Immediate validation of an Email Address

[Terrymorgan]

I am using Validation Xbasic
if a5_is_email_valid(e.data.EMAILADDRESS) = .f. then
validate_EMAILADDRESS.hasError = .t.
validate_EMAILADDRESS.errorText = "This is not a valid Email Address."
end if
which works fine, but I would prefer something that Immediately validates rather than at submit.
Is there another place to put this code or a javascript version.
Thanks

[frankbicknell]

Re: Immediate validation of an Email Address

You will have to do the validation on the client side. There are a lot of samples of code that checks email validity in JavaScript on the internet.

[kingcarol]

Re: Immediate validation of an Email Address

I use the Validation Rules for the field to do this:
Data Value -> Validation Expression Type: Custom Expression -> Custom Expression: a5_email_valid(CurrentValue)

[CharlesParker]

Re: Immediate validation of an Email Address

Thanks Carol - just what I was looking for!

[kotinkarwak]

Re: Immediate validation of an Email Address

Wow! I think AA has it all, think from this point on, am simply going to click click on any button, eclipse I see and find out where it leads, how would I have come to this if not from spending some time here in the forum?!

[CharlesParker]

Re: Immediate validation of an Email Address

Kotin,
you will find that the more you dig in the more you learn, the more you can do and then going forward in application development you can add new features faster than most developers can even think about it! I overheard a customer of an industry application provider saying to one of the owners that his biggest concern was that when they requested a new feature it would take months and sometimes more than a year to get incorporated! My users ask for something and I can usually deliver code changes in a day!

[jerry cooper]

Re: Immediate validation of an Email Address

I use the Validation Rules for the field to do this:
Data Value -> Validation Expression Type: Custom Expression -> Custom Expression: a5_email_valid(CurrentValue)

I am trying to use this, on data entry and modification, to allow EITHER a valid email address in the field OR for the field to be left blank. I can achieve the first but cannot figure out how to allow the field to be empty. Any help much appreciated

[Davidk]

Re: Immediate validation of an Email Address

If you wanted to validate client side I've always liked this one... mainly because it's one of the coolest expressions I've ever seen. This returns true or false.

function validateEmail(email) {
    var re = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(email);
}

Also, I think a5_email_valid() has been deprecated. Use A5_IS_EMAIL_VALID() instead.

[jerry cooper]

Re: Immediate validation of an Email Address

Also, I think a5_email_valid() has been deprecated. Use A5_IS_EMAIL_VALID() instead.

Many thanks for that, I like your expression (although too complicated for me!) However I have now got a result using the following custom validation, where EMAIL is the name of the field containing the email address, so it will now only accept a correctly formatted email address or be left blank

A5_IS_EMAIL_VALID(EMAIL).OR.EMAIL=" "

[CharlesParker]

Re: Immediate validation of an Email Address

Currently, it looks like the easiest thing to do, especially for a beginner at this is (in a UX) go to the field properties, open the validation javascript and comment out the already written code supplied by Alpha Software! I don't think that was available back when I first asked (over 3 years ago!) but it is in there now! Of course, it could have taken me 3 year to see it, lol.

The code isn't immediate as in an onchange event, but it stops the list control from submitting and alerts the user of the error. One thing of note, ".co" is considered valid just like ".com" so if your user fudges it, he probably won't be aware of it.

[kkfin]

Re: Immediate validation of an Email Address

".co" is considered valid because it is valid. There is life outside...

[CharlesParker]

Re: Immediate validation of an Email Address

yep, that's what I was saying essentially. Also for the new guy wanting to snag some simple code to get it working a bit better...this allows a blank field as well as validate the entry for an email address.

var emailfield = data;
if(emailfield = ' '){
	return true; 
	} else {
var flag = A5.emailValid(data);
if(flag) {return true;} else {return 'Not valid email';}
}

***See POST #13 for corrected code

[Davidk]

Re: Immediate validation of an Email Address

yep, that's what I was saying essentially. Also for the new guy wanting to snag some simple code to get it working a bit better...this allows a blank field as well as validate the entry for an email address.

var emailfield = data;
if(emailfield = ' '){
	return true; 
	} else {
var flag = A5.emailValid(data);
if(flag) {return true;} else {return 'Not valid email';}
}

Your code and concept need a bit of correction. You're actually assigning the value of a "space" to emailfield... not testing emailfield for a value.
You also shouldn't use a "space" as a value to compare. You should use an empty string.
As you've noted, A5.emailValid isn't available until the Nov 7 2018 release.
Although not required, camelCase is fairly well accepted Javascript notation.
Since you already have "data", there's not really any need to assign a new variable to it's value.
Your code should be...

if(data == ''){
	return true; 
}else{
	var flag = A5.emailValid(data);
	if(flag){
		return true;
	}else{
		return 'Not valid email';
	}
}

[CharlesParker]

Re: Immediate validation of an Email Address

Thanks David! I'm going to follow your advice, I wish I had a better understanding of "concept" but I am only as good as my teacher. Being self taught, I am proud to have gotten as far as I have, but honestly it's been great advice from guys like you who care enough to post code and a little concept.

I am having trouble trying to figure out when I might use "this.data" vs "data" vs "this" as well so any advice you could give on that (is it in the documentation?)would be mighty welcome, probably would be better-off discussed in another thread though.

[Davidk]

Re: Immediate validation of an Email Address

Most of the time you don't get to choose. You must use what Alpha gives you. In this case "data" carries the value in the control... whereas there is no "this.data". The inline doc usually tells you want you need to use and, in this case, so does the example code.