Help Center/ Huawei Cloud Astro Zero/ User Guide (Low-Code)/ Frontend Development/ Standard Pages/ Setting Properties of Standard Page Widgets/ Setting Properties of the List View Widget
Updated on 2025-08-26 GMT+08:00
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Setting Properties of the List View Widget

The list view is a composite widget that can flexibly combine the content of list items and dynamically display the content based on the instantiation data.

The list view consists of the upper list area and the lower page number area. When using the list view, you need to bind a data model to the list view and set the data type to array. To use the pagination function, the pagination component must be placed in the outermost List View Container.

Figure 1 List View

Data Binding

For widgets on standard pages, different view models are created to link various data sources to the return values or property values of the widgets, enabling dynamic data effects.
  • Value binding: Value binding is similar to the v-model of the Vue. Bidirectional data binding is created on the widget. Value binding automatically selects the correct method to update the element based on the widget type. In addition, it checks events that cause binding data changes to update data.
    1. In the Data Binding area, click in the value binding area. The Select Model dialog box is displayed.
    2. Click New.
    3. Set Model Name and Source, and click Next.
      Figure 2 Defining a model

      There are four types of models: Custom, Objects, Services, and Events. Each type of model contains parameter definitions and method definitions. Methods are APIs defined on models. In general, these APIs are called in event scripts (such as page loading events and mouse click events) associated with frontend widgets to implement certain logic.

      Table 1 Model types

      Type

      Model Description

      Model Parameter Description

      Model Method Description

      API Calling Method

      Custom

      Models defined by developers.

      Defined by developers. Subnodes can be added.

      Developer-defined method.

      $model.ref("modelName").actionName();

      Objects

      Object models are generated based on the mapping of the object table. For details about the object model, see Objects.

      The system automatically obtains all fields of an object. Developers can select some fields as parameters.

      The system automatically generates four methods: query, save, delete, and count.
      • Query: $model.ref("modelName").query(param);
      • Save: $model.ref("modelName").save();
      • Delete: $model.ref("modelName").delete();
      • Statistics: $model.ref("modelName").count();

      Services

      Service models are generated by mapping backend services. Currently, service models can only be mapped to flows or scripts. For details about the service model, see Flows and Scripts.

      The parameters are mapped to the inputParam and outputParam sections based on the input and output parameters of backend services.

      The run method is automatically generated to execute a flow or a script associated with the model.

      $model.ref("modelName").run();

      Events

      For event models, data binding is created based on fields of a backend event. Model data can be updated based on the web socket.

      Parameters are generated by mapping fields of backend events.

      Directly use.

      Directly use.

      In addition to the methods defined in models, the platform provides the following standard APIs for all models:

      • Obtaining model data: $model.ref("modelName").getData();
      • Setting model data: $model.ref("modelName").setData();
      • Setting model field values: $model.ref("modelName").setValue(key,value);
    4. On the Settings page of the new model, perform the following operations:
      • If Source is set to Custom in the previous step, you need to add customized parameters and types of subnodes.
      • If Source is set to Objects in the previous step, you need to configure the object and fields associated with the model.
      • If Source is set to Services in the previous step, you need to configure the backend service associated with the model. The backend service can be a script, flow, or public API.
      • If Source is set to Events in the previous step, you need to configure the event and event fields associated with the model.
    5. Click Next.

      Generally, you do not need to add a method. If you need to add or modify a method, refer to the method generated by the object and service by default.

    6. Click OK.
  • Property Binding: Binds a property of a container widget, such as hiding, style, and elastic layout, to a specific model field. Once bound, these properties automatically update in sync with the model field's value, functioning in a manner akin to Vue's v-bind directive.
    1. In the Data Binding area, click + next to Property Binding.
    2. Select a property of the container from the Properties drop-down list.
    3. Under Field, click . The model selection page is displayed.
    4. Click New.
    5. Set Model Name and Source, and click Next.
      There are four types of models: Custom, Objects, Services, and Events. Each type of model contains parameter definitions and method definitions. Methods are APIs defined on models. In general, these APIs are called in event scripts (such as page loading events and mouse click events) associated with frontend widgets to implement certain logic. For details, see Table 1.
      Figure 3 Defining a model
    1. On the Settings page of the new model, perform the following operations:
      • If Source is set to Custom in the previous step, you need to add customized parameters and types of subnodes.
      • If Source is set to Objects in the previous step, you need to configure the object and fields associated with the model.
      • If Source is set to Services in the previous step, you need to configure the backend service associated with the model. The backend service can be a script, flow, or public API.
      • If Source is set to Events in the previous step, you need to configure the event and event fields associated with the model.
    2. Click Next.

      Generally, you do not need to add a method. If you need to add or modify a method, refer to the method generated by the object and service by default.

    3. Click OK.

Basic Properties

Drag a widget to the list view widget, click the list view widget, and perform the following operations:

  • No Data Text: The name is displayed when no data is available.
  • Columns (PC): Set the number of columns displayed on the PC.
  • Columns (Mobile): Set the number of columns to be displayed on the mobile client.
  • Column Alignment: Select a column arrangement mode, such as Center, Left, or Right.
  • Loading Indicator: If a large amount of content needs to be displayed, it may take a long time for users to view the content. In this case, enabling this mode will improve user experience.

Mobile Configuration

  • Pull-to-Refresh: Whether to refresh the list.
  • Default Data Count: Set the number of data records displayed by default in the list view on the mobile device.
  • Loading Text: Whether to display the loading text when the user pulls up.
  • Async Loading: This mode is used together with the on-load-data event. During pull-up loading, data is obtained asynchronously.

Common

  • Name: name of the current widget.
  • Hid: indicates whether to hide the widget. In this mode, the widget is statically hidden. You can also set the attribute value of the widget to a model field of the Boolean type. In this way, you can control the value of the model field in the customized JavaScript code to determine whether to hide the widget. This dynamic setting has the highest priority.

Style

For users with rich frontend development experience, you can use the style panel to customize the page layout.

  • Layout: You can directly configure the CSS attributes of the page, for example, setting the width and height of a widget. You can also directly compile CSS code in Advance for further layout customization.
    • Display: You can quickly set the current element layout to block, inline-block, inline, or flex.
    • The box model diagram of the current element is displayed below Display. You can click the corresponding number and change the value to quickly change the inner and outer margins of the element.
    • The width and height of the current element are displayed below the current element box model diagram. By default, the width and height are adapted based on the current layout. You can manually enter values to configure the width and height of the current element.
    • When configuring the box model, width, and height, you can select multiple units, such as px, em, %, and auto.
  • Font: Set the font size, style, and color.
  • Background: Set the background color and transparency.
  • Border: Set the border color and width. The unit can be px, em, or %.
  • Shadow: Set the shadow color and style. The units px, em, and % are supported.
  • Advance: Directly write CSS code to apply to the current element.
    • Style Code: Style code of the widget. After the widget style is set, the style code is automatically displayed in this area. You can also customize the style code to configure the widget in detail. Custom code can be entered in multiple lines, and style parameters are highlighted.
    • Style Class: Name of the CSS style class of the widget, which can be referenced in the CSS code.
Parent Topic: Setting Properties of Standard Page Widgets