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Data already exists API in angular 8

siva nathan

I want to show pop-up based on data exists in dB. I have a table called student. If am entering exists data in my form I need to validate the data and show pop-up.if data already exists need to show confirmation pop-up if yes I will save data into dB

2 Replies

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Salman Beg6y ago
Whenever any users enter data then compare that data with db and if data exists based on that you can show popup. Based on the popup confirmation you can save the data. Thanks
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Piyush Pansuriya6y ago
Hi Siva,
You have to check from API or server side code by existing student identity. and return the message to Angular.
If already exist than return the code 409 (Conflict). By checking the code you should show the popup message.
Please share your code for more clearity.
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