On 2 sep, 19:34, Matt Berg <[EMAIL PROTECTED]> wrote:
> Still new to django and python and have been struggling with the
> following.
>
> Basically, I want to pass the following dict object to a django
> template.
>
> def crop_info(season,crops):
> ci = {}
> cd = {}
Since you rebind cd later in the for loop, this first binding is
useless.
> dap_kg_dollar = 0
> urea_kg_dollar = 0
> seed_local_dollar = 0
> seed_improved_dollar = 0
None of these binding is used in the remaining code. Useless too.
> ci['hectares'] = 0
> for c in crops:
> cd = {}
> ci['hectares'] = ci['hectares'] + c.hectares
Use augmented assignement instead:
ci['hectares'] += c.hectares
or better yet, use a local binding and store the result in ci after
the loop, this will save you len(crops) get/set access to ci.
> cd['dap_kg_dollar'] = (season.DAP_local_fiftykg_price /
> season.forex_input) / 50
> cd['urea_kg_dollar'] = (season.urea_local_fiftykg_price /
> season.forex_input) / 50
> cd['seed_local_dollar'] = c.local_seed_price /
> season.forex_input
> cd['seed_improved_dollar'] = c.improved_seed_price /
> season.forex_input
> cd['total'] = (c.seed * cd['seed_improved_dollar']) +
> (cd['urea_kg_dollar'] * c.urea)
> ci[c.id] = cd
> return ci
Looks like a lot of business logic for a view. Shouldn't this code
live somewhere in your models instead ?
> In my template, I want to be able to iterate through the crops with
> info like this:
>
> {{ ci.[crop.id].total }}
Where does this crop.id comes from ?
> This syntax does not work in the templates. If I put in for example,
> ci.1.total I get the right result. What's the proper way to do this
> within django.
Not enough information, sorry.
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