alfresco-ng2-components/docs/core/interfaces/card-view-item.interface.md
2023-03-17 15:21:38 +00:00

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---
Title: Card View Item interface
Added: v2.0.0
Status: Active
Last reviewed: 2018-05-08
---
# [Card View Item interface](../../../lib/core/src/lib/card-view/interfaces/card-view-item.interface.ts "Defined in card-view-item.interface.ts")
Defines the implementation of an item in a [Card View component](../components/card-view.component.md).
## Definition
```ts
export interface CardViewItem {
label: string;
value: any;
key: string;
default?: any;
type: string;
displayValue: string;
editable?: boolean;
icon?: string;
data?: any;
}
```
### Properties
| Name | Type | Default | Description |
| ---- | ---- | ------- | ----------- |
| label | string | "" | Item label |
| value | any | | The original data value for the item |
| key | string | "" | Identifying key (important when editing the item) |
| default | any | | The default value to display if the value is empty |
| displayValue | string | "" | The value to display |
| editable | boolean | false | Toggles whether the item is editable |
| clickable | boolean | false | Toggles whether the item is clickable |
| icon | string | | The material icon to show beside clickable items |
| data | any | null | Any custom data which is needed to be provided and stored in the model for any reason. During an update or a click event this can be a container of any custom data which can be useful for 3rd party codes. |
## Details
Card item components are loaded dynamically by the
main [Card View component](../components/card-view.component.md). This allows you to define your own
component for a custom item type.
For example, follow the steps given below to add a **stardate** type to display Captain
Picard's birthday (47457.1):
1. Define the model for the custom type.
Your model must extend the [`CardViewBaseItemModel`](../../../lib/core/src/lib/card-view/models/card-view-baseitem.model.ts) class and implement the [`CardViewItem`](../../../lib/core/src/lib/card-view/interfaces/card-view-item.interface.ts)
and [`DynamicComponentModel`](../../../lib/core/src/lib/common/services/dynamic-component-mapper.service.ts) interfaces. See the
[Card View Text Item model source](https://github.com/Alfresco/alfresco-ng2-components/blob/develop/lib/core/card-view/components/card-view-textitem/card-view-textitem.component.ts)
for an example of how to do this.
```ts
import { CardViewBaseItemModel, CardViewItem, DynamicComponentModel } from '@alfresco/adf-core';
export class CardViewStarDateItemModel extends CardViewBaseItemModel implements CardViewItem, DynamicComponentModel {
type: string = 'star-date';
get displayValue() {
return this.convertToStarDate(this.value) || this.default;
}
private convertToStarDate(starTimeStamp: number): string {
// Do the magic
}
}
```
2. Define the component for the custom type.
The selector is not important given that this is a dynamically loaded component.
You can choose any name for the selector, but it makes sense to follow the Angular standards.
```ts
@Component({
selector: 'card-view-stardateitem' /* For example */
...
})
export class CardViewStarDateItemComponent {
@Input()
property: CardViewStarDateItemModel;
@Input()
editable: boolean;
constructor(private cardViewUpdateService: CardViewUpdateService) {}
isEditable() {
return this.editable && this.property.editable;
}
showStarDatePicker() {
...
}
}
```
See the
[Card View Text Item component source](https://github.com/Alfresco/alfresco-ng2-components/blob/develop/lib/core/card-view/components/card-view-textitem/card-view-textitem.component.ts)
or the
[Card View Date Item component source](https://github.com/Alfresco/alfresco-ng2-components/blob/develop/lib/core/card-view/components/card-view-dateitem/card-view-dateitem.component.ts) for examples of how to make the field
editable.
3. Bind your custom component to the [custom model](../../../node_modules/@alfresco/js-api/src/api/content-rest-api/api/customModel.api.ts) type so that Angular's dynamic component
loader can find it.
```ts
@Component({
...
providers: [ CardItemTypeService ] /* If you don't want to pollute the main instance of the CardItemTypeService service */
...
})
export class SomeParentComponent {
constructor(private cardItemTypeService: CardItemTypeService) {
cardItemTypeService.setComponentTypeResolver('star-date', () => CardViewStarDateItemComponent);
}
}
```
The [Card Item Type service](../services/card-item-types.service.md) maps each item type to the
corresponding component. See its [doc page](../services/card-item-types.service.md) for further
details.
## See also
- [Card View component](../components/card-view.component.md)
- [Card Item Types service](../services/card-item-types.service.md)