Re: [tornado] some blank line in template.
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Russ Weeks
Jul 26, 2012, 12:50:23 PM7/26/12
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Hi, Simon,
Does your template file end with ".html" or ".js"? If so, I think Tornado will compress whitespace automatically.
-Russ
On Thu, Jul 26, 2012 at 8:50 AM, simon <hap...@gmail.com> wrote:
The tornado's template make many blank line ,especially in the iteration.How to do better.
simon
Jul 26, 2012, 1:19:23 PM7/26/12
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Hi Russ
My template file end is with ".html".
I can't delete all end of line in the code.
Don't you have this problem?
This tornado's version is 2.1.
simon
simon
Jul 26, 2012, 2:05:34 PM7/26/12
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Hi,guys
I have a test.this prove my problem.
this code:
//===========================================
import tornado.ioloop
import tornado.web
import tornado.web
class MainHandler(tornado.web.RequestHandler):
def get(self):
self.render("test.html")
def get(self):
self.render("test.html")
application=tornado.web.Application([
(r"/",MainHandler),
])
if __name__ == "__main__":
application.listen(8000)
tornado.ioloop.IOLoop.instance().start()
(r"/",MainHandler),
])
if __name__ == "__main__":
application.listen(8000)
tornado.ioloop.IOLoop.instance().start()
//===========================================
the html file "test.html"
//===========================================
<html>
<head>
</head>
<body>
test1
test2
{%for i in range(0,10)%}
{%if i%2==0 %}
<br>test
{%end%}
{%end%}
</body>
</html>
<head>
</head>
<body>
test1
test2
{%for i in range(0,10)%}
{%if i%2==0 %}
<br>test
{%end%}
{%end%}
</body>
</html>
//===========================================
the Result:
//============================================
| <html> | |
| <head> | |
| </head> | |
| <body> | |
| test1 | |
| test2 | |
| <br>test | |
| <br>test | |
| <br>test | |
| <br>test | |
| <br>test | |
| </body> | |
</html> //============================================= |
Lorenzo Bolla
Jul 27, 2012, 5:45:30 AM7/27/12
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This is a feature! ;-)
The fact is that the template syntax, although it resemble Python's, does not actually rely on newlines and indentation to define blocks. Therefore, any newline at the end of, let's say, {% for... %} or {% if %} is still considered a valid character and printed in the result.
To achieve what you want (but why do you want it, anyway?), you can do this:
<html>
<head>
</head>
<body>
test1
test2{%for i in range(0,10)%}{%if i%2==0 %}
<br>test{%end%}{%end%}
</body>
</html>
L.
ushuz
Sep 14, 2013, 3:58:25 AM9/14/13
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Could tornado offer an option about this? Like `lstrip_blocks` or `trim_blocks` in Jinja2.
Change my templates to eliminate empty lines will make them look creepy.
Readability counts, right?
Ben Darnell
Sep 14, 2013, 11:54:07 AM9/14/13
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On Sat, Sep 14, 2013 at 3:58 AM, ushuz <hszq...@gmail.com> wrote:
Could tornado offer an option about this? Like `lstrip_blocks` or `trim_blocks` in Jinja2.Change my templates to eliminate empty lines will make them look creepy.Readability counts, right?
Readability of the templates definitely counts, but why do you care about empty lines in the generated output? My feeling is that when whitespace actually matters (e.g. a <pre> block, not just lots of unsightly empty space) it's better to keep the rules simple and let the templates be a little ugly than to have more complicated rules about which newlines pass through and which ones don't. See the discussion in
-Ben
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