在Django的依赖下拉列表中从数据库检索数据时，我遇到了问题。 如何为每个字段编写此模板的视图？ 我尝试了传统技术，但这不是定义视图的实际方法。
views.py
from django.shortcuts import render
from .forms import StudentEnquiryForm
from .models import StudentEnquiry,Branch,Department
def index(request):
return render(request,'student/index.html',{})
def admissionfrm(request):
return render(request,'student/admissionfrm.html',{})
def applicantfrm(request):
if request.method=='POST':
fname=request.POST.get('fname')
mname=request.POST.get('mname')
lname=request.POST.get('lname')
dob=request.POST.get('dob')
s=StudentEnquiry(first_name=fname,middle_name=mname,last_name=lname,date_of_birth=dob,phone_no=1521545454,
email_id='sxxxanxxxxxxp@gmail.com',shift='',last_education='',entrance='',year=2011)
s.save()
return render(request,'student/applicantfrm.html')
else:
return render(request,'student/applicantfrm.html')
def studentadmissionlist(request):
return render(request,'student/studentadmissionlist.html',{})
def load_branches(request):
department_id=Department.objects.get('department')
department=Department.objects.filter(department_id=department_id)
branches=Branch.objects.filter(department_id=department_id).order_by('name')
context={
'branches':branches,
'department':department,
}
return render(request,'student/department_options.html',context)
在视图中，我正在测试是否要将数据插入数据库，但是由于下拉菜单的笨拙风格，因此无法获取
urls.py
from django.urls import path
from . import views
urlpatterns=[
path('',views.index,name='home'),
path('admissionfrm/',views.admissionfrm,name='admissionfrm'),
path('applicantfrm/',views.applicantfrm,name='applicantfrm'),
path('studentadmissionlist/',views.studentadmissionlist,name='studentadmissionlist'),
path('ajax/load-branch',views.load_branches,name='ajax_load_branch'),
]
models.py
from django.db import models
import datetime
def year_choices():
return [(r,r) for r in range(1984, datetime.date.today().year+1)]
def current_year():
return datetime.date.today().year
class Department(models.Model):
department=models.CharField(max_length=50)
def __str__(self):
return self.department
class Branch(models.Model):
department=models.ForeignKey(Department,on_delete=models.CASCADE)
branch=models.CharField(max_length=50)
def __str__(self):
return self.branch
class StudentEnquiry(models.Model):
YEAR_CHOICES = [(r,r) for r in range(1984, datetime.date.today().year+1)]
first_name=models.CharField(max_length=20)
middle_name=models.CharField(max_length=20)
last_name=models.CharField(max_length=20)
date_of_birth=models.DateField()
phone_no=models.IntegerField()
email_id=models.EmailField()
department=models.ForeignKey(Department,on_delete=models.CASCADE,blank=False)
branch=models.ForeignKey(Branch,on_delete=models.CASCADE,blank=False)
shift=models.CharField(max_length=10)
last_education=models.TextField()
entrance=models.CharField(max_length=40)
year = models.IntegerField(('year'), choices=year_choices(), default=current_year())
def __str__(self):
return self.first_name
在模型分支中，取决于部门。部门和分支机构必须提取下拉列表。数据必须动态显示在选择选项下拉列表中。
在以下表格部分中，我完全空白，因为我不知道如何从applicationfrm.html页的特定字段填充数据库中的数据。
forms.py
from django import forms
from .models import StudentEnquiry, Branch
class StudentEnquiryForm(forms.ModelForm):
class Meta:
model=StudentEnquiry
fields=('first_name','middle_name','last_name','date_of_birth','phone_no','email_id','last_education','entrance','year')
class CourseFetch(forms.ModelForm):
class Meta:
model=StudentEnquiry
fields=('department','branch')
def __init__(self,*args,**kwargs):
super().__init__(*args,**kwargs)
self.fields['branch'].queryset=Branch.objects.none()
department_options.html
<div class="form-group col-sm-4 col-xs-12">
<label>Course</label>
<select class="form-control">
<option value="">----Select Course----</option>
{% for branch in branches %}
<option value="{{ branch.id }}">{{branch.branch}}</option>
{% endfor %}
</select>
</div>
applicantfrm.html
{% extends 'student/base.html' %}
{% load static %}
{% block content %}
<section id="main-content">
<div class="wrapper">
<div class="row">
<div class="col-lg-8 col-sm-8 col-sm-offset-2">
<div class="">
<div class="panel-body">
<div class="text-center">
<h1 class="hdrcolorbg">
Applicant Registration Form
</h1>
</div>
<form role="form" class="frmbgg" method="POST" id="studentForm" data-branch-url="{% url 'ajax_load_branch' %}" novalidate>
{% csrf_token %}
<div class="row">
<div class="col-sm-12">
<div class="">
<label>Name of Applicant</label>
</div>
<div class="row">
<div class="form-group col-sm-4 col-xs-12">
<input type="text" name="fname" class="form-control" placeholder="First Name">
</div>
<div class="form-group col-sm-4 col-xs-12">
<input type="text" name="mname" class="form-control" placeholder="Middle Name">
</div>
<div class="form-group col-sm-4 col-xs-12">
<input type="text" name="lname" class="form-control" placeholder="Last Name">
</div>
</div>
<div class="row">
<div class="form-group col-sm-4 col-xs-12">
<label>Date of Birth</label>
<input type="text" name="dob" class="form-control" placeholder="Date of Birth">
</div>
<div class="form-group col-sm-4 col-xs-12">
<label>phone Number</label>
<input type="text" name="phone" class="form-control" placeholder="phone Number">
</div>
<div class="form-group col-sm-4 col-xs-12">
<label>Email ID</label>
<input type="text" name="email" class="form-control" placeholder="Email ID">
</div>
</div>
<div class="row">
<div class="form-group col-sm-4 col-xs-12">
<label>Department</label>
<select class="form-control">
<option value="">----Select Department----</option>
{% for dept in department %}
<option value="{{ dept.pk }}">{{dept.department}}</option>
{% endfor %}
</select>
</div>
{% include 'student/department_options.html' %}
<div class="form-group col-sm-4 col-xs-12">
<label>Shift</label>
<select class="form-control">
<option value="">----Select Shift----</option>
<option value="First Shift">First Shift</option>
<option value="Second Shift">Second Shift</option>
</select>
</div>
</div>
<div class="row">
<div class="form-group col-sm-12 col-xs-12">
<label>Educational Qualification Past Determined</label>
<textarea class="form-control txrare" placeholder="Educational Qualification Past Determined"></textarea>
</div>
</div>
<div class="row">
<div class="form-group col-sm-4 col-xs-12">
<label>Entrance</label>
<input type="text" class="form-control" placeholder="Entrance">
</div>
<div class="form-group col-sm-4 col-xs-12">
<label>Year</label>
<input type="text" class="form-control" placeholder="Year">
</div>
<div class="form-group col-sm-4 col-xs-12">
<label>Score</label>
<input type="text" class="form-control" placeholder="Score">
</div>
</div>
</div>
</div>
<button type="submit" class="btn btn-info cancel">Cancel</button>
<button type="submit" class="btn btn-info save">Save & Proceed to Pay</button>
</form>
</div>
</div>
</div>
</div>
</div>
</section>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script type="text/javascript">
$("#id_department").change(function(){
var url=$("studentForm").attr("data-branch-url");
var departmentId=$(this).val();
$.ajax({
url: url,
data:{
'department':departmentId,
},
success:function(data){
$("#id_branch").html(data);
}
});
});
</script>
{% endblock content %}