How to use json-logic-js - 10 common examples

// Execute the script
        const script = new vm.Script(`result = ${func.toString()}(${argStr});`);
        script.runInContext(sandbox, { timeout: 250 });

        returnVal = sandbox.result;
      }
    }
    catch (err) {
      returnVal = null;
      console.warn(`An error occured within custom function for ${componentKey}`, err);
    }
  }
  else if (typeof func === 'object') {
    try {
      returnVal = jsonLogic.apply(func, args);
    }
    catch (err) {
      returnVal = null;
      console.warn(`An error occured within custom function for ${componentKey}`, err);
    }
  }
  else if (func) {
    console.warn(`Unknown function type for ${componentKey}`);
  }
  return returnVal;
}

// Configure JsonLogic
lodashOperators.forEach((name) => jsonLogic.add_operation(`_${name}`, _[name]));

// Retrieve Any Date
jsonLogic.add_operation('getDate', (date) => {
  return moment(date).toISOString();
});

// Set Relative Minimum Date
jsonLogic.add_operation('relativeMinDate', (relativeMinDate) => {
  return moment().subtract(relativeMinDate, 'days').toISOString();
});

// Set Relative Maximum Date
jsonLogic.add_operation('relativeMaxDate', (relativeMaxDate) => {
  return moment().add(relativeMaxDate, 'days').toISOString();
});

export { jsonLogic, moment };

/**
 * Evaluate a method.
 *
 * @param func
 * @param args
 * @return {*}
 */
export function evaluate(func, args, ret, tokenize) {
  let returnVal = null;
  const component = args.component ? args.component : { key: 'unknown' };
  if (!args.form && args.instance) {

import _ from 'lodash';
import jsonLogic from 'json-logic-js';
import moment from 'moment';

import {lodashOperators} from './jsonlogic/operators';

// Configure JsonLogic
lodashOperators.forEach((name) => jsonLogic.add_operation(`_${name}`, _[name]));

// Retrieve Any Date
jsonLogic.add_operation('getDate', (date) => {
  return moment(date).toISOString();
});

// Set Relative Minimum Date
jsonLogic.add_operation('relativeMinDate', (relativeMinDate) => {
  return moment().subtract(relativeMinDate, 'days').toISOString();
});

// Set Relative Maximum Date
jsonLogic.add_operation('relativeMaxDate', (relativeMaxDate) => {
  return moment().add(relativeMaxDate, 'days').toISOString();
});

const FormioUtils = {
  jsonLogic, // Share

// Configure JsonLogic
lodashOperators.forEach((name) => jsonLogic.add_operation(`_${name}`, _[name]));

// Retrieve Any Date
jsonLogic.add_operation('getDate', (date) => {
  return moment(date).toISOString();
});

// Set Relative Minimum Date
jsonLogic.add_operation('relativeMinDate', (relativeMinDate) => {
  return moment().subtract(relativeMinDate, 'days').toISOString();
});

// Set Relative Maximum Date
jsonLogic.add_operation('relativeMaxDate', (relativeMaxDate) => {
  return moment().add(relativeMaxDate, 'days').toISOString();
});

const FormioUtils = {
  jsonLogic, // Share

  /**
   * Determines the boolean value of a setting.
   *
   * @param value
   * @return {boolean}
   */
  boolValue(value) {
    if (_.isBoolean(value)) {
      return value;
    }

import _ from 'lodash';
import jsonLogic from 'json-logic-js';
import moment from 'moment';

import {lodashOperators} from './jsonlogic/operators';

// Configure JsonLogic
lodashOperators.forEach((name) => jsonLogic.add_operation(`_${name}`, _[name]));

// Retrieve Any Date
jsonLogic.add_operation('getDate', (date) => {
  return moment(date).toISOString();
});

// Set Relative Minimum Date
jsonLogic.add_operation('relativeMinDate', (relativeMinDate) => {
  return moment().subtract(relativeMinDate, 'days').toISOString();
});

// Set Relative Maximum Date
jsonLogic.add_operation('relativeMaxDate', (relativeMaxDate) => {
  return moment().add(relativeMaxDate, 'days').toISOString();
});

const FormioUtils = {
  jsonLogic, // Share

  /**
   * Determines the boolean value of a setting.
   *
   * @param value
   * @return {boolean}

export function checkJsonConditional(component, json, row, data, form, onError) {
  try {
    return jsonLogic.apply(json, {
      data,
      row,
      form,
      _,
    });
  }
  catch (err) {
    console.warn(`An error occurred in jsonLogic advanced condition for ${component.key}`, err);
    return onError;
  }
}

import jsonLogic from 'json-logic-js';

function lowercase(a) {
	return a.toLowerCase();
}

function toNumber(a) {
	if (typeof a === 'number') {
		return a;
	} else if (typeof a === 'string') {
		return parseInt(a, 10);
	}
	throw new TypeError(`${a.toString()} is not a number`);
}

jsonLogic.add_operation('lowercase', lowercase);
jsonLogic.add_operation('toNumber', toNumber);

/**
 * If in the path [] appears it will be populated
 * with current key indices value.
 */
function replaceArrayNotationByIndexes(path, key) {
	if (!path || !path.includes('[]')) {
		return path;
	}
	return path
		.split(/\.|\[/)
		.map((part, index) => {
			if (part === ']') {
				return key[index];
			}

function lowercase(a) {
	return a.toLowerCase();
}

function toNumber(a) {
	if (typeof a === 'number') {
		return a;
	} else if (typeof a === 'string') {
		return parseInt(a, 10);
	}
	throw new TypeError(`${a.toString()} is not a number`);
}

jsonLogic.add_operation('lowercase', lowercase);
jsonLogic.add_operation('toNumber', toNumber);

/**
 * If in the path [] appears it will be populated
 * with current key indices value.
 */
function replaceArrayNotationByIndexes(path, key) {
	if (!path || !path.includes('[]')) {
		return path;
	}
	return path
		.split(/\.|\[/)
		.map((part, index) => {
			if (part === ']') {
				return key[index];
			}
			return part;

function lowercase(a) {
	return a.toLowerCase();
}

function toNumber(a) {
	if (typeof a === 'number') {
		return a;
	} else if (typeof a === 'string') {
		return parseInt(a, 10);
	}
	throw new TypeError(`${a.toString()} is not a number`);
}

jsonLogic.add_operation('lowercase', lowercase);
jsonLogic.add_operation('toNumber', toNumber);

/**
 * If in the path [] appears it will be populated
 * with current key indices value.
 */
function replaceArrayNotationByIndexes(path, key) {
	if (!path || !path.includes('[]')) {
		return path;
	}
	return path
		.split(/\.|\[/)
		.map((part, index) => {
			if (part === ']') {
				return key[index];
			}
			return part;

import jsonLogic from 'json-logic-js';

function lowercase(a) {
	return a.toLowerCase();
}

function toNumber(a) {
	if (typeof a === 'number') {
		return a;
	} else if (typeof a === 'string') {
		return parseInt(a, 10);
	}
	throw new TypeError(`${a.toString()} is not a number`);
}

jsonLogic.add_operation('lowercase', lowercase);
jsonLogic.add_operation('toNumber', toNumber);

/**
 * If in the path [] appears it will be populated
 * with current key indices value.
 */
function replaceArrayNotationByIndexes(path, key) {
	if (!path || !path.includes('[]')) {
		return path;
	}
	return path
		.split(/\.|\[/)
		.map((part, index) => {
			if (part === ']') {
				return key[index];
			}