Tips on reducing the number of "$routeProvider.when" statements in a complex application

Is there a more efficient way to handle routing in AngularJS, specifically for loading html templates based on $location.path? My current approach involves a long list of "Whens" that will become unmanageable as my application grows.

 .config(['$routeProvider',
 function ($routeProvider) {
  $routeProvider.
      //Home
      //User/Tenant/Register
   when('/register', { templateUrl: 'pages/Auth/register.html' }).
   when('/login', { templateUrl: 'pages/Auth/login.html' }).
      //User
   when('/user', { templateUrl: 'pages/User/list.html' }).
   when('/user/new', { templateUrl: 'pages/User/new.html' }).
   when('/user/:userId', { templateUrl: 'pages/User/detail.html' }).
   when('/user/edit/:userId', { templateUrl: 'pages/User/new.html' }).
         //Role
   when('/role', { templateUrl: 'pages/Role/list.html' }).
   when('/role/new', { templateUrl: 'pages/Role/new.html' }).
   when('/role/:roleId', { templateUrl: 'pages/Role/detail.html' }).
   when('/role/edit/:roleId', { templateUrl: 'pages/Role/new.html' }).
   when('/roleassign', { templateUrl: 'pages/Role/assign.html' }).
   when('/roledefine', { templateUrl: 'pages/Role/define.html' }).
        //Permissions
   when('/permission', { templateUrl: 'pages/Permission/list.html' }).
   when('/permission/new', { templateUrl: 'pages/Permission/new.html' }).
   when('/permission/:permissionId', { templateUrl: 'pages/Permission/detail.html' }).
   when('/permission/edit/:permissionId', { templateUrl: 'pages/Permission/new.html' }).
   when('/permissionassign', { templateUrl: 'pages/Permission/assign.html' }).
      //Counter
   when('/X', { templateUrl: 'pages/Counter/list.html' }).
   when('/X/new', { templateUrl: 'pages/Counter/new.html' }).
   when('/X/:counterId', { templateUrl: 'pages/Counter/detail.html' }).
   when('/X/edit/:counterId', { templateUrl: 'pages/Counter/new.html' }).
      //Company
   when('/Y', { templateUrl: 'pages/Y/list.html' }).
   when('/Y/new', { templateUrl: 'pages/Y/new.html' }).
   when('/Y/:companyId', { templateUrl: 'pages/Y/detail.html' }).
   when('/Y/edit/:companyId', { templateUrl: 'pages/Y/new.html' }).
      //Product
   when('/Z', { templateUrl: 'pages/Z/list.html' }).
   when('/Z/new', { templateUrl: 'pages/Z/new.html' }).
   when('/Z/:productId', { templateUrl: 'pages/Z/detail.html' }).
   when('/Z/edit/:productId', { templateUrl: 'pages/Z/new.html' }).
   otherwise({
       redirectTo: '/index',
       templateUrl: 'pages/dashboard.html'
   });
  //$locationProvider.html5Mode(true);
  }])

Answer №1

Optimizing Config Scripts

If managing a single configuration is becoming cumbersome, consider splitting it into multiple config scripts. This way, you can handle each group separately, making maintenance more efficient and manageable. It appears that your application organizes functionality groups using folders. Similarly, you can organize config script files within their respective groups for better organization.

DRY Code Refactoring

Your code contains repetitive blocks with common conventions that could be consolidated to avoid duplication. By refactoring these sections, you can streamline the execution of similar code segments without duplicating them excessively.

angular.foreach([
        "user",
        "permission",
        "role",
        "X",
        "Y",
        ...
    ], function(value) {
    $routeProvider
        .when("/" + value, { templateUrl: "pages/" + value + "/list.html" })
        .when("/" + value + "/new", { ... })
        .when("/" + value + "/:" + value + "Id", { ... }),
        .when("/" + value + "/edit/:" + value + "Id", { ... })
});

To simplify string concatenation, consider implementing a string.prototype.format function in JavaScript. This will enhance readability and maintainability of your code as shown below:

String.prototype.format = String.prototype.format || function () {
    ///<summary>Replaces placeholders in string with provided parameters.</summary>

    "use strict";

    var args = arguments;

    return this.replace(/{(\d+)}/g, function (match, index) {
        return typeof (args[index]) != "undefined" ? args[+index] : "";
    });
};

Answer №2

In my previous project, I opted for using uiRouter over ngRoute. I successfully implemented a similar solution in CoffeeScript:

angular.module('myApp')
.config ($stateProvider) ->

    $stateProvider
    .state 'main.page',
    url: '/page/{staticName:[a-z0-9_]*}'
    templateUrl: (stateParams) ->
        '/views/page/' + stateParams.staticName + '.html'
    controller: 'PageCtrl'

I wonder if the same approach can be applied to ngRouter as well?...

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