) {
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for (var prop in schema)
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if (data[prop] === undefined) data[prop] = funcs[prop]();
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return true;
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}
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function noop() { return true; }
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},
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DEFAULTS: DEFAULTS,
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metaSchema: {
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type: 'object',
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additionalProperties: {
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type: ['string', 'object'],
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additionalProperties: false,
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required: ['func', 'args'],
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properties: {
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func: { type: 'string' },
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args: { type: 'object' }
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}
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}
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}
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};
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ajv.addKeyword('dynamicDefaults', defFunc.definition);
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return ajv;
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function getDefault(d) {
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var def = DEFAULTS[d];
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if (def) return def;
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throw new Error('invalid "dynamicDefaults" keyword property value: ' + d);
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}
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};
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