I wish to have a template render some data which needs to be passed back to the caller of render. For example, I am using a template to generate emails, for which I need a subject as well as the body. I would like to do something like this:
app.render( 'email', function(err,html) {
subject = ?get from template somehow?
postEmail( subject, html, user_addr );
});
That is, I wish for the template to decide what should appear in the subject (preferably without creating another template just for the subject line).
Not sure if you figured this out yet, but you can send back information from Jade by altering the value of the arguments.
email.jade:
- subject.text = "Hi " + user + ", welcome to the site.";
| Subject: #{subject.text}
app.js:
args = { user: 'Test User', subject: { text: '' } };
app.render( 'email', args, function(err,html) {
subject = args.subject.text;
postEmail( subject, html, user_addr );
});
It has to be a nested object (i.e. subject.text instead of simply subject), otherwise you won't get the modified data. Although, if you call templates created with jade.compile() directly, then the nesting appears to be unnecessary. I think express must make a shallow copy of the arguments before sending it to the view engine.