ng-repeat中的Angularjs显示和隐藏按钮

Question

I have a list which populates a screen using ng-repeat . Each row has a button for the user to click on to select the row. Typically what you would use a radio button for but the user wants a button toggle.

What I really want is to show the first button (hide the second on displaying the list first time) and after the user clicks on the first one to select a specific row, I want to hide the first button and show the second. The 2 button have different ids, text, style. So to the user, its like changing the look of the button after selection.

I tried setting the showfarebut1 / showfarebut2 scope variable in my function populateFareOption(row.col3.value, row.col4.value) in the controller, but all the rows had the second button after button one is clicked.

Any ideas or code snippet .. will be appreciated.

HTML

<tr ng-repeat="row in rowList">
    <td> {{row.col1.value}}</td>

    <td>
        <span class="price">PRICE:&nbsp;
            <strong class="amount">{{row.col2.value}}</strong>
        </span>

        <button id="btnXX1" ng-show="showfarebut1" type="button" class="btn pull-right" ng-click="populateFareOption(row.col3.value,row.col4.value)">

            <span class="text pull-left" name="fareOption" ng-model="travelCardForm.colOption" value="{{row.col3.value}}">Select</span>
            <i class="icon-placeholder"></i>
        </button> 

        <button id="btnXX2" ng-show="showfarebut2" type="button" class="btn pull-right">
            <span class="text pull-left">Selected</span>
            <i class="selected-icon pull-right"></i>
        </button>
    </td> 
</tr>

Controller

    $scope.showfarebut1=true;
    $scope.showfarebut2=false;

    $scope.populateFareOption = function(x,y){
         cardForm.fareOption.value=x;
         cardForm.productCode.value=y;
         $scope.showfarebut1=false;
         $scope.showfarebut2=true;
       }

Answer 1

In your example you have showfarebut1 and showfarebut2 shared across all the rows, that causes one button clicked affect all rows. You should use something bound to the current row: row.showfarebut1 and row.showfarebut2 .

However, there is a more efficient way to make toggle buttons. You can reuse the same button and set classes and text according to the state of the record. Here is a simple example:

HTML

<ul class="list-group" ng-controller="ctrl">
  <li class="list-group-item" ng-repeat="row in rowList">
    <span>{{row.col1.value}}</span>
    <span>{{row.col2.value}}</span>
    <button type="button" ng-click="row.selected=!row.selected" class="pull-right btn btn-xs">
      <span ng-class="{'glyphicon':true, 'glyphicon-ok':row.selected, 'glyphicon-plus':!row.selected}"></span>
      {{row.selected?'Selected':''}}
    </button>
  </li>
</ul>

You can use ng-class directive to toggle classes and condition like {{row.selected?'Selected':''}} to toggle text of the button.

JavaScript

angular.module('app', []).
  controller('ctrl', function($scope) {
    $scope.rowList = [{
      col1: { value: 'r1c1'},
      col2: {value: 'r1c2'}
    }, {
      col1: {value: 'r2c1'},
      col2: {value: 'r2c2'}
    }, {
      col1: {value: 'r3c1'},
      col2: {value: 'r3c2'}
    }];
  });

You even don't need some special function for selecting an item, you can do simple things directly in ng-click

Screenshot

Plunker: http://plnkr.co/edit/ZFRIWOe2HxMq8K11FBk4?p=preview

---

Edit (adapted version):

HTML

<table ng-controller="ctrl" class="table">
  <tr ng-repeat="row in rowList">
    <td>{{row.col1.value}}</td>
    <td>
      <span class="price">PRICE:&nbsp;
        <strong class="amount">{{row.col2.value}}</strong>
      </span>
      <button id="btn{{$index}}"  type="button" class="btn pull-right" ng-click="select(row)">
        <span class="text pull-left" name="fareOption" value="{{row.col3.value}}">{{row.selected?'Selected':'Select'}}</span>
        <i ng-class="{'icon-placeholder':!row.selected, 'selected-icon':row.selected, 'pull-right':row.selected}"></i>
      </button>
    </td> 
  </tr>
</table>

JavaScript

angular.module('app', []).
  controller('ctrl', function($scope) {
    $scope.rowList = [{
      col1: {value: 'Orange'},
      col2: {value: '10'},
      col3: {value: 'x1'},
      col4: {value: 'y1'}
    }, {
      col1: {value: 'Apple'},
      col2: {value: '20'},
      col3: {value: 'x2'},
      col4: {value: 'y2'}
    }, {
      col1: {value: 'Banana'},
      col2: {value: '15'},
      col3: {value: 'x3'},
      col4: {value: 'y3'}
    }];

    $scope.select = function(row) {
      row.selected=!row.selected;
      // Do something with row.col3.value and row.col4.value
    }
  });

Plunker: http://plnkr.co/edit/DdO1zBXxkyXWSLA6Gv2x?p=preview

Answer 2

Attach showfarebut2 to the object in rowList :

$scope.populateFareOption = function(row){
  cardForm.fareOption.value = row.col3.value;
  cardForm.productCode.value = row.col4.value;
  row.showFareBut2 = true;
}

And your HTML:

<button id="btnXX2" ng-show="row.showfarebut2" type="button" class="btn pull-right">