Using AngularJS $resource as a "service" with flexible base URL

Question

Using AngularJS $resource as a "service" with flexible base URL

A custom JS library based on Angular includes various services for clients, structured like so:

angular.module('Services', [
    'ngResource'
]).factory('UserService', function($resource) {
    return function(whatsonUserId) {
        return $resource('/rest/user/:action');
    }
}. factory ...

Clients can easily incorporate the library by doing the following:

app.controller('Ctrl', function(UserService) {
    ...
    UserService().doSomething()
}

However, since clients host their HTML on their own URLs, the root URL for MY services is incorrect. To address this, an absolute URL must be supplied to $resource:

return $resource('www.my.server.url/rest/user/:action');

But there are multiple server URLs - staging, development, production environments - some specific to each client.

The query at hand: Is it feasible to implement a generic 'service' where users of the library can define the 'server root' for 'Services'?

javascript angularjs resources

Answer 1

Answer №1

Utilizing the provider API presents a practical use case. By employing the module.provider, you have the ability to define your own API. This can be achieved by creating a provider for configuring your server, as demonstrated below:

module.provider('serverConfig',function() {
    var serverUrl='val';     //default url
    this.setServerUrl=function(url) {
       serverUrl=url;
    };
    this.$get=[function(){
       return {url:serverUrl};
    }];
})

After establishing your configuration service, it can be integrated into any individual services that may require it. A sample implementation is shown in the following code snippet:

factory('UserService', function($resource,serverConfig) {
    return function(whatsonUserId) {
        return $resource(serverConfig.url+'/rest/user/:action');
    }

The provider setup must occur during the configuration stage of your application, similar to how it's done below:

myApp.config(["serverConfigProvider", function(serverConfigProvider) {
  serverConfigProvider.setServerUrl('serverUrlstring');
}]);

Answer 2

Utilizing the provider API presents a practical use case. By employing the module.provider, you have the ability to define your own API. This can be achieved by creating a provider for configuring your server, as demonstrated below:

module.provider('serverConfig',function() {
    var serverUrl='val';     //default url
    this.setServerUrl=function(url) {
       serverUrl=url;
    };
    this.$get=[function(){
       return {url:serverUrl};
    }];
})

After establishing your configuration service, it can be integrated into any individual services that may require it. A sample implementation is shown in the following code snippet:

factory('UserService', function($resource,serverConfig) {
    return function(whatsonUserId) {
        return $resource(serverConfig.url+'/rest/user/:action');
    }

The provider setup must occur during the configuration stage of your application, similar to how it's done below:

myApp.config(["serverConfigProvider", function(serverConfigProvider) {
  serverConfigProvider.setServerUrl('serverUrlstring');
}]);

Answer 3

Answer №2

In newer versions of AngularJS, such as 1.4.3, the code snippet below demonstrates how to create a UserService factory that can handle different subdomains:

.factory('UserService', function($resource) {
  // Default subdomain is set to 'www'
  return $resource("http://:subdomain.my.server.url/rest/user", {subdomain: 'www'});
})

With this setup, users have the flexibility to call the service with a specific subdomain or without one:

UserService.query({subdomain: 'user001'}).$promise.then(
// => http://user001.my.server.url/rest/user

or

UserService.query().$promise.then(
// => http://www.my.server.url/rest/user

This approach allows for static or dynamic subdomains, catering to various use cases.

Answer 4

In newer versions of AngularJS, such as 1.4.3, the code snippet below demonstrates how to create a UserService factory that can handle different subdomains:

.factory('UserService', function($resource) {
  // Default subdomain is set to 'www'
  return $resource("http://:subdomain.my.server.url/rest/user", {subdomain: 'www'});
})

With this setup, users have the flexibility to call the service with a specific subdomain or without one:

UserService.query({subdomain: 'user001'}).$promise.then(
// => http://user001.my.server.url/rest/user

or

UserService.query().$promise.then(
// => http://www.my.server.url/rest/user

This approach allows for static or dynamic subdomains, catering to various use cases.

Using AngularJS $resource as a "service" with flexible base URL

Answer №1

Answer №2

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