<input name="pickerFromDate" date-time ng-model="model[options.key]" id="pickerFromDate" min-view="month" class="edb-input input-group-input"
 placeholder="{{to.placeholder}}" max-date="maxDate" date-change="changeMinValue" format="MMM DD, YYYY" validation="required"
 watch-direct-changes="true" />

<button type="button" class="btn btn-default" ng-click="setFocus($event);">
    <i class="fa fa-calendar"></i>
</button>

$scope.setFocus = function(data) {
    let input = $(data.target).closest('.cv-form-section').find('input');
    input.click();
};

Error: [$rootScope:inprog] $apply already in progress

$scope.setFocus = function(data) {
    let input = $(data.target).closest('.cv-form-section').find('input');
    $timeout(function(){
      input.click();
    })
};