core modification

[evantro]

hello

Is it possible to overload a core element? if so could someone give me some clue to do it, or the name of any module that will do something similar ?

for example, I'd like to add the possibility to set an onclick event on the submit button of a form

Thank's in advance.

[pbrooks]

Hi Eric,
Most core modifications are possible, but if you give some detailed information on what you're trying to achieve then we can better help.

[evantro]

Thank's for your help.

As I said, I'd like to extend the "capabilities" of the submit button of the Form module, with an other module in order to add an "onclick" tag with some parameters that I would have defined before on the back end.

So I don't want to modify core files but hook them to "plug" an add-on.

Regards

[ga.n]

Are you talking about the frontend or the backend?

I can not understand if you want to know how to load a javascript file or if you are looking for something else

[evantro]

i'd like to add from the back end parameters in order to generate some more parameters during the creation of the form in the front end.

how could I do to modify the generate function of the FormSubmit, without touching the original file?

Thank's

[ga.n]

you can write a custom "form field" widget

a good starting point can be taking a look at some extensions that provide "form fields"

http://www.contao.org/extension-list...m%20field.html

[evantro]

Thank's I'll have look.