我对django中的过滤数据有一些问题，我希望过滤器选择选项 pagi 将显示数据时间从00:00到10:00 ，如果选择选项 siang 将显示数据从10:01到18:00 ，如果选择选项 malam ，它将从18:00显示数据到23:59 ， 我有这样的代码模板/ index.html：
<!DOCTYPE html>
<head>
<html>
<meta charset="utf-8">
<title>This Is Latihan</title>
</head>
<body>
<div id="form">
<form action="{% url insert %}" method="POST">{% csrf_token %}
Nama Maskapai : <input type="text" name="airline" id="airline" value="{{ airline }}"></input> </br>
Waktu Berangkat : <input type="text" name="time" id="time" value="{{ time }}"></input> </br>
<input type="submit" name="save" value="save">
</form>
</div>
<table id="table" border="1">
<tr>
<th align="center" width=30px>No.</th>
<th align="center" width=150px>Maskapai</th>
<th align="center" width=70px>Waktu</th>
<th align="center" width=230px colspan="4">Action</th>
</tr>
{% for i in maskapai %}
<tr>
<td align="center" width=30px>{{ forloop.counter }}</td>
<td width=150px>{{ i.airline }}</td>
<td width=70px> {{ i.time }}</td>
<form action="{% url action %}" method="POST">{% csrf_token %}
<td width=230px colspan="4">
<input type="hidden" name="index" value= "{{ forloop.counter0 }}" />
<input type="hidden" name="time" value= "{{ i.time }}" />
<input type="submit" name="delete" value="delete">
<input type="submit" name="up" value="up">
<input type="submit" name="down" value="down">
</td>
</form>
</tr>
{% endfor %}
</table>
<form action="{% url filter %}" method="POST">{% csrf_token %}
<select name="maskap">
<option value="all">-Pilih Maskapai-</option>
{% for pil in pilihan %}
<option value="{{ pil }}"> {{ pil }} </option>
{% endfor %}
</select>
<select name="waktu">
<option value="allwak"> -Pilih Waktu- </option>
<option value="pagi">pagi</option>
<option value="siang">siang</option>
<option value="malam">malam</option>
</select>
<input type="submit" name="name" value="FILTER">
</form>
<br>
</body>
</html>
这是我的观点代码：
from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render_to_response
from django.template import RequestContext
import time
maskapai_glob = []
pilihan_glob = []
def index(request):
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
def insert(request):
if request.POST:
airline = str(request.POST.get('airline'))
times = str(request.POST.get('time'))
try:
# Diisi ReGex Jam
tim = time.strptime(times,'%H:%M')
# time = "%s:%s" % (tim.hour, tim.minute)
insert_data = {'airline':airline, 'time':times}
except Exception, err:
print err
return HttpResponse("""<h2>Jam Salah</h2><button onClick='window.history.back()'>back</button>""")
maskapai = [i for i in maskapai_glob]
pilihan = [i for i in pilihan_glob]
maskapai.append(insert_data)
maskapai_glob.append(insert_data)
if len(pilihan) == 0:
pilihan.append(airline)
pilihan_glob.append(airline)
elif len(pilihan) >= 1:
if airline in pilihan:
pass
else:
pilihan.append(airline)
pilihan_glob.append(airline)
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
def action(request):
if request.POST:
if request.POST.get('delete'):
val_maskapai = []
index = int(request.POST.get('index'))
airline = str(request.POST.get('airline'))
del maskapai_glob[index]
maskapai = [i for i in maskapai_glob]
pilihan = [i for i in pilihan_glob]
for i in range(len(maskapai_glob)):
val_maskapai.append(maskapai[i]['airline'])
for i in pilihan_glob:
if i in val_maskapai:
pass
else:
pilihan_glob.remove(i)
pilihan.remove(i)
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
elif request.POST.get('up'):
index_up = int(request.POST.get('index'))
index_down = index_up - 1
data_one = maskapai_glob[index_down]
data_two = maskapai_glob[index_up]
if index_up == 0:
pass
else:
maskapai_glob[index_down] = data_two
maskapai_glob[index_up] = data_one
maskapai = [i for i in maskapai_glob]
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
elif request.POST.get('down'):
index_down = int(request.POST.get('index')) # data can be down
last_index = len(maskapai_glob) - 1
if index_down == last_index:
pass
else:
index_up = index_down + 1 # data can be up
data_one = maskapai_glob[index_down] # data down
data_two = maskapai_glob[index_up] # data up
maskapai_glob[index_down] = data_two
maskapai_glob[index_up] = data_one
maskapai = [i for i in maskapai_glob]
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
def filter(request):
if request.POST:
getmask = request.POST.get('maskap')
getwaktu = request.POST.get('waktu')
if getmask:
if getmask == 'all':
maskapai = [i for i in maskapai_glob]
pilihan = [i for i in pilihan_glob]
#Mulai dari sini
if getwaktu == "pagi":
maskapai = [] #maskapai
pilihan = [i for i in pilihan_glob] #pilihan option
data_pilihan = request.POST.getlist(str('waktu')) #mengambil data dari select (maskap)
list_pilihan = [str(i) for i in data_pilihan] #list pilihan dari data maskap
for i in range(len(maskapai_glob)):
if 'pagi' in list_pilihan:
#maskapai.append(maskapai_glob[i])
return HttpResponse("test");
#return HttpResponse("test");
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
#Sampai sini
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
else:
maskapai = [] #maskapai
pilihan = [i for i in pilihan_glob] #pilihan option
data_pilihan = request.POST.getlist(str('maskap')) #mengambil data dari select (maskap)
list_pilihan = [str(i) for i in data_pilihan] #list pilihan dari data maskap
for i in range(len(maskapai_glob)):
if maskapai_glob[i]['airline'] in list_pilihan:
maskapai.append(maskapai_glob[i])
return render_to_response('index.html', locals(), context_instance=RequestContext(request))
方法过滤器是过滤功能。
答案 0 :(得分：1)
您目前正在使用全局变量而不是Django的ORM - 这是一种不好的做法！按照tutorial学习如何使用Django创建数据库模型。 假设您正在使用Django的ORM，请尝试：
FILTERS = {
'pagi': (None, "10:00"),
'siang': ("10:00", "18:00"),
'malam': ("18:00", None),
}
a, b = FILTERS[request.POST['waktu']]
然后查询您的数据库，假设您的模型date中有DateField time和TimeField MyModel：
qs = MyModel.objects.filter(date=x)
if a:
qs = qs.fiter(time__gte=a)
if b:
qs = qs.fiter(time__lt=b)