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Make "ReadOnly" any field with data in it

Forum Index > JavaScript > Make "ReadOnly" any field with data in it
2009-03-19 11:16:20
Chocko
Registered: Mar 19 2009
Posts: 14

I've done extensive searching on the net as well as browsed these forums quite a bit, so I think I'm asking a question that isn't often asked.

Sorry if I didn't see an original thread and this is a repost!!

With the click of a button using Javascript, I'm trying to change the properties of any field without a null value to Read Only.

As I don't know the command for "all fields", I started off working with a specific field.

This is what i have so far, but doesn't seem to work:

var f = this.getField("A 25");
var bLock = (event.value != "");
f.readOnly = bLock;

What am i missing? and does anyone know how i could recode the first like so that it applies to all fields?

Thanks,

Chocko

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2009-03-19 14:17:25
#1
Chocko
Registered: Mar 19 2009
Posts: 14
double post
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2009-03-20 10:16:08
#2
Chocko
Registered: Mar 19 2009
Posts: 14
I was able to figure this out, if anyone's curious--here's what I did:

{
var f = this.getField("Day");
if (f.value == "")
f.readonly = false;
else
f.readonly = true;
}

This works like a charm, but there is a simple redundancy problem. As I don't know how to get that first line to apply to any field in the pdf, i have MANY lines of code.

Can anyone help me simplify this?
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2009-03-20 10:41:38
#3
gkaiseril
Expert
Registered: Feb 23 2006
Posts: 4308
With AcroForms you will need to loop through all form fields. You can use the "numFields" property to obtain the number of form fields and then use a control loop and use the "getNthFieldName()" method to get each field's name.
var iFieldName; // for nth field namevar oFieldName; // object for iFieldName// loop through fields or formfor(i = 0; i < this.NumFields; i++) {iFieldName = this.getNthFieldName(i); // get i field nameoFieldName = this.getField(iFieldName); // object for i field nameoFieldName.readonly = false; // assume r/w// process non-button fields only, buttons do not have a field valueif(ofieldName.type != "button") {// test non-button field for a valueif(oFieldName.valueAsString != "") {oFieldName.readonly = true; // has data so r/o} // end if value not empty} // end if non button type} // end loop through fields

George Kaiser

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2009-03-20 11:56:37
#4
Chocko
Registered: Mar 19 2009
Posts: 14
gkaiseril wrote:
With AcroForms you will need to loop through all form fields. You can use the "numFields" property to obtain the number of form fields and then use a control loop and use the "getNthFieldName()" method to get each field's name.
var iFieldName; // for nth field namevar oFieldName; // object for iFieldName// loop through fields or formfor(i = 0; i < this.NumFields; i++) {iFieldName = this.getNthFieldName(i); // get i field nameoFieldName = this.getField(iFieldName); // object for i field nameoFieldName.readonly = false; // assume r/w// process non-button fields only, buttons do not have a field valueif(ofieldName.type != "button") {// test non-button field for a valueif(oFieldName.valueAsString != "") {oFieldName.readonly = true; // has data so r/o} // end if value not empty} // end if non button type} // end loop through fields
Thanks for the reply! I'll see what i can get it to do.
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2010-10-29 14:15:56
#5
Minh Duong
Registered: Oct 29 2010
Posts: 1
i made a button save as and it save to my server but i want after save all the fields become read only.
but when i try to put the code:

this.getField("lastname").readonly=true;
event.target.myTrustFunct(event.target); //this should execute the save as js file
event.target.closeDoc(true); //autocloses document if validation passesand it doesn't work!!!
but it works when:

event.target.myTrustFunct(event.target); //this should execute the save as js file
event.target.closeDoc(true); //autocloses document if validation passesplease so me my problem and how can i make the field readonly???
Thanks
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