javascript - 在 Angular Grid 上批量编辑

Question

我为 payment received 属性处理row level edition 的方式如下所示:

   <tr ng-repeat="item in Event.ParticipantPledges">
    <div>
        <span ng-if="item.Id != Event.ParticipantPledge.Id">{{item.PaymentReceived | currency}}</span>
        <input type="number" ng-if="item.Id == Event.ParticipantPledge.Id" name="paymentReceived" ng-model="Event.ParticipantPledge.PaymentReceived" required />
    </div>
   </tr>

我有一个如上所示的网格。我知道如何编辑如上所示的行级别。但我的问题是如何一次对所有行执行此操作。换句话说，批量编辑。我可以给一个按钮 Edit All 然后用户可以编辑任何行，之后他可以更新记录。但是当我提供这样的功能时，如果用户更改了一个项目的值，那么它适用于该项目的所有行。我知道这是由于 2 方式数据绑定(bind)性质而发生的。但是你能告诉我如何避免这种情况吗？提前致谢。

注意:简单的例子就足够了。

Answer 1

我用过很棒的Angular-xeditable指令。

使用它:JSFiddle

HTML:

<form editable-form name="tableform" onaftersave="saveTable()" oncancel="cancel()">

    <!-- table -->
    <table class="table table-bordered table-hover table-condensed">
      <tr style="font-weight: bold">
        <td style="width:40%">Name</td>
        <td style="width:30%">Status</td>
        <td style="width:30%">Group</td>
        <td style="width:30%"><span ng-show="tableform.$visible">Action</span></td>
      </tr>
      <tr ng-repeat="user in users | filter:filterUser">
        <td>
          <!-- editable username (text with validation) -->
          <span editable-text="user.name" e-form="tableform" onbeforesave="checkName($data, user.id)">
            {{ user.name || 'empty' }}
          </span>
        </td>
        <td>
          <!-- editable status (select-local) -->
          <span editable-select="user.status" e-form="tableform" e-ng-options="s.value as s.text for s in statuses">
            {{ showStatus(user) }}
          </span>
        </td>
        <td>
          <!-- editable group (select-remote) -->
          <span editable-select="user.group" e-form="tableform" onshow="loadGroups()" e-ng-options="g.id as g.text for g in groups">
            {{ showGroup(user) }}
          </span>
        </td>
        <td><button type="button" ng-show="tableform.$visible" ng-click="deleteUser(user.id)" class="btn btn-danger pull-right">Del</button></td>
      </tr>
    </table>

    <!-- buttons -->
    <div class="btn-edit">
      <button type="button" class="btn btn-default" ng-show="!tableform.$visible" ng-click="tableform.$show()">
        edit
      </button>
    </div>
    <div class="btn-form" ng-show="tableform.$visible">
      <button type="button" ng-disabled="tableform.$waiting" ng-click="addUser()" class="btn btn-default pull-right">add row</button>
      <button type="submit" ng-disabled="tableform.$waiting" class="btn btn-primary">save</button>
      <button type="button" ng-disabled="tableform.$waiting" ng-click="tableform.$cancel()" class="btn btn-default">cancel</button>
    </div> 

  </form>
</div>

JS:

app.controller('EditableTableCtrl', function($scope, $filter, $http, $q) {
  $scope.users = [
    {id: 1, name: 'awesome user1', status: 2, group: 4, groupName: 'admin'},
    {id: 2, name: 'awesome user2', status: undefined, group: 3, groupName: 'vip'},
    {id: 3, name: 'awesome user3', status: 2, group: null}
  ]; 

  $scope.statuses = [
    {value: 1, text: 'status1'},
    {value: 2, text: 'status2'},
    {value: 3, text: 'status3'},
    {value: 4, text: 'status4'}
  ]; 

  $scope.groups = [];
  $scope.loadGroups = function() {
    return $scope.groups.length ? null : $http.get('/groups').success(function(data) {
      $scope.groups = data;
    });
  };

  $scope.showGroup = function(user) {
    if(user.group && $scope.groups.length) {
      var selected = $filter('filter')($scope.groups, {id: user.group});
      return selected.length ? selected[0].text : 'Not set';
    } else {
      return user.groupName || 'Not set';
    }
  };

  $scope.showStatus = function(user) {
    var selected = [];
    if(user.status) {
      selected = $filter('filter')($scope.statuses, {value: user.status});
    }
    return selected.length ? selected[0].text : 'Not set';
  };

  $scope.checkName = function(data, id) {
    if (id === 2 && data !== 'awesome') {
      return "Username 2 should be `awesome`";
    }
  };

  // filter users to show
  $scope.filterUser = function(user) {
    return user.isDeleted !== true;
  };

  // mark user as deleted
  $scope.deleteUser = function(id) {
    var filtered = $filter('filter')($scope.users, {id: id});
    if (filtered.length) {
      filtered[0].isDeleted = true;
    }
  };

  // add user
  $scope.addUser = function() {
    $scope.users.push({
      id: $scope.users.length+1,
      name: '',
      status: null,
      group: null,
      isNew: true
    });
  };

  // cancel all changes
  $scope.cancel = function() {
    for (var i = $scope.users.length; i--;) {
      var user = $scope.users[i];    
      // undelete
      if (user.isDeleted) {
        delete user.isDeleted;
      }
      // remove new 
      if (user.isNew) {
        $scope.users.splice(i, 1);
      }      
    };
  };

  // save edits
  $scope.saveTable = function() {
    var results = [];
    for (var i = $scope.users.length; i--;) {
      var user = $scope.users[i];
      // actually delete user
      if (user.isDeleted) {
        $scope.users.splice(i, 1);
      }
      // mark as not new 
      if (user.isNew) {
        user.isNew = false;
      }

      // send on server
      results.push($http.post('/saveUser', user));      
    }

    return $q.all(results);
  };
});