joi-validation-builder

joi-validation-builder is a library for constructing joi schemas from strings.

Installation

npm install joi-validation-builder

Usage

buildAndValidate helper function

buildAndValidate(schemaDescriptor, input, JoiOptions)

Arguments

• schemaDescriptor
  • An object whereby keys map to Joi schema description in the form of strings
• input
  • An object to be validated
• joiOptions
  • An object passed directly to Joi when validate() is called

Returns

• joi.ValidationResult

const { buildAndValidate } = require('joi-validation-builder');

const schemaDescriptor = {
  firstName: 'string:min=1,max=80,required',
  lastName: 'string:min=1,max=80,required',
  emailAddress: 'string:email',
  website: 'string:uri',
  age: 'number:integer,min=18,label=YearsPast',
  favouriteBand: 'string:valid=[Pantera;Faith No More;Judas Priest;Manowar]',
  hobbies: 'array:items=(string:valid=[metalwork;woodwork;beer brewing;charcuterie;fly fishing;cycling]),min=3',
  birthday: 'date:greater=1-1-1986'
};

const input = {
  firstName: 'Alex',
  lastName: 'Coulcher',
  emailAddress: '[email protected]',
  website: 'http://polyglot.rodeo',
  age: 34,
  favouriteBand: 'Faith No More',
  hobbies: ['metalwork', 'woodwork', 'beer brewing', 'charcuterie', 'fly fishing'],
  birthday: '01-15-1986'
};

const result = buildAndValidate(schemaDescriptor, input,  { abortEarly: false });
console.log(`Any Errors? ${result.error || 'nope'}\n\n`);

ValidationBuilder class

Constructor

const validationBuilder = new ValidationBuilder();

build

validationBuilder.build(schemaDescriptor)

Arguments

• schemaDescriptor
  • An object whereby keys map to Joi schema description in the form of strings

Returns

• joi.Schema

const { ValidationBuilder } = require('joi-validation-builder');

const validationBuilder = new ValidationBuilder();
const schema = validationBuilder.build(schemaDescriptor);
const { error } = schema.validate(input, { abortEarly: false });

console.log(error);

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT