The occurrence of DI within the directive leads to an unfamiliar providerProvider

Question

The occurrence of DI within the directive leads to an unfamiliar providerProvider

From my understanding, AngularJS automatically appends "Provider" to registered providers, so it's not necessary to include it in the name when calling them. However, I'm following this convention and still encountering an issue where the console throws an

Unknown provider: ReportProviderProvider <- ReportProvider <- reportDirective

In my project, I have a service, provider, and directive all related to a feature called Report, each in their own respective files: ReportProvider.js, ReportService.js, ReportDirective.js

When attempting to use the directive, I encounter the mentioned error. Why does Angular append "Provider" to my required dependency?

angular.module('thdmaterialApp')
  .provider('Report', function () {});

angular.module('thdmaterialApp')
  .service('Report', function (ReportProvider) {
});

angular.module('thdmaterialApp')
 .directive('report', function (ReportProvider) {} );

javascript angularjs

Answer 1

Answer №1

There is no requirement to format it as ReportProvider, simply inject Report. To utilize it in config, you will need to incorporate Provider. However, within DI, it functions like any other injectable service. It may be necessary to modify the name of the Report service.

Answer 2

There is no requirement to format it as ReportProvider, simply inject Report. To utilize it in config, you will need to incorporate Provider. However, within DI, it functions like any other injectable service. It may be necessary to modify the name of the Report service.

Answer 3

Answer №2

Are you attempting to inject a provider into your directive? Typically, providers are only used within config blocks to pre-configure a service, as stated in the AngularJS documentation:

The Provider recipe should be utilized when you need to expose an API for application-wide configuration that must be set before the application initializes. This is particularly useful for reusable services that may require slight variations between applications.

Additionally, your provider will need to define this.$get as a function that returns an object in order to function correctly.

Providers are typically used if there is a necessity to modify certain properties of a service under specific circumstances. You can see this demonstrated in a DEMO provided for further clarification.

app.js

var app = angular.module('thdmaterialApp', []);

app.controller('MainCtrl', function($scope, ReportService, Report) {
  $scope.serviceValue =  ReportService.value;
  $scope.value = Report.getValue();

});


app.provider('Report', function () {


  // If the config block is removed, this value will be displayed
  this.value = 'default';

  this.configureValue = function(newValue){
    this.value = newValue;
  }

  this.$get = function() {

        var value = this.value;
        return {
            getValue: function() {
                return value
            }
        }
    };

});

// Comment out this section and the default value will be returned
app.config(function(ReportProvider){
  ReportProvider.configureValue('new configured value');
});

app.service('ReportService', function () {
  return {
    value: 'I don\'t need to be configured.'
  };
});

index.html

<!DOCTYPE html>
<html ng-app="thdmaterialApp">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6c0d020b19000d1e42061f2c5d42584214">[email protected]</a>" src="https://code.angularjs.org/1.4.3/angular.js" data-semver="1.4.3"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <p>ReportService.value: {{serviceValue}}</p>
    <p>Report.getValue(): {{value}}</p>
  </body>

</html>

Answer 4

Are you attempting to inject a provider into your directive? Typically, providers are only used within config blocks to pre-configure a service, as stated in the AngularJS documentation:

The Provider recipe should be utilized when you need to expose an API for application-wide configuration that must be set before the application initializes. This is particularly useful for reusable services that may require slight variations between applications.

Additionally, your provider will need to define this.$get as a function that returns an object in order to function correctly.

Providers are typically used if there is a necessity to modify certain properties of a service under specific circumstances. You can see this demonstrated in a DEMO provided for further clarification.

app.js

var app = angular.module('thdmaterialApp', []);

app.controller('MainCtrl', function($scope, ReportService, Report) {
  $scope.serviceValue =  ReportService.value;
  $scope.value = Report.getValue();

});


app.provider('Report', function () {


  // If the config block is removed, this value will be displayed
  this.value = 'default';

  this.configureValue = function(newValue){
    this.value = newValue;
  }

  this.$get = function() {

        var value = this.value;
        return {
            getValue: function() {
                return value
            }
        }
    };

});

// Comment out this section and the default value will be returned
app.config(function(ReportProvider){
  ReportProvider.configureValue('new configured value');
});

app.service('ReportService', function () {
  return {
    value: 'I don\'t need to be configured.'
  };
});

index.html

<!DOCTYPE html>
<html ng-app="thdmaterialApp">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6c0d020b19000d1e42061f2c5d42584214">[email protected]</a>" src="https://code.angularjs.org/1.4.3/angular.js" data-semver="1.4.3"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <p>ReportService.value: {{serviceValue}}</p>
    <p>Report.getValue(): {{value}}</p>
  </body>

</html>

The occurrence of DI within the directive leads to an unfamiliar providerProvider

Answer №1

Answer №2

Similar questions

Choose all the checkboxes and set the value of the selected checkbox to 'on' using jQuery

Confirming that a lengthy string contains a sufficient number of breakable spaces for proper presentation

Navigating to an anchor link within an HTML document using React Router DOM in ReactJS

Is it possible to display a upload progress indicator without using a specialized ajax uploader

Error message: The context object is not iterable. Please note that it must be iterable in order to avoid

What is the reason javascript struggles to locate and replace strings with spaces in a URL?

I am interested in learning the process of obtaining the required points for a user to advance to the next level

Retrieve the initial value of the input element following a modification

`How can I retrieve environment variables in React or inject them into a React application?`

camera equipped with a three.js skybox

Retrieve the value of an array in reactjs based on a specific condition

The value returned by EntityRecognizer.resolveTime is considered as 'undefined'

Guide: Generating a dynamic textbox on click event without needing to reload the page

Morgan middleware in Express.js specifically targeting unsuccessful requests for logging purposes

Tips for extracting the index of the chosen item from a dropdown using ReactJs and Material UI

AngularJS tutorial for beginners: Troubleshooting a simple 'Hello, world' program

What is the best way to categorize array items based on a specific TypeScript type?

How does the single-threaded nature of Node.js handle an abundance of concurrent requests?

How can I transfer this JavaScript object from jQuery to PHP?

Achieving ngShow functionality by manipulating boolean values