I am trying to make a search page that searches for model objects using three fields corresponding to different pieces of data. Here is my code below:
models.py
class Schedules(models.Model):
course_name = models.CharField(max_length=128, choices=COURSE_NAME_CHOICES, default='a-plus')
start_date = models.DateField(auto_now=False, auto_now_add=False, default=datetime.date.today)
instructor = models.CharField(max_length=128, choices=INSTRUCTOR_CHOICES, default='adewale')
views.py
def search_Schedule(request):
context_dict = {}
if request.method == 'POST':
query1 = request.POST['course_name_search']
query2 = request.POST['start_date_search']
query3 = request.POST['instructor_search']
if query1:
results = Schedules.objects.filter(course_name__icontains=query1)
if query2:
results = results.filter(start_time=query2)
if query3:
results = results.filter(instructor__icontains=query3)
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1 + ", " + query2 + ", and " + query3
else:
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1 + " and " + query2
elif query3:
results = results.filter(start_time__icontains=query3)
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1 + " and " + query3
else:
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1
elif query2:
results = Schedules.objects.filter(start_time=query2)
if query3:
results = results.filter(instructor__icontains=query3)
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query2 + " and " + query3
else:
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query2
elif query3:
results = Schedules.objects.filter(instructor__icontains=query3)
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query3
return render(request, "schedule/search_schedule.html", context_dict)
search_schedule.html
{% block main_content %}
<form method="post" action="">
{% csrf_token %}
<label for="course_name_search">Course Name:</label>
<input type="text" name="course_name_search" id="course_name_search">
<label for="start_date_search">Start Date:</label>
<input type="datetime" name="start_date_search" id="start_date_search">
<label for="instructor_search">Instructor:</label>
<input type="text" name="instructor_search" id="instructor_search"><br>
<input type="submit" name="submit">
</form>
<div id="result_panel">
{% if table %}
{% render_table table %}
{% else %}
{% if no_results %}
No results returned for <q>{{ no_results }}</q>
{% else %}
Please enter a search
{% endif %}
{% endif %}
{% endblock %}
For some reason, the search will work if I type in the course name field OR the instructor field, but won't work if I type in more than one field. And for some reason, the start date field will not work period, no matter how I type the date. Can somebody possibly help me with the correct way to type the code? Thank you.
try this if it works.
def search_Schedule(request):
context_dict = {}
if request.method == 'POST':
query1 = request.POST.get('course_name_search',None)
query2 = request.POST.get('start_date_search',None)
query3 = request.POST.get('instructor_search',None)
if query1:
results = Schedules.objects.filter(course_name__icontains=query1)
if query2:
results = results.filter(start_time=datetime.datetime.strptime(query2, "%d%m%Y").date())
if query3:
results = results.filter(instructor__icontains=query3)
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1 + ", " + query2 + ", and " + query3
else:
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1 + " and " + query2
elif query3:
results = results.filter(instructor__icontains=query3) #changed this filter condition
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1 + " and " + query3
else:
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query1
elif query2:
results = Schedules.objects.filter(start_time=datetime.datetime.strptime(query2, "%d%m%Y").date())
if query3:
results = results.filter(instructor__icontains=query3)
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query2 + " and " + query3
else:
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query2
elif query3:
results = Schedules.objects.filter(instructor__icontains=query3)
table = ScheduleTable(results)
if results.count():
context_dict['table'] = table
else:
context_dict['no_results'] = query3
return render(request, "schedule/search_schedule.html", context_dict)
You could try a drill-down method for your filtering to minimize your if statements:
course_name_search = request.POST.get('course_name_search', None)
start_date_search = request.POST.get('start_date_search', None)
instructor_search = request.POST.get('instructor_search', None)
queryset = Schedules.objects.all()
if course_name_search:
queryset = queryset.filter(course_name__icontains=course_name_search)
if start_date_search:
queryset = queryset.filter(start_date=start_date_search)
if instructor_search:
queryset = queryset.filter(instructor__icontains=instructor_search)
# if none of the search params were filled in then return none
if not course_name_search and not start_date_search and not instructor_search:
queryset = Schedules.objects.none()
But a few caveats here, and something to help your issue with the start dates, since you are reading the POST data directly you'll need to convert your start_date_search into an actual date before you query.
The other thing that will help you is it might be better to use a GET instead of a POST, which you can then read in the template to fill in the chosen values that you now fill into the 'no_results'.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.