Materiale angolare - DatePicker
Il md-datepicker, una direttiva angolare, è un controllo di input per selezionare una data e supporta ngMessages per la convalida dell'input.
Attributi
La tabella seguente elenca i parametri e la descrizione dei diversi attributi di md-datepicker.
| Suor n | Parametro e descrizione | 
|---|---|
| 1 | * ng-model Il modello di questo componente prevede un oggetto Date JavaScript.  |  
      
| 2 | ng-change L'espressione valutata quando il valore del modello cambia.  |  
      
| 3 | md-min-date L'espressione che rappresenta una data minima (inclusa).  |  
      
| 4 | md-max-date L'espressione che rappresenta una data massima (inclusa).  |  
      
| 5 | md-date-filter La funzione prevede una data e restituisce un valore booleano e determina se può essere selezionata o meno.  |  
      
| 6 | md-placeholder Il valore segnaposto di input della data.  |  
      
| 7 | ng-disabled Questo determina se il datepicker è disabilitato.  |  
      
| 8 | ng-required Questo determina se è richiesto un valore per il datepicker.  |  
      
Esempio
L'esempio seguente mostra l'uso della direttiva md-datepicker e anche gli usi di datepicker.
am_datepicker.htm
<html lang = "en">
   <head>
      <link rel = "stylesheet"
         href = "https://ajax.googleapis.com/ajax/libs/angular_material/1.0.0/angular-material.min.css">
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-animate.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-aria.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-messages.min.js"></script>
      <script src = "https://ajax.googleapis.com/ajax/libs/angular_material/1.0.0/angular-material.min.js"></script>
      <style>
         .datepickerdemo md-content {
            padding-bottom: 200px; 
         }
         
        .datepickerdemo .validation-messages {
            font-size: 11px;
            color: darkred;
            margin: 10px 0 0 25px; 
         }
      </style>
      
      <script language = "javascript">
         angular
            .module('firstApplication', ['ngMaterial','ngMessages'])
            .controller('dateController', dateController);
         function dateController ($scope) {
            $scope.myDate = new Date();
            $scope.minDate = new Date(
               $scope.myDate.getFullYear(),
               $scope.myDate.getMonth() - 2,
               $scope.myDate.getDate());
               
            $scope.maxDate = new Date(
               $scope.myDate.getFullYear(),
               $scope.myDate.getMonth() + 2,
               $scope.myDate.getDate());
               
            $scope.onlyWeekendsPredicate = function(date) {
               var day = date.getDay();
               return day === 0 || day === 6;
            }
         }                 
      </script>    
   </head>
   
   <body ng-app = "firstApplication"> 
      <div class = "datepickerdemo" ng-controller = "dateController as ctrl"
         layout = "column" ng-cloak>
         <md-content>
            <h4>Standard Date Picker</h4>
            <md-datepicker 
               ng-model = "myDate" 
               md-placeholder = "Enter date"></md-datepicker>
               
            <h4>Disabled Date Picker</h4>
            <md-datepicker 
               ng-model = "myDate" 
               md-placeholder = "Enter date" 
               disabled></md-datepicker>
               
            <h4>Date-picker with min and max dates</h4>
            <md-datepicker 
               ng-model = "myDate" 
               md-placeholder = "Enter date"
               md-min-date = "minDate" 
               md-max-date = "maxDate"></md-datepicker>
               
            <h4>Date-picker with only selectable weekends</h4>
            <md-datepicker 
               ng-model = "myDate" 
               md-placeholder = "Enter date"
               md-date-filter = "onlyWeekendsPredicate"></md-datepicker>
               
            <h4>Date-picker with only selectable weekends in a range</h4>
            <md-datepicker 
               ng-model = "myDate" 
               md-placeholder = "Enter date"
               md-min-date = "minDate" 
               md-max-date = "maxDate"
               md-date-filter = "onlyWeekendsPredicate"></md-datepicker>
               
            <h4>Date-picker with validation mesages</h4>
            <form name = "myForm">
               <md-datepicker 
                  name = "dateField" 
                  ng-model = "myDate" 
                  md-placeholder = "Enter date"
                  required 
                  md-min-date = "minDate" 
                  md-max-date = "maxDate"
                  md-date-filter = "onlyWeekendsPredicate"></md-datepicker>
                  
               <div class = "validation-messages" ng-messages = "myForm.dateField.$error">
                  <div ng-message = "valid">The entered value is not a date!</div>
                  <div ng-message = "required">This date is required!</div>
                  <div ng-message = "mindate">Date is too early!</div>
                  <div ng-message = "maxdate">Date is too late!</div>
                  <div ng-message = "filtered">Only weekends are allowed!</div>
               </div>
            </form>
            
         </md-content>
      </div>
   </body>
</html> 
    Risultato
Verifica il risultato.
