Re: Invisible and invalid char in textfield
Re: Invisible and invalid char in textfield
- Subject: Re: Invisible and invalid char in textfield
- From: Samuel Pelletier <email@hidden>
- Date: Tue, 13 Sep 2016 12:03:47 -0400
Flavio,
Thank you, this works perfectly.
It could be easily added to ERXWOTextField and WOText element by default...
Is there any situation where control char would be desirable in a web text input (except for the tab and new line) ?
Samuel
> Le 13 sept. 2016 à 10:05, Flavio Donadio <email@hidden> a écrit :
>
> Samuel,
>
>
> The user might have copied from another app and pasted into the field.
>
> The solution is to strip control characters from the user input. As you may know, there are a lot of ways to do that and dependent on the use case. For example, if it’s a multiline text input control (textarea), you may want to keep certain characters like carriage returns, line feeds and tabs.
>
> One example of stripping all control characters using pure Java:
>
> String.replaceAll("\\p{Cntrl}", "”);
>
> … and one example of stripping every control character, except for CR, LF and TAB:
>
> String.replaceAll("[\\p{Cntrl}^\r\n\t]+", "");
>
> I am sure NSString has methods for that...
>
>
> Cheers,
> Flavio
>
>> On 13/09/2016, at 09:40, Samuel Pelletier <email@hidden> wrote:
>>
>> Hi,
>>
>> I just encountered a strange error where a user managed to put a DEL char inside a text field. This char raise an SQL Exception in the server.
>>
>> First, I really would like to know how they manage to do this ! I do not even know how to put a DEL (code 127) inside text with the keyboard. I had some case with other control char in the past too.
>>
>> Second, is there a wonder way to filter these or a Javascript method to prevent them from the source, or any suggestion to handle this ?
>>
>> Real users are alway a source of unpredicted challenges.
>>
>> Thank,
>>
>> Samuel
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