vue-vuelidate-jsonschema/src/validators/dependencies.js

Create validation definitions for vuelidate based on json schema

var vuelidate = require('vuelidate')
var isPlainObject = require('lodash/isPlainObject')
var validate = require('../validate')

module.exports = function dependenciesValidator(propertySchema, dependencies, getPropertyValidationRules) {
  return vuelidate.withParams({
    type: 'schemaDependencies',
    dependencies: dependencies,
    schema: propertySchema
  }, function(obj) {
    if (!isPlainObject(obj)) { return true }

    var properties = Object.keys(obj)

    var propertiesCausingDependencyCheck = properties.filter(function(key) {
      return dependencies.hasOwnProperty(key)
    })

    return propertiesCausingDependencyCheck.reduce(function(valid, key) {
      if (!valid) { return valid }

      var dependencyForProp = dependencies[key]
      if (Array.isArray(dependencyForProp)) {
        return dependencyForProp.every(function(dep) {
          return properties.indexOf(dep) !== -1
        })
      } else {
        return validate(getPropertyValidationRules(dependencyForProp), obj)
      }
    }, true)
  })
}