updating specific values for each key in angularjs

Question

updating specific values for each key in angularjs

Whenever I click on a particular value, I want to be able to edit only that specific value. However, the issue is that when I try to do so, it ends up editing all the values in that row instead of just the one I clicked on. Here is the code snippet:

<table>

<tbody ng-repeat="(key,value) in row.entity.subData"><tr ng-repeat="item in value" >
<td   >
  <span ng-hide="row.entity.editing(item)" ng-click="row.entity.editItem(item)">{{item}}</span>
<button ng-show="row.entity.editing(item)">save</button>
  </td>
</tr></tbody></table>

In my JavaScript code, I have the following function:

row.entity.editItem = function (item) {
    row.entity.editing=function (item) {
        return true; 
    }
}

The problem is that clicking on any value turns all values into buttons, not just the one that was clicked.

javascript arrays angularjs

Answer 1

Answer №1

Looking at the code you provided, it seems like you have an object called row.entity.subData, which contains arrays of items.

It appears that your intention is to have a single click impact either a specific cell (item) or row (subData).

However, currently, when you click on a cell, the key "row.entity.editing" is changed to true. This causes all items in your ng-repeat to be affected by the click as there is only one reference to this variable.

To address this issue, you should modify a variable within each individual row.entity.subData[key], rather than applying changes to row.entity.* as a whole.

To resolve this problem, I suggest restructuring your data. You can nest objects inside an array with two values:

row.entity.subData = [{  isShown:true,  data: [...] }, ...]

The data key should contain the original values from your initial array.

The isShown key will determine the ng-if condition.

<table>
  <tbody ng-repeat="object in row.entity.subData">
  
    <!-- If you are hiding the entire row based on a click, the logic should be implemented at the row level -->
    <!-- Depending on the size of your dataset, using ng-if in a table is recommended -->
    
    <tr ng-if="object.isShown" 
        ng-click="object.isShown = !object.isShown" 
        ng-repeat="item in object.data" >
      <td >
        <span>
             {{item}}
        </span>
      <!-- Regarding the save button functionality, please clarify whether it should affect the cell or the row after clicking -->
          <button ng-show="object.isShown" ng-click="save(object)">
              save
          </button>
        </td>
    </tr>
  </tbody>
</table>

Answer 2

Looking at the code you provided, it seems like you have an object called row.entity.subData, which contains arrays of items.

It appears that your intention is to have a single click impact either a specific cell (item) or row (subData).

However, currently, when you click on a cell, the key "row.entity.editing" is changed to true. This causes all items in your ng-repeat to be affected by the click as there is only one reference to this variable.

To address this issue, you should modify a variable within each individual row.entity.subData[key], rather than applying changes to row.entity.* as a whole.

To resolve this problem, I suggest restructuring your data. You can nest objects inside an array with two values:

row.entity.subData = [{  isShown:true,  data: [...] }, ...]

The data key should contain the original values from your initial array.

The isShown key will determine the ng-if condition.

<table>
  <tbody ng-repeat="object in row.entity.subData">
  
    <!-- If you are hiding the entire row based on a click, the logic should be implemented at the row level -->
    <!-- Depending on the size of your dataset, using ng-if in a table is recommended -->
    
    <tr ng-if="object.isShown" 
        ng-click="object.isShown = !object.isShown" 
        ng-repeat="item in object.data" >
      <td >
        <span>
             {{item}}
        </span>
      <!-- Regarding the save button functionality, please clarify whether it should affect the cell or the row after clicking -->
          <button ng-show="object.isShown" ng-click="save(object)">
              save
          </button>
        </td>
    </tr>
  </tbody>
</table>

Answer 3

Answer №2

If you want to show or hide a specific item in an ng-repeat, I recommend structuring your data object like this:

angular.forEach(data, function(value){
     value.isVisible = false;
};

After that, you can easily show or hide the button for the item you wish to edit by toggling the value of isVisible as needed.

<table>
    <tbody><tr ng-repeat="item in data" >
    <td>
      <span ng-hide="!item.isVisible" ng-click="row.editItem(item)">{{item}}</span>
    <button ng-show="item.isVisible">save</button>
      </td>
    </tr></tbody></table>

I hope this explanation was useful. Best of luck with your project! :)

Answer 4

If you want to show or hide a specific item in an ng-repeat, I recommend structuring your data object like this:

angular.forEach(data, function(value){
     value.isVisible = false;
};

After that, you can easily show or hide the button for the item you wish to edit by toggling the value of isVisible as needed.

