Imitation Box Horse - Homepage Activity Configuration (5)

Technical Stack
Appgallery Connect

Development Preparation
In the previous article, we implemented dynamic configuration for home page modules, enabling backend control over module visibility. This enhanced our app's flexibility and adaptability. Now, we'll extend this configuration system to include banners, activity entrances, and other modules with 较少 data by integrating them into the configuration framework. We'll use corresponding IDs in the configuration table to query related data tables.

Code Implementation

1. Create Banner Poster Table (home_poster) json { "objectTypeName": "home_poster", "fields": [ {"fieldName": "id", "fieldType": "Integer", "notNull": true, "belongPrimaryKey": true}, {"fieldName": "poster_id", "fieldType": "Integer", "notNull": true, "defaultValue": 0}, {"fieldName": "url", "fieldType": "String"}, {"fieldName": "router", "fieldType": "String"} ], "indexes": [ {"indexName": "posterIdIndex", "indexList": [{"fieldName":"poster_id","sortType":"ASC"}]} ], "permissions": [ {"role": "World", "rights": ["Read"]}, {"role": "Authenticated", "rights": ["Read", "Upsert"]}, {"role": "Creator", "rights": ["Read", "Upsert", "Delete"]}, {"role": "Administrator", "rights": ["Read", "Upsert", "Delete"]} ] }
2. Create Product Activity Entrance Table (home_good_center) json { "objectTypeName": "home_good_center", "fields": [ {"fieldName": "id", "fieldType": "Integer", "notNull": true, "belongPrimaryKey": true}, {"fieldName": "good_left_id", "fieldType": "Integer", "notNull": true, "defaultValue": 0}, {"fieldName": "title", "fieldType": "String"}, {"fieldName": "url", "fieldType": "String"} ], "indexes": [ {"indexName": "goodLeftIdIndex", "indexList": [{"fieldName":"good_left_id","sortType":"ASC"}]} ], "permissions": [ {"role": "World", "rights": ["Read"]}, {"role": "Authenticated", "rights": ["Read", "Upsert"]}, {"role": "Creator", "rights": ["Read", "Upsert", "Delete"]}, {"role": "Administrator", "rights": ["Read", "Upsert", "Delete"]} ] }
3. Populate Data Banner Posters json { "cloudDBZoneName": "default", "objectTypeName": "home_poster", "objects": [ { "id": 10, "poster_id": 1, "url": "Online Image URL", "router": "string1" } ] } Product Activity Entrances json { "cloudDBZoneName": "default", "objectTypeName": "home_good_center", "objects": [ { "id": 10, "good_left_id": 1, "title": "Fresh Selections", "url": "Online Image URL" }, { "id": 20, "good_left_id": 1, "title": "New Arrivals", "url": "Online Image URL" }, { "id": 30, "good_left_id": 1, "title": "Today's Recommendations", "url": "Online Image URL" } ] }
4. Synchronize Tables and Data to the Cloud After populating data, submit the tables and data to the cloud database through AppGallery Connect.
5. Data Query with Linked IDs typescript @State homeActivity: HomeActivitySetting[] = []; // Home page activity configuration @State homeGoodCenter: HomeGoodCenter[] = []; // Product activity entrances

async fetchHomeData() {
try {
let databaseZone = cloudDatabase.zone('default');

// Query home activity configuration
let condition3 = new cloudDatabase.DatabaseQuery(home_activity_setting);
let listData3 = await databaseZone.query(condition3);
let json3 = JSON.stringify(listData3);
let data3: HomeActivitySetting[] = JSON.parse(json3);
this.homeActivity = data3;

// Query product activity entrances using the linked ID
let home_good = new cloudDatabase.DatabaseQuery(home_good_center);
home_good.equalTo("good_left_id", data3[0].good_left_id); // Filter by linked ID
let list5 = await databaseZone.query(home_good);
let json5 = JSON.stringify(list5);
let data5: HomeGoodCenter[] = JSON.parse(json5);
this.homeGoodCenter = data5;

hilog.info(0x0000, 'testTag', `Successfully fetched ${this.homeGoodCenter.length} product activities`);

} catch (err) {
hilog.error(0x0000, 'testTag', Failed to query data, code: ${err.code}, message: ${err.message});
}
}

1. Modify Product Activity Entrance Component typescript import { HomeGoodCenter } from "../entity/HomeGoodCenter"

@Component
@Preview
export struct SpecialColumn {
@link goodInfo: HomeGoodCenter[]

build() {
Column() {
List({ space: 10 }) {
ForEach(this.goodInfo, (data: HomeGoodCenter) => {
ListItem() {
Column() {
Text(data.title)
.fontSize(16)
.fontWeight(FontWeight.Bold)
.fontColor(Color.Black)
Blank()
Image(data.url)
.width('28%')
.height(90)
.margin({ bottom: 8 })
.objectFit(ImageFit.Cover)
}
.borderRadius(5)
.backgroundColor("#ffeedeb8")
.padding(5)
}
})
}
.listDirection(Axis.Horizontal)
}
.margin({ top: 10 })
}
}

1. Integrate into Home Page
   typescript
   // In the home page component
   build() {
   Column() {
   // Conditionally render based on configuration
   if (this.homeActivity[0]?.banner_status) {
   // Render banner using home_poster data
   }

   if (this.homeActivity[0]?.goods_list_status) {
   SpecialColumn({ goodInfo: this.homeGoodCenter })
   }

   // Other modules...
   }
   }