public class EventItem
{
public int Id { get; set; }
public int? ParentId { get; set; }
public virtual EventItem Parent { get; set; }
public virtual EventItem Alternative { get; set; }
} public class EventItemConfiguration : IEntityTypeConfiguration<EventItem>
{
public void Configure(EntityTypeBuilder<EventItem> builder)
{
builder.HasIndex(e => e.ParentId);
builder.HasOne(e => e.Parent)
.WithOne(e => e.Alternative)
.HasForeignKey<EventItem>(e => e.ParentId);
}
} One rule to rule them all, one rule to find them, one rule to bring them all, and in the darkness, name them.
Singleton design pattern is one of the simplest design patterns: it involves only one class throughout the application which is responsible to instantiate itself, to make sure it creates not more than one instance; in the same time it provides a global point of access to that instance. In this case the same instance can be used from everywhere, being impossible to invoke directly the constructor each time.
Just-in-time (JIT in PostgreSQL) compilation of SQL statements is one of the highlighted features in PostgreSQL 11. There is great excitement in the community because of the many claims of up to a 30% jump in performance.
var myFirstRoute = angular.module('myFirstRoute', []);
myFirstRoute.config(['$routeProvider',
function($routeProvider) {
$routeProvider.
when('/pageOne', {
templateUrl: 'templates/page_one.html',
controller: 'ShowPage1Controller'
}).
when('/pageTwo', {
templateUrl: 'templates/page_two.html',
controller: 'ShowPage2Controller'
}).
otherwise({
redirectTo: '/pageOne'
});
}]);
myFirstRoute.controller('ShowPage1Controller', function($scope) {
$scope.message = 'Content of page-one.html';
});
myFirstRoute.controller('ShowPage2Controller', function($scope) {
$scope.message = 'Content of page-two.html';
}); var myFirstRoute = angular.module('myFirstRoute',['ngRoute']);
myFirstRoute.config(['$routeProvider',
function($routeProvider) {
$routeProvider.
when('/pageOne', {
templateUrl: 'templates/page_one.html',
controller: 'ShowPage1Controller'
}).
when('/pageTwo', {
templateUrl: 'templates/page_two.html',
controller: 'ShowPage2Controller'
}).
otherwise({
redirectTo: '/pageOne'
});
}]); <body ng-app="app">
<div>
<div>
<div>
<ul>
<li><a href="#pageOne"> Show page one </a></li>
<li><a href="#pageTwo"> Show page two </a></li>
</ul>
</div>
<div>
<div ng-view></div>
</div>
</div>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
<script src="angular-route.js"></script>
<script src="app.js"></script>
</body> 
// Restangular returns promises
Restangular.all('users').getList() // GET: /users
.then(function(users) {
// returns a list of users
$scope.user = users[0]; // first Restangular obj in list: { id: 123 }
})
// Later in the code...
// Restangular objects are self-aware and know how to make their own RESTful requests
$scope.user.getList('cars'); // GET: /users/123/cars
// You can also use your own custom methods on Restangular objects
$scope.user.sendMessage(); // POST: /users/123/sendMessage
// Chain methods together to easily build complex requests
$scope.user.one('messages', 123).one('from', 123).getList('unread');
// GET: /users/123/messages/123/from/123/unread // Add Restangular as a dependency to your app
angular.module('your-app', ['restangular']);
// Inject Restangular into your controller
angular.module('your-app').controller('MainCtrl', function($scope, Restangular) {
// ...
}); | نام متد | پارامتر‌های ارسالی | توضیحات |
one | route, id | این متد یک RestAngular object ایجاد میکند که از آدرسی که در route قرار داده شده با id مشخص دریافت میشود. |
all | route | این متد یک RestAngular object که لیستی از المنت هایی را که در آدرس route قرار دارد، دریافت می‌نماید. |
oneUrl | route, url | این متد یک RestAngular object ایجاد میکند که یک المنت از url خاصی را بازگشت میدهد. مانند: Restangular.oneUrl( 'googlers' , 'http://www.google.com/1' ).get(); |
allUrl | route, url | این متد مانند متد قبل است با این تفاوت که یک مجموعه را بازگشت میدهد. |
copy | formElement | این متد یک کپی از المنت‌های یک فرم را ایجاد میکند که ما میتوانیم آنها را تغییر دهیم. |
restangularizeElement | parent,element, route, queryParams | یک المنت جدید را به صورت Restangularize تغییر میدهد. |
restangularizeCollection | parent, element, route, queryParams | یک کالکشن Collection را به صورت Restangularize تغییر میدهد. |
Flavors of .NET
A quick reference for the sometimes-confusing differences in .NET nomenclature
A Practical Approach Through a Console Application
