Open AngularUI Bootstrap Typeahead 通过控制器匹配结果 [英] Open AngularUI Bootstrap Typeahead Matches Results via Controller

问题描述

无论如何，是否可以触发在控制器的预输入文本框中打开匹配结果?

Is there anyway to trigger opening the match results on a typeahead input text box from the controller?

用例:

• 用户转到 https://example.com/search/searchText
• 页面控制器在初始化时将输入文本设置为searchText"(ng-model)
• 触发器显示来自控制器的预输入结果

我似乎只能在输入文本框中输入时获得预先输入的结果.

I can only seem to get the typeahead results, obviously, while typing in the input text box.

推荐答案

我让它以几种方式工作，但都需要对 ui-bootstrap 进行更改.我想我可以创建一个拉取请求，但不确定我的特定用例是否是常见用例.

I got it to work in a couple ways, but both require changes to ui-bootstrap. I suppose I could create a pull request but not sure if my particular use case is a common one.

1) 自定义指令并在输入元素的焦点上调用 UibTypeaheadController.scheduleSearchWithTimeout 方法.

1) Custom directive and calling UibTypeaheadController.scheduleSearchWithTimeout method on focus of input element.

指令:

.directive("showSearchResultsOnFocus", function($stateParams) {
return {
    require: ['uibTypeahead', 'ngModel'],
    link: function (scope, element, attr, ctrls) {
        var typeaheadCtrl = ctrls[0];
        var modelCtrl = ctrls[1];

        element.bind('focus', function () {
            if (!$stateParams.search || !modelCtrl.$viewValue) return;
            typeaheadCtrl.exportScheduleSearchWithTimeout(modelCtrl.$viewValue);
        });
    }
}

更新到 ui-bootstrap:

Update to ui-bootstrap:

this.exportScheduleSearchWithTimeout = function(inputValue) {
  return scheduleSearchWithTimeout(inputValue);
};

不好: 需要在控制器上公开方法.唯一可用的方法是 init 方法并且作用域是隔离的.不打算从外部控制器调用.

Bad: Requires making the method public on controller. Only method available is the init method and scope is isolated. Not meant to call from outside controller.

2) 添加新的 typeahead 属性以允许设置默认值并在焦点上显示结果:

2) Add new typeahead attribute to allow setting default value and show results on focus:

更新到 ui-bootstrap:

Update to ui-bootstrap:

var isAllowedDefaultOnFocus = originalScope.$eval(attrs.typeaheadAllowDefaultOnFocus) !== false;
originalScope.$watch(attrs.typeaheadAllowedDefaultOnFocus, function (newVal) {
  isAllowedDefaultOnFocus = newVal !== false;
});

element.bind('focus', function (evt) {
  hasFocus = true;
  // this was line before: if (minLength === 0 && !modelCtrl.$viewValue) {
  if ((minLength === 0 && !modelCtrl.$viewValue) || isAllowedDefaultOnFocus) {
    $timeout(function() {
      getMatchesAsync(modelCtrl.$viewValue, evt);
    }, 0);
  }
});

坏处: 向 ui-bootstrap 拉取请求，但更改可能不是常用功能.在此处提交 PR:https://github.com/angular-ui/bootstrap/pull/6353 不确定是否会合并，但在此之前使用 fork.

Bad: Pull Request to ui-bootstrap but change perhaps not a common use feature. Submitted a PR here: https://github.com/angular-ui/bootstrap/pull/6353 Not sure if will be merged or not but using fork until then.

还有其他建议吗?

版本角度:1.5.8，UIBS:2.2.0，引导:3.3.7

Versions Angular: 1.5.8, UIBS: 2.2.0, Bootstrap: 3.3.7

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