Guide on creating a condition that displays an alert message if it exists, otherwise, it should be

Question

Guide on creating a condition that displays an alert message if it exists, otherwise, it should be

I am looking to insert data into an array list based on the product id. If the product id already exists in the array list, I need to display an alert message; otherwise, I want to add it to the list. Please provide me with the necessary conditions for this.

public stockDataSource: Array<any> = [];

const stockData: StockTrackingItem = {
    StockTrackingItemId: 0,
    StockTrackingId: 0,
    Sno: this.Sno,
    ProductId: stock.productId,
    SKU: stock.sku,
    SKUId: stock.skuId
};

if (this.stockDataSource.length === 0) {
    this.stockDataSource.push(stockData);
} else {
    for (let index = 0; index < this.stockDataSource.length; index++) {
        if (this.stockDataSource[index].ProductId === stockData.ProductId) {
           this.alertService.warnAlert("Product already exists");
            break;
        }
    }
    this.stockDataSource.push(stockData);
}

angular typescript bootstrap-4

Answer 1

Answer №1

Here is one approach to achieve this task. Have you considered whether it's necessary to trigger an alert for each item in the array? It might be more efficient to gather existing ids in an array and then display them all at once. Ultimately, this decision depends on the overall design of your application.

this.stockDataSource.forEach(data => {
    if(data.ProductId) {
        alert("This id exists");
    } else {
        this.array.push(data);
    }
}

Answer 2

Here is one approach to achieve this task. Have you considered whether it's necessary to trigger an alert for each item in the array? It might be more efficient to gather existing ids in an array and then display them all at once. Ultimately, this decision depends on the overall design of your application.

this.stockDataSource.forEach(data => {
    if(data.ProductId) {
        alert("This id exists");
    } else {
        this.array.push(data);
    }
}

Answer 3

Answer №2

Utilizing a filter to determine if the existing stockDataSource list contains the productId is a recommended approach for validation. It is anticipated that both the stockDataSource and stockData will possess dynamic values.

    public stockDataSource: Array<any> = []; // The content of this array is subject to change

    const stockData: StockTrackingItem = {   // The content of this object is dynamic
                            StockTrackingItemId: 0,
                            StockTrackingId: 0,
                            Sno: this.Sno,
                            ProductId: stock.productId,
                            SKU: stock.sku,
                            SKUId: stock.skuId
                        };
const ArrayListToBeAdded = [{...stockData},{...stockData}] // An array containing copies of stockData items of type StockTrackingItem to be inserted  // Modify this according to your data insertion requirement
ArrayListToBeAdded.forEach(data=>decidingFn(data));

    //The code below pertains to filtering and verifying the matching product ids in stockDataSource list


        decidingFn(stockData:StockTrackingItem){
        const productMatchList=stockDataSource.filter(stock=>stock.ProductId==stockData.ProductId);

                    if(productMatchList.length===0){
                    this.stockDataSource.push(stockData);
                    }else{
                    this.alertService.warnAlert("Product already exists");
                    }
        }

Answer 4

Utilizing a filter to determine if the existing stockDataSource list contains the productId is a recommended approach for validation. It is anticipated that both the stockDataSource and stockData will possess dynamic values.

    public stockDataSource: Array<any> = []; // The content of this array is subject to change

    const stockData: StockTrackingItem = {   // The content of this object is dynamic
                            StockTrackingItemId: 0,
                            StockTrackingId: 0,
                            Sno: this.Sno,
                            ProductId: stock.productId,
                            SKU: stock.sku,
                            SKUId: stock.skuId
                        };
const ArrayListToBeAdded = [{...stockData},{...stockData}] // An array containing copies of stockData items of type StockTrackingItem to be inserted  // Modify this according to your data insertion requirement
ArrayListToBeAdded.forEach(data=>decidingFn(data));

    //The code below pertains to filtering and verifying the matching product ids in stockDataSource list


        decidingFn(stockData:StockTrackingItem){
        const productMatchList=stockDataSource.filter(stock=>stock.ProductId==stockData.ProductId);

                    if(productMatchList.length===0){
                    this.stockDataSource.push(stockData);
                    }else{
                    this.alertService.warnAlert("Product already exists");
                    }
        }

Guide on creating a condition that displays an alert message if it exists, otherwise, it should be

Answer №1

Answer №2

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