Dynamic page refreash
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lmcadory
Aug 2, 2011, 1:22:46 PM8/2/11
to Django users
I'm having this problem, my web design knowledge is limited and I'm
having a hard time searching for the solution (if there is one)
The problem is this:
I have a view that counts the number of lines in a file. It then
pushes that result to an html page. What I want it to do is when that
line count changes when I press the refresh button on the browser it
displays the new number. Right now I have to reload the server to
display the results.
I, if I'm asking the question correctly, is there a way I can tell the
view to run again and republish the results?
having a hard time searching for the solution (if there is one)
The problem is this:
I have a view that counts the number of lines in a file. It then
pushes that result to an html page. What I want it to do is when that
line count changes when I press the refresh button on the browser it
displays the new number. Right now I have to reload the server to
display the results.
I, if I'm asking the question correctly, is there a way I can tell the
view to run again and republish the results?
bruno desthuilliers
Aug 2, 2011, 1:37:35 PM8/2/11
to Django users
On 2 août, 19:22, lmcadory <ljmcad...@gmail.com> wrote:
> I'm having this problem, my web design knowledge is limited and I'm
> having a hard time searching for the solution (if there is one)
>
> The problem is this:
>
> I have a view that counts the number of lines in a file. It then
> pushes that result to an html page.
Uh ? What does that mean exactly ? (the "pushes that result to an html
> I'm having this problem, my web design knowledge is limited and I'm
> having a hard time searching for the solution (if there is one)
>
> The problem is this:
>
> I have a view that counts the number of lines in a file. It then
> pushes that result to an html page.
page" part)
> What I want it to do is when that
> line count changes when I press the refresh button on the browser it
> displays the new number. Right now I have to reload the server to
> display the results.
the code that computes the lines count at the module top-level or
something alike), but it's hard to tell exactly without looking at
your code.
>
> I, if I'm asking the question correctly, is there a way I can tell the
> view to run again and republish the results?
url.
lmcadory
Aug 2, 2011, 1:55:49 PM8/2/11
to Django users
Here is my code, minus all the import statements.
file = 'someFile.txt'
infile = open(file, 'r')
def test_results(request):
expectedResults = 10
lines = infile.readlines()
lineCount = len(lines)
if lineCount == expectedResults:
p = 'Passed'
return render_to_response('results.html', {'results':p}
else:
f = 'Fail'
return render_to_response('results.html', {'results':f}
#HTML
....
<body>
The test {{ results }}.
</body>
....
file = 'someFile.txt'
infile = open(file, 'r')
def test_results(request):
expectedResults = 10
lines = infile.readlines()
lineCount = len(lines)
if lineCount == expectedResults:
p = 'Passed'
return render_to_response('results.html', {'results':p}
else:
f = 'Fail'
return render_to_response('results.html', {'results':f}
#HTML
....
<body>
The test {{ results }}.
</body>
....
lmcadory
Aug 2, 2011, 1:57:16 PM8/2/11
to Django users
lmcadory
Aug 2, 2011, 1:58:42 PM8/2/11
to Django users
There should be closing brackets on the ends of the 2
render_to_response statements.
render_to_response statements.
lmcadory
Aug 2, 2011, 3:43:25 PM8/2/11
to django...@googlegroups.com
I fixed it. I needed to remove --noreload
dirleyrls
Aug 2, 2011, 4:54:38 PM8/2/11
to Django users
I think you should open, count the lines of and close the file inside
the view. The view code is executed once per request. I think that
somethink like this will solve your problems:
def test_results(request):
infile = open('someFile.txt', 'r')
# ... count the lines of the file
infile.close()
the view. The view code is executed once per request. I think that
somethink like this will solve your problems:
def test_results(request):
infile = open('someFile.txt', 'r')
# ... count the lines of the file
infile.close()
return render_to_response('results.html', {'results':f}
bruno desthuilliers
Aug 2, 2011, 5:57:26 PM8/2/11
to Django users
This doesn't fix anything - try to run it using anything but the test
server and you'll have the same problem (or even worse in a multi-
threading or multi-process environment).
You actually have to move the first two lines :
file = 'someFile.txt'
infile = open(file, 'r')
within your view function. Else the file is only opened when your
view module is imported, not when the view function is called.
Also, beware that if you don't use an absolute path for the file, it
will be looked for in the "current working directory" whatever it is
at that time (warning: the "current working directory" is NOT your
app's or project directory - it can be absolutely any possible
directory on your filesystem).
server and you'll have the same problem (or even worse in a multi-
threading or multi-process environment).
You actually have to move the first two lines :
file = 'someFile.txt'
infile = open(file, 'r')
view module is imported, not when the view function is called.
Also, beware that if you don't use an absolute path for the file, it
will be looked for in the "current working directory" whatever it is
at that time (warning: the "current working directory" is NOT your
app's or project directory - it can be absolutely any possible
directory on your filesystem).
H.İbrahim Yılmaz
Aug 2, 2011, 5:58:04 PM8/2/11
to django...@googlegroups.com
http://www.quackit.com/javascript/javascript_refresh_page.cfm
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2011/8/2 lmcadory <ljmc...@gmail.com>
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