when it delete success, why not just reinvocation the GET method to get
the NOW list?
Partha Majumdar <partha6...@gmail.com> 于2018年9月24日周一 下午4:55写道：
> Dear Sir/Madam,
>
> I am new to Angular. I have started programming using Angular and Node
> since 17-Sep-2018.
>
> I have a page where I display a list of currencies and allow for deleting
> individual currencies from the list.
>
> On clicking the Delete button, the onDelete() function is firing properly
> and calling the DeleteCurrency() service. The message is propagated to my
> node service and the data is deleted from the database. However, when the
> reply is received, the list should refresh without the deleted currency.
> This is not happening.
>
> I am attaching my angular and node code for your kind reference.
>
> Please help.
>
> Regards,
> Partha
>
> *** ANGULAR SIDE OF TE CODE ***
>
> deleteCurrency(currencyCode: string) {
> this.httpClient.delete<{message: string}>('
> http://localhost:3000/api/currency/' + currencyCode)
> .subscribe(() => {
> alert('BEFORE DELETE:' + this.currencyList.length);
> const updatedCurrencies = this.currencyList.filter(currency => currency.
> currencyCode !== currencyCode);
> this.currencyList = updatedCurrencies;
> alert('AFTER DELETE:' + this.currencyList.length);
> this.currencyListUpdated.next([...this.currencyList]);
> });
> }
>
> *** CODE ON NODE JS ***
>
>
> router.delete("/:currencyCode", (request, response, next) => {
> (async () => {
> const SQLCurrencyDeleteStatement = "DELETE CURRENCY " +
> " WHERE CURRENCY_CODE = " + "'" + request.params.currencyCode + "';";
> console.log(SQLCurrencyDeleteStatement);
>
> returnValue = await executeUpdate(paikariConn, SQLCurrencyDeleteStatement
> );
> console.log(returnValue);
> response.status(201).json({
> message: "Currency deleted successfully"
> });
> })();
> });
>
>
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