Oracle Apex：如何将表单中的数字字段限制为仅允许数字？

Question

I have an item in a form which is a number field and I want to somehow make sure that only numbers are accepted in the field. If users enter letters I want the field to reject it.

I already tried a validation but it was unsuccessful, is there anyway I get make this happen via a dynamic action with either a javascript code or a "pl/sql code"?

Answer 1

There's absolutely nothing you should do except setting its type to Number field .

Yes, you can type anything you want into it, but Oracle won't store anything but numbers. It'll raise the "Field name must be numeric" error and stop.

Why would you want to reinvent the wheel?

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If you must, try with dynamic action on that item (let's call it P13_DEPTNO) .

• When event: Key Press

• Selection type: Item

• Item: P13_DEPTNO

• True action: execute PL/SQL code (with "Items to submit": P13_DEPTNO):

   begin if not regexp_like(:P13_DEPTNO, '^\\d+$') then raise_application_error(-20000, 'Digits only'); end if; end;

Answer 2

The easiest and the fastest way is to set the Field Type as Number field

It will raise the error "Field name must be numeric" and stop the further execution.

Answer 3

Sometimes you do need to prevent users from inserting anything else but numbers. Especially if this field is used for calculations. So you can use this https://www.foxinfotech.in/2020/02/oracle-apex-allow-only-integer-value-using-jquery.html

Answer 4

In case anyone needs the answer....

enter this in the page JAVASCRIPT and GLOBAL variable declaration....

function setInputFilter(textbox, inputFilter) {
  ["input", "keydown", "keyup", "mousedown", "mouseup", "select", "contextmenu", "drop"].forEach(function(event) {
    textbox.addEventListener(event, function() {
      if (inputFilter(this.value)) {
        this.oldValue = this.value;
        this.oldSelectionStart = this.selectionStart;
        this.oldSelectionEnd = this.selectionEnd;
      } else if (this.hasOwnProperty("oldValue")) {
        this.value = this.oldValue;
        this.setSelectionRange(this.oldSelectionStart, this.oldSelectionEnd);
      } else {
        this.value = "";
      }
    });
  });
}

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Then go to the page item you want to restrict to numbers, and right click, add dynamic action, when: event: key press, selection type: items, items (item you have selected), add a true action...and have it execute JS CODE, then enter this code... replace the page item with your page item name...

setInputFilter(document.getElementById("PXX_XXXX"), function(value) {
  return /^-?\d*$/.test(value); });

And it will only let you enter numbers into the item.