On 4/24/06, Malcolm Tredinnick <[EMAIL PROTECTED]> wrote:
>
> Hi Sam,
>
> On Mon, 2006-04-24 at 15:52 -0400, Sam Tran wrote:
> > Hi All,
> >
> > I have the following list of tuples:
> > [(0, 'Jenna'),
> > (1, 'Tom'),
> > (1, 'Paul'),
> > (2, 'Cathy')]
> >
> > I want to create a table with as many row as the number of tuples (one
> > row for each tuple). The first element of each tuple is the number of
> > tabulations or empty cells to put in each row. The second element is
> > the string to write in the last cell of the row. So the resulting
> > table would look like this:
> >
> > | Jenna |
> > | | Tom |
> > | | Paul |
> > | | | Cathy |
>
> I cannot think of any way to do this directly in templates. You need to
> preprocess the data slightly. Initially, I came up with an example that
> converted your prefix numbers into lists of the same length and then
> iterated over those lists to insert </td><td> pairs. Something like
>
> converted_data = [([None] * d[0], d[1]) for d in data]
>
> in the view and
>
> {% for entry in data %}
> <tr><td>
> {% for padding in entry.0 %}
> </td><td>
> {% endfor %}
> {{ entry.1 }}</td></tr>
> {% endfor %}
>
> Then I realised this was stupid and if I was going to preprocess the
> data, I might as well just give it the right string initially. So
>
> converted_data = [('</td><td>' * d[0], d[1]) for d in data]
>
> in the view and
>
> {% for entry in data %}
> <tr><td>{{ entry.0 }}{{entry.1 }}</td></tr>
> {% endfor %}
>
> in the template.
>
> If it were possible to create a loop from a number (equivalent of
> Python's range() function), rather than iterating over a sequence, the
> first solution would work without pre-processing. But I can't say that I
> dislike the fact you cannot do this. It forces complexity out the
> templates: the temptation to use the templates as a computation engine
> would become too great otherwise.
>
Malcom,
I initially tried to create a loop with range() as you described. I
wanted to avoid doing some 'template' pre-processing in the view file.
But apparently there is no way to do otherwise. I will definitely try
your solution tomorrow.
Your help is greatly appreciated.
Best regards,
Sam
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