Ng-surveys NPM

ng-surveys

Getting started

First install through npm:

npm install --save ng-survey

Next install peer dependencies

  npm install --save @angular/cdk @ckeditor/ckeditor5-angular @ckeditor/ckeditor5-build-classic bootstrap ngx-bootstrap jquery @fortawesome/fontawesome-free

Import the ng-survey module into your apps module:

import { NgModule } from '@angular/core';
import { NgSurveysModule } from 'ng-surveys';

@NgModule({
  imports: [
    ...
    NgSurveysModule
  ],
  ...
})
export class AppModule { }

Add Bootstrap and Font Awesome to your angular.json to the styles and scripts array under build target

{  
   "build":{  
      "styles":[  
         "src/styles.css",
         "node_modules/bootstrap/dist/css/bootstrap.min.css",
         "node_modules/@fortawesome/fontawesome-free/css/all.min.css"
      ],
      "scripts":[  
         "node_modules/jquery/dist/jquery.min.js",
         "node_modules/bootstrap/dist/js/bootstrap.min.js"
      ]
   }
}

NgBuilderViewerComponent

What is it? - Where your users build a survey.

Example

  <ngs-builder-viewer
    [options]="options"
  ></ngs-builder-viewer>

Options

An object with 6 optional properties: 1. importSurvey * Object with callback property to import a new survey. * Callback should return type of NgSurveyState or Observable. 2. surveyButtons Array of objects used to specify a custom survey buttons. Object has 4 properties: title, icon, text, and callback. * Callback has one parameter of NgSurveyState type.
3. importPage * Object with callback property to import a new page. * Callback should return type of IPageAndElementAndOptionAnswers or Observable. 4. pageButtons Array of objects used to specify a custom survey buttons. Object has 4 properties: title, icon, text, and callback. * Callback has one parameter of IPageAndElementAndOptionAnswers type. 5. importElement * Object with callback property to import a new element. * Callback should return type of IElementAndOptionAnswers or Observable. 6. elementButtons Array of objects used to specify a custom survey buttons. Object has 4 properties: title, icon, text, and callback. * Callback has one parameter of IElementAndOptionAnswers type.

Options Example

export class BuilderViewerContainerComponent implements OnInit {
  options: IBuilderOptions;

  constructor(private http: HttpClient) { }

  ngOnInit() {
    this.options = {
      importSurvey: {
        callback: this.importSurvey.bind(this),
      },
      surveyButtons: [{
        title: 'Save Survey to DB',
        icon: 'fas fa-save',
        text: 'Save',
        callback: this.saveSurvey,
      }],
      importElement: {
        callback: this.importElement.bind(this),
      },
      elementButtons: [{
        title: 'Save Element to DB',
        icon: 'fas fa-save',
        text: 'Save',
        callback: this.saveElement,
      }]
    };
  }

  importSurvey(): Observable<NgSurveyState> {
    // Mocking get request
    return this.getSurvey();
  }

  importElement(): Observable<IElementAndOptionAnswers> {
    // Mocking get request
    return this.getElement();
  }

  getSurvey(): Observable<NgSurveyState> {
    return this.http.get('assets/survey-data.json').pipe(map((res: NgSurveyState) => {
      return {
        survey: res.survey,
        pages: deserializeUtils.deserializePages(res.pages),
        elements: deserializeUtils.deserializeElements(res.elements),
        optionAnswers: deserializeUtils.deserializeOptionAnswersMaps(res.optionAnswers),
        builderOptions: new BuilderOptionsModel(),
      };
    }));
  }

  getElement(): Observable<IElementAndOptionAnswers> {
    return this.http.get('assets/element-data.json').pipe(map((res: IElementAndOptionAnswers) => {
      return {
        element: res.element,
        optionAnswers: deserializeUtils.deserializeOptionAnswersMap(res.optionAnswers),
      };
    }));
  }

  saveSurvey(ngSurveyState: NgSurveyState): void {
    // Add post request to save survey data to the DB
    console.log('ngSurveyState: ', ngSurveyState);
  }

  saveElement(element: IElementAndOptionAnswers): void {
    // Add post request to save survey data to the DB
    console.log('element: ', element);
  }

}

NgModelViewerComponent

What is it? - Where users can view the survey model.

Example

  <ngs-model-viewer></ngs-model-viewer>

NgSurveyViewerComponent

What is it? - Where users can interact with the built survey.

Example

  <ngs-survey-viewer></ngs-survey-viewer>

NgSurveysService

What is it? - A service that provides methods to retrieve the survey state. Methods listen to the latest state changes in the stream and returns changes that occur to a specific state.

getNgSurveyState()

Listen to the latest state changes in the stream.
@returns: Observable\<NgSurveyState>

getSurveyChanges()

Listen to the latest survey state changes in the stream.
@returns: Observable\<INgSurvey>

getPagesChanges()

Listen to the latest pages state changes in the stream.
@returns: Observable\<IPageMap>

getElementsChanges()

Listen to the latest element state changes in the stream.
@returns: Observable\<IElementsMaps>

getElementsByPageIdChanges()

Listen to the latest element state changes of a page in the stream.
@param: pageId to retrieve elements of a specific page
@returns: Observable\<IElementsMap>

getOptionAnswersChanges()

Listen to the latest option answers state changes in the stream.
@returns: Observable\<IOptionAnswersMaps>

getOptionAnswersByElementIdChanges()

Listen to the latest option answers state changes of an element in the stream.
@param: elementId to retrieve option answers of a specific element
@returns: Observable\<IOptionAnswersMap>

NgSurveysService Example

import {NgSurveysService, NgSurveyState, IPageMap} from 'ng-surveys';

...
export class AppComponent implements OnInit {
  ngSurveyState: NgSurveyState;
  pages: IPageMap;
    
  constructor(
    private ngSurveys$: NgSurveysService,
  ) {}
    
  ngOnInit() {
    this.ngSurveys$.getNgSurveyState().subscribe(res => {
      this.ngSurveyState = res;
    });
    
    this.ngSurveys$.getPagesChanges().subscribe(pagesRes => {
      this.pages = pagesRes;
    });
  }
}

Development

Clone repo
Install dependencies:

npm install

Building the Library

Before we can use ng-surveys library we need to build it:

ng build ng-surveys

With Angular CLI v6.2 we can use the --watch flag so that every time a file changes Angular CLI performs a partial build that emits the amended files: