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Nairaland Forum / Science/Technology / Programming / Already Exist Remove From List (1249 Views)
Already Exist Dont Display 3000 k naira for who can solve it / Remove Already Seleted Data From List / Already Exist Remove From List (2) (3) (4)
Already Exist Remove From List by skyhighweb(m): 1:51pm On Apr 30, 2017 |
Am using php MySQL and i have a table which get filled, i want to be able to remove already selected data from list(frontend) automatically to avoid multiple selection and not having two of the same data in the table how do i go about this, thanks. for example, if on the drop menu we have mike Jacob Steve David if someone already selected David i don't want him to show up on the list plz note i already have already exist code, i just need to know how not to show it, thanks |
Re: Already Exist Remove From List by lovely8(m): 2:53am On May 01, 2017 |
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Re: Already Exist Remove From List by roadsta(m): 12:29pm On May 01, 2017 |
var array = ['a', 'b', 'a', 'c', 'a', 'd']; // the list var element = 'a'; // selected element var idx = array.indexOf(element); // first find the element index while (idx != -1) { // this makes sure the element is defined in the list array.splice(index, 1); // this return a new list without the selected element } Note that this wont work in older browsers like ie 7 but if you target such, you can use polyfills. |
Re: Already Exist Remove From List by skyhighweb(m): 12:40pm On May 01, 2017 |
roadsta:looks like javascript |
Re: Already Exist Remove From List by roadsta(m): 3:33pm On May 01, 2017 |
^^ Oh yes! it is javascript. Just translate it to favourite language, But if you can´t do it. tell me your favourite language skyhighweb: |
Re: Already Exist Remove From List by vicsrael: 3:42pm On May 01, 2017 |
skyhighweb:Select unique columnname from table or if u need more than one column and u don't want a particular column to repeat value use select * from table group by norepeatcolumnname |
Re: Already Exist Remove From List by skyhighweb(m): 5:06pm On May 01, 2017 |
roadsta:php |
Re: Already Exist Remove From List by skyhighweb(m): 5:07pm On May 01, 2017 |
vicsrael:not asking about that |
Re: Already Exist Remove From List by vicsrael: 8:32pm On May 01, 2017 |
skyhighweb:Explain better than |
Re: Already Exist Remove From List by skyhighweb(m): 10:42pm On May 01, 2017 |
vicsrael:how can i make a selected data not show up in list anymore. for example on the list are steve mike dave moses if someone select dave i dont want it to show up on the list anymore. hope u understand. |
Re: Already Exist Remove From List by roadsta(m): 11:49pm On May 01, 2017 |
skyhighweb:In that case all you need to do is : - grab the value from the array - then call unset($value) to remove it |
Re: Already Exist Remove From List by skyhighweb(m): 6:13am On May 02, 2017 |
roadsta:okay how do i do that, am not fully sure which code to edit or add |
Re: Already Exist Remove From List by roadsta(m): 8:44am On May 02, 2017 |
skyhighweb: Try to be more elaborate in your questions(detailed information) if you want an elaborate answer. O.k Lets see an example : From your initial post,i understaood that you have a list of names like "array(mike, jacob, steve, David); right? If so, all you have to do is iterate through the list, grab the selected element in the list and remove with the unset fuction passing in the key : As an example: $users = [mike, jacob, steve, david]; foreach($users as $key=>$val) { if ($val==david) unset($names[$key]); } print_r($users); I hope this should help solve the problem. |
Re: Already Exist Remove From List by skyhighweb(m): 12:27pm On May 02, 2017 |
roadsta:i sent u a mail |
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