Abstract: Learn how to reset the selected values in Ng-MultiSelect dropdown in Angular.
2024-06-08 by DevCodeF1 Editors
Ng-MultiSelectDropdown: Values Won't Reset Selected
In this article, we will discuss the issue of resetting the selected values in a Ng-MultiSelectDropdown component. This issue has been reported by developers working with Angular and the Ng-MultiSelectDropdown library. The problem occurs when trying to reset the selected values in the dropdown, and the previously selected values still appear. We will provide a detailed explanation of the problem and possible solutions.
Context
The Ng-MultiSelectDropdown is a popular Angular component that provides a multi-select dropdown list. It is used in various applications to allow users to select multiple options from a list. The component provides a simple and user-friendly interface for selecting multiple options. However, some developers have reported an issue with resetting the selected values in the dropdown.
Problem
The problem occurs when trying to reset the selected values in the Ng-MultiSelectDropdown component. The component provides a reset() method that is supposed to clear the selected values. However, in some cases, the previously selected values still appear in the dropdown. This behavior can be confusing and frustrating for developers, especially when working with complex forms.
Example
The following example demonstrates the problem. Suppose we have a form with a Ng-MultiSelectDropdown component that allows users to select multiple fruits:
<ng-multiselect-dropdown [data]="fruitData" [(ngModel)]="selectedFruits"></ng-multiselect-dropdown>We can reset the selected values using the reset() method:
this.selectedFruits = [];this.ngMultiSelectDropdown.reset();However, in some cases, the previously selected values still appear in the dropdown. This behavior can be replicated by selecting some values, resetting the dropdown, and then selecting the same values again. The dropdown will still show the previously selected values, even though they have been reset.
Possible Solutions
There are a few possible solutions to this problem. We will discuss each solution in detail.
Solution 1: Reset the NgModel
One possible solution is to reset the NgModel that is bound to the Ng-MultiSelectDropdown component. This can be done using the NgModel's reset() method:
this.selectedFruits = [];this.selectedFruits.reset();This will clear the selected values in the dropdown and prevent the previously selected values from appearing.
Solution 2: Use the Clear Method
Another possible solution is to use the clear() method provided by the Ng-MultiSelectDropdown component. This method clears the selected values and resets the dropdown:
this.ngMultiSelectDropdown.clear();This will clear the selected values and reset the dropdown, preventing the previously selected values from appearing.
Solution 3: Use the Reset Method
The reset() method provided by the Ng-MultiSelectDropdown component can also be used to reset the selected values. However, this method should be used with caution, as it resets the entire component, including the dropdown list and any other settings:
this.ngMultiSelectDropdown.reset();This will reset the entire component, including the dropdown list and any other settings. This may not be desirable in all cases, as it can affect other parts of the application.
Resetting the selected values in a Ng-MultiSelectDropdown component can be challenging, especially when the previously selected values still appear. However, there are a few possible solutions to this problem. Developers can reset the NgModel, use the clear() method, or use the reset() method to clear the selected values and reset the dropdown. By using these solutions, developers can ensure that the Ng-MultiSelectDropdown component works as expected and provides a user-friendly interface for selecting multiple options.
References
- Ng-MultiSelectDropdown: https://www.npmjs.com/package/ng-multiselect-dropdown
- StackOverflow: https://stackoverflow.com/questions/53114750/how-to-reset-the-ng-multiselect-dropdown
When working with Ng-MultiSelect dropdown in Angular, you might face issues while trying to reset the selected values. In this article, we will discuss how to achieve this.
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