动态更改gridOptions columnDefs

Question

在下面的plunkr中，我希望Ajax调用可以动态填充Gender下拉过滤器，但是它似乎不起作用。

plunkr链接

如果我注释掉第17行

$scope.newSelectOptions=[{"value":"New Item 1","label":"New Item 1"},{"value":"New Item 2","label":"New Item 2"},{"value":"New Item 3","label":"New Item 3"},{"value":"New Item 4","label":"New Item 4"}];

它的工作方式就像我想要的（只是模拟它一样），但是似乎发生的是ajax调用在创建变量$scope.newSelectOptions后填充了变量columnDefs。

我尝试过更改第34行：

selectOptions: $scope.newSelectOptions

至：

selectOptions: newSelectOptions
selectOptions: 'newSelectOptions'
selectOptions: '$scope.newSelectOptions'

但它们都不起作用。

那么如何动态地动态更改该selectOptions对象或其他对象$scope.gridOptions.columnDefs？

Answer 1

您可以将“性别”列定义移至其自己的js参考，如下所示，

var genderColumn =  { field: 'gender', filter: { 
          term: '1', 
          type: uiGridConstants.filter.SELECT, 
          //selectOptions: [ { value: '1', label: 'male' }, { value: '2', label: 'female' }, { value: '3', label: 'unknown'}, { value: '4', label: 'not stated' }, { value: '5', label: 'a really long value that extends things' } ]
          selectOptions: []
        }, 
        cellFilter: 'mapGender', headerCellClass: $scope.highlightFilteredHeader };

并像下面这样在columnDef中分配它

columnDefs: [
      // default
      { field: 'name', headerCellClass: $scope.highlightFilteredHeader },
      // pre-populated search field
      genderColumn,                               
      // no filter input
      { field: 'company', enableFiltering: false, filter: {
        noTerm: true,
        condition: function(searchTerm, cellValue) {
          return cellValue.match(/a/);
        }
      }},
      // specifies one of the built-in conditions
      // and a placeholder for the input
      {
        field: 'email',
        filter: {
          condition: uiGridConstants.filter.ENDS_WITH,
          placeholder: 'ends with'
        }, headerCellClass: $scope.highlightFilteredHeader
      },
      // custom condition function
      {
        field: 'phone',
        filter: {
          condition: function(searchTerm, cellValue) {
            var strippedValue = (cellValue + '').replace(/[^\d]/g, '');
            return strippedValue.indexOf(searchTerm) >= 0;
          }
        }, headerCellClass: $scope.highlightFilteredHeader
      },
      // multiple filters
      { field: 'age', filters: [
        {
          condition: uiGridConstants.filter.GREATER_THAN,
          placeholder: 'greater than'
        },
        {
          condition: uiGridConstants.filter.LESS_THAN,
          placeholder: 'less than'
        }
      ], headerCellClass: $scope.highlightFilteredHeader},
      // date filter
      { field: 'mixedDate', cellFilter: 'date', width: '15%', filter: {
          condition: uiGridConstants.filter.LESS_THAN,
          placeholder: 'less than',
          term: nextWeek
        }, headerCellClass: $scope.highlightFilteredHeader
      }
    ]

并在ajax响应中，当您具有新的选择选项时，在“性别”列上进行设置，如下所示。

genderColumn.filter.selectOptions = [{"value":"New Item 1","label":"New Item 1"},{"value":"New Item 2","label":"New Item 2"},{"value":"New Item 3","label":"New Item 3"},{"value":"New Item 4","label":"New Item 4"}];

http://plnkr.co/edit/2Rbhz4XMSuhjvnO2IrR7?p=preview