Hi,
As I am no expert web programmer I thought I'd better ask the experts if
there is a simpler or better solution to my problem than the one I am
thinking of. (using TurboGears)
The problem
-----------
I have a form. Ok. you can submit, validate it etc.
Now I have a link on that form to another page.
What I want is that the form gets automatically submitted and validated
before the browser follows the link. If the validation has errors the
link should not be followed.
My solution
-----------
1. client side solution
First I thought I just make a little javascript function like this:
function xy(url) {
document.form.s ubmit();
parent.location =url;
}
The problem is that submit works ansynchronisly. I do not get a return
code to decide if to follow the url or not. Furthermore the form does
not get submitted if there is the line parent.location =url; .
2. server side solution
I thought of including a hidden field and include directives for my
controller method to raise the redirection if no validation errors are
there.
<a href="#" onClick="xy('/somewhere')"></a>
function xy(url) {
document.form.h iddenfield.valu e = "redirect_t o: " + url;
document.form.s ubmit();
}
@expose
def mycontroller(se lf, *args, **kwargs):
#do the usual saving stuff
if hasattr(kwargs, 'hiddenfield'):
#parse the JSON or mini-langage and do the redirection, when no
#validation errors
As there might be more other directives necessery for client-server
communciation I thought of setting the hiddenfield value to JSON or a
self made mini-language and parse this in the controller.
Is this a good solution?
Are there any other options?
--
Greg
As I am no expert web programmer I thought I'd better ask the experts if
there is a simpler or better solution to my problem than the one I am
thinking of. (using TurboGears)
The problem
-----------
I have a form. Ok. you can submit, validate it etc.
Now I have a link on that form to another page.
What I want is that the form gets automatically submitted and validated
before the browser follows the link. If the validation has errors the
link should not be followed.
My solution
-----------
1. client side solution
First I thought I just make a little javascript function like this:
function xy(url) {
document.form.s ubmit();
parent.location =url;
}
The problem is that submit works ansynchronisly. I do not get a return
code to decide if to follow the url or not. Furthermore the form does
not get submitted if there is the line parent.location =url; .
2. server side solution
I thought of including a hidden field and include directives for my
controller method to raise the redirection if no validation errors are
there.
<a href="#" onClick="xy('/somewhere')"></a>
function xy(url) {
document.form.h iddenfield.valu e = "redirect_t o: " + url;
document.form.s ubmit();
}
@expose
def mycontroller(se lf, *args, **kwargs):
#do the usual saving stuff
if hasattr(kwargs, 'hiddenfield'):
#parse the JSON or mini-langage and do the redirection, when no
#validation errors
As there might be more other directives necessery for client-server
communciation I thought of setting the hiddenfield value to JSON or a
self made mini-language and parse this in the controller.
Is this a good solution?
Are there any other options?
--
Greg
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