我需要在循环中进行计数器递增。我看过django for.counter,但是不幸的是,我的增量并没有在循环的每次迭代中完全发生。那么,有什么办法可以在django模板中实现变量的增量,而又不用费力在代码中实现一个新对象而无需增加增量呢?
在下面的代码中,我正在写{{ count = 0 }}
,{{ count += 1 }}
行,仅用于说明目的。我知道这行不通。以下是我的模板的非常简化的形式:
<div class="jumbotron slotgroup slotavailable mb-1 mt-5" id="jumbo_week_avail">
<div class="slot-header" role="alert">
Headertext
</div>
{% if weeklyslotsav %}
{% for day,daynum in weekzip %}
{{ count = 0 }}
{% if daynum in weeklyslotsav.day %}
{% for weekslotav in weeklyslotsav %}
{% if weekslotav.day == daynum %}
<div class="row row_week_avail{{ weekslotav.day }}" id="row_week_avail{{ weekslotav.day }}_{{ count }}">
</div>
{{ count += 1 }}
{% endif}
{% endfor %}
{% else %}
<div class="row row_week_avail{{ daynum }}" id="row_week_avail{{ daynum }}_0">
</div>
{% endif %}
{% endfor %}
{% else %}
{% for weekday, weeknum in weekzip %}
<div class="row row_week_avail{{ weeknum }}" id="row_week_avail{{ weeknum }}_0">
</div>
{% endfor %}
{% endif %}
</div>
以下是我的观点:
def edit_doctorslots(request, cliniclabel, doctor_id):
doctor_id=int(doctor_id)
doc = get_object_or_404(doctor, docid=doctor_id)
cl = Clinic.objects.get(label=cliniclabel)
print("Clinic name", cl.name)
regularslotsav = ''
try:
regularslotsav = Timeslots.objects.filter(clinic =cl, doctor =doc, available =True)
except:
pass
regularslotsbr = ''
try:
regularslotsbr = Timeslots.objects.filter(clinic =cl, doctor =doc, available =False)
except:
pass
weekavzip = ''
try:
weeklyslotsav = Weekdays.objects.filter(clinic =cl, doctor =doc, available =True)
weekav = range(0, len(weeklyslotsav))
weekavzip = list(zip(weeklyslotsav, weekav))
except:
pass
weeklyslotsbr = ''
try:
weeklyslotsbr = Weekdays.objects.filter(clinic =cl, doctor =doc, available =False)
except:
pass
formslot = SlotForm()
formspecialdays = SpecialdaysForm()
formweekdays = WeekdaysForm()
weekdays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
weekdaynum = [0,1,2,3,4,5,6]
weekzip = list(zip(weekdays, weekdaynum))
newweekzip = weekzip
return render(request, 'clinic/editslots0.html', {'rnd_num': randomnumber(), 'clinic': cl, 'doctor': doc, 'formslot': formslot, 'formspecialdays': formspecialdays, 'formweekdays': formweekdays, 'weekzip': weekzip, 'newweekzip': newweekzip, 'regav': regularslotsav, 'regbr': regularslotsbr, 'weekav': weekavzip, 'weekbr': weeklyslotsbr, 'weeklyslotsav': weeklyslotsav })
我已经看到许多关于SO的类似问题。但是,在所有这些文章中,我都看到有人介绍for.counter
。但这不适合我的目的。
答案 0 :(得分:0)
您可以使用with
标记将模板中的变量设置为-
{% with count=0 %}
{{ count}}
...do other stuffs
{% endwith %}
对于数学,您可以像
一样使用django math filters {{ count|add:"1" }}
您可以同时使用两者进行编码。
有关在Django模板中设置变量的更多信息-How to set a value of a variable inside a template code?
以及在django中使用数学-How to do math in a Django template?
希望这对您有所帮助。