<table>
    <tbody><tr ng-repeat="item in data" >
    <td>
      <span ng-hide="!item.isVisible" ng-click="row.editItem(item)">{{item}}</span>
    <button ng-show="item.isVisible">save</button>
      </td>
    </tr></tbody></table>

I hope this explanation was useful. Best of luck with your project! :)

Answer 5

Answer №3

In my quest to find a solution for this issue, I came across the following code snippet:

function myCtrl($scope) {

  
   $scope.items = [{
        name: "item #1",
        id:4
        
    }
    ];

    $scope.editItem = function (value,$index) {
         if($index==0){
         $scope.editing =function ($index) {
       if($index==0){
       return true;
       }
        }
        $scope.backup = angular.copy(value);
         }
         if($index==1){
         $scope.editing =function ($index) {
       if($index==1){
       return true;
       }
        }
        $scope.backup = angular.copy(value);
         }
        
    }

    $scope.doneEditing = function (value,$index) {
    if($index==0){
         $scope.editing =function ($index) {
       if($index==0){
       return false;
       }
        }
        delete $scope.backup;
         }
         if($index==1){
         $scope.editing =function ($index) {
       if($index==1){
       return false;
       }
        }
        delete $scope.backup;
         }
       
    };
    $scope.Cancel = function (value,$index) {
     if($index==0){
         $scope.editing =function ($index) {
       if($index==0){
       return false;
       }
        }
        this.value = angular.copy($scope.backup);
        delete $scope.backup;
         }
         if($index==1){
         $scope.editing =function ($index) {
       if($index==1){
       return false;
       }
        }
         this.value = angular.copy($scope.backup);
        delete $scope.backup;         }
       
    };
  
}

.container {
    margin-top:10px;
    font-family:arial;
}
input:focus {
    //change more attributes, if you want.
}
input {
    border:none;
    background-color:transparent;
}
.container header {
    padding-bottom:20px;
    border-bottom:1px solid black;
}
ul, input, .container {
    padding:10px;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.1/angular.min.js"></script>
<!DOCTYPE html>
<div ng-app ng-controller="myCtrl" class="container">
        <table>
        <tr ng-repeat="(key,value) in items[0]">
           <td>{{key}} </td>
           <td>
                <span  ng-hide="editing($index)"  > {{value}} <button  ng-click="editItem(value,$index)">Edit</button></span>
                <input ng-show="editing($index)" ng-model="value"  autofocus />
                <button ng-show="editing($index)" ng-click="doneEditing(value,$index)">Save</button>
                 <button ng-show="editing($index)" ng-click="Cancel(value,$index)">Cancel</button>
            </td>
        </tr>
         
        </table>
   
</div>

Answer 6

In my quest to find a solution for this issue, I came across the following code snippet:

function myCtrl($scope) {

  
   $scope.items = [{
        name: "item #1",
        id:4
        
    }
    ];

    $scope.editItem = function (value,$index) {
         if($index==0){
         $scope.editing =function ($index) {
       if($index==0){
       return true;
       }
        }
        $scope.backup = angular.copy(value);
         }
         if($index==1){
         $scope.editing =function ($index) {
       if($index==1){
       return true;
       }
        }
        $scope.backup = angular.copy(value);
         }
        
    }

    $scope.doneEditing = function (value,$index) {
    if($index==0){
         $scope.editing =function ($index) {
       if($index==0){
       return false;
       }
        }
        delete $scope.backup;
         }
         if($index==1){
         $scope.editing =function ($index) {
       if($index==1){
       return false;
       }
        }
        delete $scope.backup;
         }
       
    };
    $scope.Cancel = function (value,$index) {
     if($index==0){
         $scope.editing =function ($index) {
       if($index==0){
       return false;
       }
        }
        this.value = angular.copy($scope.backup);
        delete $scope.backup;
         }
         if($index==1){
         $scope.editing =function ($index) {
       if($index==1){
       return false;
       }
        }
         this.value = angular.copy($scope.backup);
        delete $scope.backup;         }
       
    };
  
}

.container {
    margin-top:10px;
    font-family:arial;
}
input:focus {
    //change more attributes, if you want.
}
input {
    border:none;
    background-color:transparent;
}
.container header {
    padding-bottom:20px;
    border-bottom:1px solid black;
}
ul, input, .container {
    padding:10px;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.1/angular.min.js"></script>
<!DOCTYPE html>
<div ng-app ng-controller="myCtrl" class="container">
        <table>
        <tr ng-repeat="(key,value) in items[0]">
           <td>{{key}} </td>
           <td>
                <span  ng-hide="editing($index)"  > {{value}} <button  ng-click="editItem(value,$index)">Edit</button></span>
                <input ng-show="editing($index)" ng-model="value"  autofocus />
                <button ng-show="editing($index)" ng-click="doneEditing(value,$index)">Save</button>
                 <button ng-show="editing($index)" ng-click="Cancel(value,$index)">Cancel</button>
            </td>
        </tr>
         
        </table>
   
</div>

updating specific values for each key in angularjs

Answer №1

Answer №2

Answer №3

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