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adding wrapErrors options for wrapping errors into error class #57

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merged 1 commit into from May 21, 2015

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xpepermint
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Super simple solution for #51.

Example:

// ./validate.js

var validate = require('validate.js');
var ValidationError = require('../errors/validation_error');

validate.Promise = require('bluebird');
validate.options = validate.async.options = {
  fullMessages: false,
  wrapErrors: ValidationError
};

module.exports = validate;
// ./validation_error

module.exports = function ValidationError(params, message, options) {
  Error.captureStackTrace(this, this.constructor);
  this.name = this.constructor.name;
  this.params = params;
  this.message = message || 'Validation Error';
  this.options = options;
};

require('util').inherits(module.exports, Error);
// ./index.js

var validate = require('./validate');
var ValidationError = require('./validation_error');

var data = {
  name: ''
};
var contraints = {
  name: { presence: true, length: { minimum: 10 } }
};

validate.async(data, contraints).then(function() {
  console.log('ok');
}).catch(ValidationError, function(err) {
  console.log('ValidationError', err);
}).catch(function(err) {
  console.log('SystemError', err);
});

Run as

node index.js

@ansman
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ansman commented May 21, 2015

I like this solution a lot! Super clean and maintains backwards compatibility.

I'll clean it up a bit and add some tests.

ansman added a commit that referenced this pull request May 21, 2015
adding `wrapErrors` options for wrapping errors into error class
@ansman ansman merged commit 259cbee into ansman:master May 21, 2015
@xpepermint
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Cool, thx!

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2 participants