使用jQuery在django中实现相互依赖下拉菜单的最简单方法
有谁能给出如何使用jQuery在django中实现相互依赖的下拉菜单的基本示例吗? 我试过了,但只有一个下拉菜单 Models.py使用jQuery在django中实现相互依赖下拉菜单的最简单方法,jquery,python,django,Jquery,Python,Django,有谁能给出如何使用jQuery在django中实现相互依赖的下拉菜单的基本示例吗? 我试过了,但只有一个下拉菜单 Models.py def get_photo_storage_path(photo_obj, filename): random_string = ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(10)) storage_path = 'img/pro
def get_photo_storage_path(photo_obj, filename):
random_string = ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(10))
storage_path = 'img/profile/' + random_string + '_' + filename
return storage_path
class CompanyMake(models.Model):
company_name = models.CharField(max_length = 100)
def __unicode__(self):
return self.company_name
class MakeModel(models.Model):
company = models.ForeignKey(CompanyMake)
model_name = models.CharField(max_length = 100)
def __unicode__(self):
return self.model_name
class ModelParts(models.Model):
company = models.ForeignKey(CompanyMake)
model = models.ForeignKey(MakeModel)
part_name = models.CharField(max_length = 100)
def __unicode__(self):
return self.part_name
class ModelYear(models.Model):
company = models.ForeignKey(CompanyMake)
model = models.ForeignKey(MakeModel)
year_value = models.IntegerField()
class UserProfile(models.Model):
user = models.OneToOneField(User,primary_key=True)
#image = models.ImageField(upload_to=get_photo_storage_path, null = True, blank=True)
part = models.ForeignKey(ModelParts,null = True, blank=True)
phone_number = models.CharField( max_length = 10,verbose_name="Mobile Number 10 digits",null = True, blank=True, default=None)
views.py是
def home(request):
cm = CompanyMake.objects.all()
for a in cm:
print a
mm = a.makemodel_set.all()
for b in mm:
print b
mp = b.modelparts_set.all()
for c in mp:
print c
my = ModelYear.objects.all()
print my
return render(request,'choice.html',{'cm':cm,'mm':mm, 'mp':mp, 'my':my})
forms.py是
class UserProfileForm(forms.ModelForm):
class Meta:
model = UserProfile
exclude=('user')
choice.html是
<select name="car">
{% for car in cm %}
<option value="{{car.key}}" selected="selected">{{car.company_name}}</option>
{% endfor %}
</select>
<br/>
<select name="car">
{% for model in mm %}
<option value="{{model.key}}" selected="selected">{{model.model_name}}</option>
{% endfor %}
</select>
{cm%中的汽车为%1}
{{car.company{u name}}
{%endfor%}
{mm%中模型的%s}
{{model.model_name}
{%endfor%}
在这里,我试图获得汽车模型和零件的相互依赖的下拉列表。最简单的方法是通过第一个下拉菜单的更改事件的ajax调用 将您的choice.html更改为:
<select id = "selectbox1">
<option>Please Select Car Company</option>
{% for car in cm %}
<option value = "{{car.id}}"> {{car.company_name}} </option>
{% endfor %}
</select>
<select id = "selectbox2">
<option>Select Car Company First</option>
</select>
现在,服务器端:
在URL.py中:
url(r'fetch_options2/([0-9]+)$', 'fetch_options2', name='fetch_options2'),
在views.py中:
def fetch_options2(request, car_company_id):
opt2_html = ""
try:
company = CompanyMake.objects.get(pk = car_company_id)
make_models = company.makemodel_set.all()
for model in make_models:
opt2_html += "<option value='"+str(model.id)+"'>"+model.model_name+"</option>"
except:
write_exception("Error in fetching options 2")
return HttpResponse(opt2_html)
def取车选项2(请求、汽车公司id):
opt2_html=“”
尝试:
company=CompanyMake.objects.get(pk=car\u company\u id)
make\u models=company.makemodel\u set.all()
对于make_模型中的模型:
opt2_html+=“”+模型。模型_名称+“”
除:
写入异常(“获取选项2时出错”)
返回HttpResponse(opt2_html)
就这样。如果您遇到任何问题,请告诉我 您的意思是,第二个选择框的选项取决于第一个选择框的选定值?是的,您是对的。汽车公司有汽车模型,汽车模型有特定的零件。因此,当我选择任何一辆车,然后在下一个下拉菜单中,只有与该车相关的车型才可用。零件也一样。
def fetch_options2(request, car_company_id):
opt2_html = ""
try:
company = CompanyMake.objects.get(pk = car_company_id)
make_models = company.makemodel_set.all()
for model in make_models:
opt2_html += "<option value='"+str(model.id)+"'>"+model.model_name+"</option>"
except:
write_exception("Error in fetching options 2")
return HttpResponse(opt2_html)