使用momentjs更改Angular Material中md-datepicker的格式

Question

角材料介绍找到了一个新的日期选取器组件在这里.

我希望此组件返回的日期格式为yyy-mm-dd,但我不确定这是如何完成的.通过搜索我发现$mdDateLocaleProvider可以使用,但我找不到使用它的例子.

有人能告诉我一个格式化返回日期的工作示例md-datepicker吗？

Answer 1

$mdDateLocaleProviderAngular Material文档中有一个文档.

angular.module('app').config(function($mdDateLocaleProvider) {
    $mdDateLocaleProvider.formatDate = function(date) {
       return moment(date).format('YYYY-MM-DD');
    };
});

如果您不使用moment.js,请将内部代码替换formatDate为您希望用于格式化日期的任何内容.

这是一个基于Angular Material docs样本的CodePen示例.

Answer 2

还要解决kazuar指出的问题:

不幸的是,如果从键盘输入日期,它就不起作用

你也应该定义parseDate方法.来自文档:

$mdDateLocaleProvider.parseDate = function(dateString) {
    var m = moment(dateString, 'L', true);
    return m.isValid() ? m.toDate() : new Date(NaN);
};

有一个完整的例子,我在我的应用程序中(使用时刻):

$mdDateLocaleProvider.formatDate = function(date) {
    return moment(date).format('DD/MM/YYYY');
};

$mdDateLocaleProvider.parseDate = function(dateString) {
    var m = moment(dateString, 'DD/MM/YYYY', true);
    return m.isValid() ? m.toDate() : new Date(NaN);
};

问候

Answer 3

对于那些不使用Moment.js的人,可以格式化为字符串:

.config(function($mdDateLocaleProvider) {
  $mdDateLocaleProvider.formatDate = function(date) {

    var day = date.getDate();
    var monthIndex = date.getMonth();
    var year = date.getFullYear();

    return day + '/' + (monthIndex + 1) + '/' + year;

  };
});

Answer 4

从keyborard输入日期并在启动时返回null以避免在md-datapicker指令中按下"无效日期"时工作得很好:

$mdDateLocaleProvider.formatDate = function(date) {
  return date ? moment(date).format('DD/MM/YYYY') : null;
};

$mdDateLocaleProvider.parseDate = function(dateString) {
  var m = moment(dateString, 'DD/MM/YYYY', true);
  return m.isValid() ? m.toDate() : new Date(NaN);
};

Answer 5

-- 当我们在 md-dialog 中使用 md-DatePicker 时， $mdDateLocaleProvider 服务不会按照我们的需要格式化日期。我们必须在 md-dialog 的控制器中使用 $mdDateLocale 来格式化 md-DatePicker 的日期。例如 -

angular.module('MyApp').controller('AppCtrl', function($scope, $mdDateLocale) {

  $mdDateLocale.formatDate = function(date) {
    return moment(date).format('YYYY-MM-DD');
  };

  $scope.myDate = new Date('2015-10-15');

  $scope.minDate = new Date();

  $scope.maxDate = new Date();
});

Answer 6

使用AngularJS 1.5.9和时刻2.17.1,可以在运行时更改日期格式,月份名称和周名称.

首先配置初始语言.(在此示例中,angular-translate/$ translateProvider的配置是可选的.)

angular.module('app').config(configureLocalization)

configureLocalization.$inject = ['$translateProvider', '$mdDateLocaleProvider', 'localdb', '__config'];
function configureLocalization($translateProvider, $mdDateLocaleProvider, localdb, __config) {
  // Configure angular-translate
  $translateProvider.useStaticFilesLoader({
      prefix: 'locale/',
      suffix: '.json'
  });
  // get the language from local storage using a helper 
  var language = localdb.get('language');
  if (!language || language === 'undefined') {
    localdb.set('language', (language = __config.app.defaultLanguage));
  }
  // Set the preferredLanguage in angular-translate
  $translateProvider.preferredLanguage(language);

  // Change moment's locale so the 'L'-format is adjusted.
  // For example the 'L'-format is DD.MM.YYYY for German
  moment.locale(language);

  // Set month and week names for the general $mdDateLocale service
  var localeData = moment.localeData();
  $mdDateLocaleProvider.months      = localeData._months;
  $mdDateLocaleProvider.shortMonths = moment.monthsShort();
  $mdDateLocaleProvider.days        = localeData._weekdays;
  $mdDateLocaleProvider.shortDays   = localeData._weekdaysMin;
  // Optionaly let the week start on the day as defined by moment's locale data
  $mdDateLocaleProvider.firstDayOfWeek = localeData._week.dow;

  // Format and parse dates based on moment's 'L'-format
  // 'L'-format may later be changed
  $mdDateLocaleProvider.parseDate = function(dateString) {
    var m = moment(dateString, 'L', true);
    return m.isValid() ? m.toDate() : new Date(NaN);
  };

  $mdDateLocaleProvider.formatDate = function(date) {
    var m = moment(date);
    return m.isValid() ? m.format('L') : '';
  };
}

稍后您可能有一些基本控制器监视语言变量,当用户选择另一种语言时,该变量会被更改.

angular.module('app').controller('BaseCtrl', Base);

Base.$inject = ['$scope', '$translate', 'localdb', '$mdDateLocale'];
function Base($scope, $translate, localdb, $mdDateLocale) {

  var vm = this;
  vm.language = $translate.use();

  $scope.$watch('BaseCtrl.language', function(newValue, oldValue) {
    // Set the new language in local storage
    localdb.set('language', newValue);
    $translate.use(newValue);

    // Change moment's locale so the 'L'-format is adjusted.
    // For example the 'L'-format is DD-MM-YYYY for Dutch
    moment.locale(newValue);

    // Set month and week names for the general $mdDateLocale service
    var localeDate = moment.localeData();
    $mdDateLocale.months      = localeDate._months;
    $mdDateLocale.shortMonths = moment.monthsShort();
    $mdDateLocale.days        = localeDate._weekdays;
    $mdDateLocale.shortDays   = localeDate._weekdaysMin;
    // Optionaly let the week start on the day as defined by moment's locale data
    $mdDateLocale.firstDayOfWeek = localeData._week.dow;
  });
}

请注意我们不需要更改$mdDateLocale.formatDate和$mdDateLocale.parseDate方法,因为它们已经配置为使用通过调用更改的'L'格式moment.locale(newValue).

有关更多区域设置自定义的信息,请参阅$ mdDateLocaleProvider的文档:https://material.angularjs.org/latest/api/service/ $ mdDateLocaleProvider

额外:这是语言选择器的外观:

<md-select ng-model="BaseCtrl.language" class="md-no-underline">
  <md-option
    ng-repeat="language in ['en', 'de', 'fr', 'nl']"
    ng-value ="language"
  ><span
    class    ="flag-icon flag-icon-{{language ==='en' ? 'gb' : language}}"
  ></span>
  </md-option>
</md-select>