possibly dependant on how long your process takes, you could simplify
things by using "on 'finish'" to run your process after rendering a
response. Then same deal with recording progress to db etc..
sub refresh {
my $self = shift;
$self->on(finish => sub{
my $ctrl = shift;
$total = $self->modules->nr_of_modules();
...
});
$self->render()
}
Jason Galea
lecstor.com
ezyapp.com
On Wed, Apr 1, 2015 at 9:44 PM, Jason Galea <[email protected]> wrote:
> Hi Johan,
>
> I don't think after_build_tx is what you want. It looks like that is for
> hooking into the request transaction and getting progress updates from it.
>
> I think you would want to background your process in some way (fork or job
> queue maybe.. minion?) and return your page response. The background
> process should then store it's progress periodically in a database or
> similar. From the page you then poll the server via ajax to another
> endpoint that can read and return the progress value and update the
> progress bar in the page.
>
> cheers,
>
> Jason
>
>
>
>
> Jason Galea
> lecstor.com
> ezyapp.com
>
> On Sat, Mar 28, 2015 at 11:23 PM, Johan De Graeve <[email protected]>
> wrote:
>
>> Hi everybody,
>>
>> Could somebody provide me please with a simple example to update a
>> (bootstrap) progress bar when performing a long lasting function.
>>
>> I read that maybe the after_build_tx hook is the answer to my questions.
>> Just not sure how to use is.
>>
>> after_build_tx <http://mojolicio.us/perldoc/Mojolicious#toc>
>>
>> Emitted right after the transaction is built and before the HTTP request
>> gets parsed.
>>
>> $app->hook(after_build_tx => sub {
>> my ($tx, $app) = @_;
>> ...});
>>
>> This is a very powerful hook and should not be used lightly, it makes
>> some rather advanced features such as upload *progress bars* possible.
>> Note that this hook will not work for embedded applications, because only
>> the host application gets to build transactions. (Passed the transaction
>> and application object)
>> I wrote a controller which a refresh function which takes quite a while
>>
>> sub refresh {
>> my $self = shift;
>>
>> $total = $self->modules->nr_of_modules();
>> foreach my $environment (@environments) {
>> my @modules = $self->modules->modules_in_env($environment);
>> foreach my $module (@modules) {
>> $self->modules->add_module(environment => $environment,
>> module => $module);
>> $done++;
>> $progress = int($done / $total)*100;
>> $self->render( progress => $progress );
>> }
>> }
>> }
>>
>> And would like to pass the $progress to my template and update the
>> progress bar.
>>
>>
>> <div class="progress">
>> <div class="progress-bar" role="progressbar" aria-valuenow="<%= $progress
>> =>" aria-valuemin="0" aria-valuemax="100" style="width: <%= $progress %>%;">
>> <%= $progress %>%
>> </div></div>
>>
>> All help will be very much appreciated.
>>
>> Thx,
>> Johan
>>
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>
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