On 2/26/07, Henry Baragar <[EMAIL PROTECTED]> wrote:
Note that this creates a confirmation pop-up (which we like because we believe
that a link should not have side effects). Also, I was not sure if you were
referring to Jifty actions (not used here) or using a more generic
definition, when you mentioned "actions".
I do mean Jifty actions, which I like (among other reasons) because I
get CRUD actions for free from my Model definitions.
My question is: is there a better way to do this?
> I've hacked together something crude where I tangent to a page which
> contains $a = new_action; $a->run; jifty->web->return, which works,
You might like the hack that I mentioned earlier. I use YAML to
serialize the arguments to the action, which is not perfectly robust,
but far from the worst one can do. There are two templates,
'action_link', and 'do_action'.
do_action:
<%init>
use Jifty::YAML;
my $args = {}; %{$args} = %ARGS;
if (exists ($args->{'args'})) {
$args->{'args'} =~ s/\,/\n/g;
$args->{'args'} = YAML::Load ($args->{'args'});
}
if (exists ($args->{'class'})) {
my $action;
if (exists ($args->{'args'})) {
$action = Jifty->web->new_action (class => $args->{'class'},
arguments => $args->{'args'}
);
} else {
$action = Jifty->web->new_action (class => $args->{'class'});
}
$action->run () if ($action);
}
if (exists ((Jifty->web->caller ())->{'path'})) {
Jifty->web->return;
} else {
Jifty->web->goto (url => '/');
}
</%init>
and action_link:
<%args>
$class
$label => $class
$args => undef
</%args>
<span class="<% "action-" . lc ($class) %>">
% use Jifty::YAML;
% my $params = { class => $class };
% if (defined ($args) and ref ($args)) {
% $params->{'args'} = Jifty::YAML::Dump ($args);
% $params->{'args'} =~ s/\n/\,/g;
% }
<% Jifty->web->tangent (url => "/do_action",
label => $label,
parameters => $params) %>
</span>
Then, from any other template, if I wish to have a link which takes an
action, all I have to type is this:
<& /action_link, class => "DeleteFriend", label => "remove?", args =>
{'id' => $friend->id} &>
or the simpler
<& /action_link, class => "Logout", label => "logout?" &>
You might find this somewhat useful as it uses a continuation so that
after the action is run, it returns to the page that contained the
action_link. Contrast that with needing to specify 'original_page' in
your Dispatcher.
But still... The problem with my solution is that all those redirects
ruin the state on the calling page, in particular the arguments to my
pageregions. Also, I think there's got to be a better way.
: )
Joshua
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