Thank you sir for the reply..
But I am using HTML forms then what should I do...?  I want error message
should display instantly when user enter existing mail id..!

On 1 Nov 2016 12:05 am, "Andromeda Yelton" <[email protected]>
wrote:

> If your model has the uniqueness constraint, you should get a form error
> message automatically. If you don't want your model to have that constraint
> but you still want your form to throw an error message, you can add a
> clean_<name of email field> and a clean_<name of mobile field> function
> that check for uniqueness and raise ValidationError if it fails (see
> examples here: https://docs.djangoproject.com/en/1.10/ref/
> forms/validation/ ).
>
> When the form saves successfully, the user will be redirected to the
> success_url you provide. That template can have success message text.
> Alternately, in your form_valid function in the view, you could add a
> success message that will get added to whatever page you're redirecting to
> (as long as you make sure your template is rendering messages) ->
> https://docs.djangoproject.com/en/1.10/ref/contrib/
> messages/#adding-a-message
>
> On Mon, Oct 31, 2016 at 1:55 AM, pradam programming <
> [email protected]> wrote:
>
>> Hi,
>> Please I need an advice on the best approach to take on the following
>> issues.
>> I have create a form to save user details like first name,last
>> name,email,mobile number etc...
>>
>> 1.Now I need to show error message (In Models i gave email and mobile no
>> field as unique = True) when user enter a email id if email id exists in
>> database show message like email id exists beside the email text field(also
>> for  the mobile no) else proceed with form.
>> 2.After i saving the form i need to show alert of success.
>>
>> regards,
>> Pradam Abhilash
>>
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> Andromeda Yelton
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