DoubleAgentValidator

This package serves as complement to the java library called doubleagentvalidator.

This is a javascript library which allow to reuse the same json schemas used in the backend rest application to validates the data at the frontend.

This libs depends on:

• Double Agent Validator dependencies:

  • ajv
  • lodash
  • angular2

How to use:

1. Install the package in your application:

Recommended: Use yarn to install this package. This package manager will create yarn.lock file, to avoid broken packages caused by npm inconsistent versions.

# Install yarn package manager 
npm i -g yarn
 
# Use yarn to install double-agent 
yarn install double-agent-validator

If you get the error PhantomJS not found on PATH, just do that:

TMP_DIR=/tmp yarn install

Or use npm to install this package

npm i --save double-agent-validator

2. In your AppModule initialization inject a factory to get the validation script from the backend and fill-in the DoubleAgentValdiator service with the schemas, keywords and formats.

 
 
import {  NgModule } from '@angular/core';
import { DoubleAgentValidatorModule, DOUBLE_AGENT_VALIDATOR_SCHEMA_URL} from 'double-agent-validator';
 
 
@NgModule(
  {
    imports: [ DoubleAgentValidatorModule ],
    providers: [
      {
        provide: 'http://localhost:8080/schemas', /* here you should point to your double-validator backend endpoint */
        useValue: url
      }
    ]
  }
)
export class AppModule { }

Great!!! You just did it, now the following services are available on your Angular 2 App:

DoubleAgentValidatorService

This class allow you to validate some data in a service layer using its validate method, which checks some data againts an specific schema you pass to the service.

Your service will be something like the example bellow:

 
import { DoubleAgentValidator } from 'double-agent-validator';
import { ValidationResult } from 'double-agent-validator/models';
 
@Injectable()
class MyService {
  constructor(private doubleAgentValidator: DoubleAgentValidator) {
 
  }
 
 
  validateContribuinte(): ValidationResult {
    /***
    // returns something like this
    {
      hasErrors: true;
      errors: [
        keyword: 'required',
        dataPath: '.id',
        message: 'field is missing'
      ];
    }
    */
    return this.doubleAgentValidator.validate('contribuinte-v1', data);
  }
}

DoubleAgentFormGroupBuilder

This class can be used to build FormGroup containing the controls representing each property in the schema including the respective validators.

Example:

import { DoubleAgentFormGroupBuilder } from 'double-agent-validator';
import { FormGroup } from '@angular/forms';
 
@Component({
  selector: 'my-form',
  template: `
  <form [formGroup]="formGroup">
    <div class="form-group">
      <label for="nome">Nome: </label>
      <input type="text" id="nome" formControlName="nome"> 
    </div>
    <!-- your another controls for the others properties goes here too -->
  </form>`
})
export class MyFormComponent {
    private shemaName = 'contribuinte-v1';
    private formGroup: FormGroup;
    constructor(private doubleAgentFormGroupBuilder: DoubleAgentFormGroupBuilder) {
      this.formGroup = doubleAgentFormGroupBuilder.build(this.schemaName);
    }
}

If you want create formGroup without validators because your application will handle the validation process itself, you can do this:

import { DoubleAgentFormGroupBuilder } from 'double-agent-validator';
import { FormGroup } from '@angular/forms';
 
@Component({
  selector: 'my-form',
  template: `
  <form [formGroup]="formGroup">
    <div class="form-group">
      <label for="nome">Nome: </label>
      <input type="text" id="nome" formControlName="nome"> 
    </div>
    <!-- your another controls for the others properties goes here too -->
  </form>`
})
export class MyFormComponent {
    private shemaName = 'contribuinte-v1';
    private formGroup: FormGroup;
    constructor(private doubleAgentFormGroupBuilder: DoubleAgentFormGroupBuilder) {
      this.formGroup = doubleAgentFormGroupBuilder.build(this.schemaName, {
        createValidators: false
      });
    }
}

TODO

• Provide the service to allow error messages mapping

• Website to share the library api documentation