FlutterArtist BlockQuickItemUpdateAction Ex1

Structure of the example
BlockQuickItemUpdateAction

In FlutterArtist, there are 3 methods to create or update an ITEM. The most common is using a Form, the second is QuickAction, and the last is BackendAction.

Basically, a QuickAction is an action executed by a Block to quickly create or modify an ITEM without going through complex Form operations. The result obtained is an ITEM_DETAIL, which will be directly updated into the Block. This process bypasses the data collection step that users perform on a Form, while the subsequent processing remains the same.

In this article, we will explore how to quickly update an ITEM using BlockQuickItemUpdateAction.

BlockQuickItemUpdateAction

abstract class BlockQuickItemUpdateAction<
    ID extends Object, //
    ITEM extends Identifiable<ID>,
    ITEM_DETAIL extends Identifiable<ID>,
    FILTER_CRITERIA extends FilterCriteria> extends Action {
  final BlockQuickItemUpdateActionConfig config;
  final ITEM item;

  const BlockQuickItemUpdateAction({
    required this.item,
    required this.config,
    required super.needToConfirm,
    required super.actionInfo,
  });

  Future<ApiResult<ITEM_DETAIL>> performQuickUpdateItem({
    required Object? parentBlockItem,
    required FILTER_CRITERIA filterCriteria,
  });
}

Scenario 1:

In this Demo43a example, on the main screen, the list of Customers is displayed in a Davi table. We will perform a quick update of a customer's VIP status by clicking the corresponding CheckBox on that specific data row.

No ADS

Scenario 2 - Update Code via Dialog:

The user clicks a button to display a Dialog containing a TextField, then enters a "new customer code" for the current Customer, and finally clicks the "Change" button to update.

Note that this is not a traditional Form as you might be familiar with. It is simply a TextField placed on a Dialog to quickly gather information from the user, optimizing the data entry process.

FlutterArtist BlockQuickItemCreationAction Ex1
FlutterArtist BlockQuickMultiItemCreationAction Ex1
FlutterArtist BlockSilentItemCreationAction Ex1 (***)
FlutterArtist BlockSilentItemUpdateAction Ex1 (***)
FlutterArtist BlockBackendAction Ex1 (***)

1. Structure of the example

2. BlockQuickItemUpdateAction

First, we create the Customer43aVipUpdateAction class, extending the BlockQuickItemUpdateAction class to perform a quick VIP status update for a Customer:

customer43a_vip_update_action.dart

class Customer43aVipUpdateAction
    extends
        BlockQuickItemUpdateAction<
          int, //
          CustomerInfo,
          CustomerData,
          EmptyFilterCriteria
        > {
  final bool vip;

  final _customerRestProvider = CustomerRestProvider();

  Customer43aVipUpdateAction({
    required super.item,
    required super.config,
    required this.vip,
    required super.needToConfirm,
    required super.actionInfo,
  });

  @override
  Future<ApiResult<CustomerData>> performQuickUpdateItem({
    required Object? parentBlockItem,
    required EmptyFilterCriteria filterCriteria,
  }) async {
    return await _customerRestProvider.updateVip(customerId: item.id, vip: vip);
  }

  @override
  CustomConfirmation? createCustomConfirmation() {
    return null;
  }
}

Note: An object of the Customer43aVipUpdateAction class will be executed by the Customer43aBlock. Therefore, the corresponding Generics parameters with the same names in these two classes must be identical.

BlockQuickItemUpdateAction

abstract class BlockQuickItemUpdateAction<
    ID extends Object, //
    ITEM extends Identifiable<ID>,
    ITEM_DETAIL extends Identifiable<ID>,

    FILTER_CRITERIA extends FilterCriteria

>

Block

abstract class Block<
    ID extends Object,
    ITEM extends Identifiable<ID>,
    ITEM_DETAIL extends Identifiable<ID>,
    FILTER_INPUT extends FilterInput, 
    FILTER_CRITERIA extends FilterCriteria, 
    FORM_INPUT extends FormInput, 
    FORM_RELATED_DATA extends FormRelatedData>

The _onChangedVip() method below is called when the user clicks the CheckBox. In this method, we create an instance of the Customer43aVipUpdateAction class and execute it via Customer43aBlock:

_onChangedVip()

Future<void> _onChangedVip({
  required CustomerInfo customerInfo,
  required bool vip,
}) async {
  // Debug:
  FlutterArtist.codeFlowLogger.addMethodCall(
    ownerClassInstance: this,
    currentStackTrace: StackTrace.current,
    parameters: {"customerInfo": customerInfo, "vip": vip},
  );
  //
  final updateAction = Customer43aVipUpdateAction(
    item: customerInfo,
    config: BlockQuickItemUpdateActionConfig(errorIfItemNotInTheBlock: true),
    vip: vip,
    needToConfirm: true,
    actionInfo:
        'Update VIP to "$vip" for Customer:\n'
        '${customerInfo.code} - ${customerInfo.name}',
  );
  // Customer43aBlock block:
  await block.executeQuickItemUpdateAction(action: updateAction);
}

Scenario 2:

In Scenario 2, we create the Customer43aCodeUpdateAction class to quickly update the Code for a Customer.

customer43a_code_update_action.dart

class Customer43aCodeUpdateAction
    extends
        BlockQuickItemUpdateAction<
          int, //
          CustomerInfo,
          CustomerData,
          EmptyFilterCriteria
        > {
  final String code;

  final _customerRestProvider = CustomerRestProvider();

  Customer43aCodeUpdateAction({
    required super.item,
    required super.config,
    required this.code,
    required super.needToConfirm,
    required super.actionInfo,
  });

  @override
  Future<ApiResult<CustomerData>> performQuickUpdateItem({
    required Object? parentBlockItem,
    required EmptyFilterCriteria filterCriteria,
  }) async {
    return await _customerRestProvider.updateCode(
      customerId: item.id,
      code: code,
    );
  }

  @override
  CustomConfirmation? createCustomConfirmation() {
    return null;
  }
}

After the user enters a "new code" for the Customer in the Dialog and clicks the "Change" button, the _onPressedBtnUpdateCustomerCode() method is triggered. In this method, we instantiate the Customer43aCodeUpdateAction class (passing in the "new code") and execute it via Customer43aBlock:

_onPressedBtnUpdateCustomerCode()

Future<void> _onPressedBtnUpdateCustomerCode() async {
  FlutterArtist.codeFlowLogger.addMethodCall(
    ownerClassInstance: this,
    currentStackTrace: StackTrace.current,
    parameters: null,
  );
  //
  var updateAction = Customer43aCodeUpdateAction(
    item: widget.customer,
    config: BlockQuickItemUpdateActionConfig(errorIfItemNotInTheBlock: true),
    code: customerCode,
    needToConfirm: false,
    actionInfo: "Update code for Customer:\n${widget.customer.name}",
  );
  //
  BlockQuickItemUpdateResult result = await widget.customer43aBlock
      .executeQuickItemUpdateAction(action: updateAction);
  if (result.successForFirst && context.mounted) {
    Navigator.of(context).pop();
  }
}

No ADS

FlutterArtist BlockQuickItemUpdateAction Ex1

1. Structure of the example

2. BlockQuickItemUpdateAction

FlutterArtist

FlutterArtist

Newest Articles