Extend Autocomplete with a customizable option to not trigger when MinLength is set and the Textbox becomes empty

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Last Updated: 11 Jan 2021 15:02 by ADMIN

CHRISTOPHER

Created on: 06 Mar 2015 16:02

Category: AutoComplete

Type: Feature Request

Extend Autocomplete with a customizable option to not trigger when MinLength is set and the Textbox becomes empty

In order to fix concerns from #241 (https://github.com/telerik/kendo-ui-core/issues/241) the Autocomplete now shows a full list of items when the text entered has been deleted.  This ignores the MinLength option, and can cause unresponsiveness in the browser (since MinLength is generally there to reduce the amount of results).  From #574 this new functionality is intentional (and as such, the thread was closed as won't fix), but in practical terms, this causes issues for a lot of people.  If you really don't want to enforce MinLength when 0 results are returned, perhaps adding an extraoption like 'AlwaysEnforceMinLength' would solve this problem

6 comments

ADMIN

Alex Hajigeorgieva

Posted on: 11 Jan 2021 15:02

Hello, Tony,

It appears to work well with the current version when enforceMinLength is set to true and the minLength is 1:

https://dojo.telerik.com/oBOHacIt

Please let us know what steps to take to reproduce the erroneous behaviour.

Kind Regards,
Alex Hajigeorgieva
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Tony

Posted on: 13 Jan 2018 07:35

this still isn't working properly - I see the "enforceMinLength" property - but this doesn't work when minLength is "1".  

Worked fine in the "2015.2.805" -- what happened??????

Thiago

Posted on: 08 Dec 2017 17:39

Does not make sense it do not respect the MinLength when clear data, if MinLength is 2 then it it should only display anything if it as at least two characters

Simon

Posted on: 30 Jan 2016 21:18

No way this should be the default behaviour, it is WRONG. I've just discovered this and to me it's a plain bug. I'm using this against recordsets containing 1000's of rows, so it will kill performance unless I code around it. Telerik, please amend it. I'm fine if it's a flag as suggested, but default should be triggerOnEmptyText = false. Thanks.

Imported User

Posted on: 04 Aug 2015 16:45

I'm agree, when the textbox is empty no information must be retrieved. I think this could be optional with the proposed triggerOnEmptyText flag.

gsharp

Posted on: 09 Jun 2015 09:53

If the .MinLength is set to a specific value, the read action is called by the Autocomplete box as soon as the Autocomplete Textbox becomes empty.

This behaviour is not always desired, therefore I suggest to extend the MinLength method with an optional parameter to support both behaviours.

Like
.MinLength(int length, bool triggerOnEmptyText = true)