Where to put and do javascript to controll field

[frapin]

Hi all.,
i am new of service center.i hope you can help me.
I must do a javascript that must controll one filed put by user and verify that there is' not in the every record (about 90 record) in the probsummary table...
i read there are many method..
one is to do a script in libraryscript and call it or to put my script in the space javascript o calculation in the form design...
i read a similar script in the guide with the use of function doSelect.
How caN I pass parameter that every time change valor(pass by user)?
And can tell like mi script must be and where i put it?
Thakns a lot

[mateuszk]

Just a hint:

I believe you should look into "event services"
but be prepared, it doesn't always work as expected :-)

[tommy]

Event services is mainly used for integrations with external systems.

If I understand correct you want the user to enter a unique value into a field. This value must only exist in one incident ?

[mateuszk]

I've got a feeling I'm not getting the main thought behind this question.
frapin, care to clear this up for us?

tommy, I was actually thinking about "display events" in my post,
sorry for confusing things even more.

[tuncay]

When you enter an value in an field an want to validate is on save or add etc. You can put a javascript function in the javascript portion of the formatcontrol and set the right action to true or not null(field).
In this javascript you can make an select against probsummary with this field value. When you get resullts like rc = f_probsum.doSelect(....) == RC_SUCCESS then you can set a thread variable to true ($exist=true).
In your validation portion of the formatcontrol you can control with this variable your validation rule

[pfilaretov]

When you enter an value in an field an want to validate is on save or add etc....
When you get resullts like rc = f_probsum.doSelect(....) == RC_SUCCESS...

And what is in the doSelect() function as parameter? How you get the field value that user have entered?

I answering because I have problem with getting field value user have entered:
How can I get the value (from the field) that user have entered?
I want to get it after clicking some button. On the clicking this button in the Display Option I can save the field's "Input" (e.g. 'testField in $file') in some other variable (e.g. '$G.testVar') but this value will be the last recorded value, not the value user have entered by hands!