我试图实现一个基于另一个字段预先填充字段的表单。作为一个起点,我想使表格自动提交'当选择下拉菜单中的选项时。我尝试过以下模板:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
$(".auto-submit").change(function() {
$(this).closest("form").submit();
});
</script>
<form action="" method="post">{% csrf_token %}
{% for field in form %}
{% if field.name == "checkin_type" %}
<div class="auto-submit">
{{ field.errors }}
{{ field.label_tag }}
{{ field }}
</div>
{% else %}
<div>
{{ field.errors }}
{{ field.label_tag }}
{{ field }}
</div>
{% endif %}
{% endfor %}
<input type="submit" value="Send message" />
</form>
视图基于Django的通用CreateView
:
from django.views import generic
from .models import CheckIn
class CheckInCreate(generic.CreateView):
model = CheckIn
fields = '__all__'
并且模型是
from django.db import models
from django.urls import reverse
class CheckInType(models.Model):
title = models.CharField(blank=True, max_length=255)
description = models.TextField(blank=True)
def __str__(self):
return self.title
class CheckIn(models.Model):
checkin_type = models.ForeignKey(CheckInType, null=True, on_delete=models.CASCADE)
title = models.CharField(blank=True, max_length=255)
description = models.TextField(blank=True)
notes = models.TextField(blank=True)
# Scheduling
requested_date = models.DateField(blank=True, null=True)
completed_date = models.DateField(blank=True, null=True)
def get_absolute_url(self):
return reverse('checkin-detail', kwargs={'pk': self.id})
def save(self, *args, **kwargs):
if self.checkin_type:
if not self.title:
self.title = self.checkin_type.title
if not self.description:
self.description = self.checkin_type.description
super().save(*args, **kwargs)
但是,如果我实际上在浏览器中选择了一个下拉菜单选项,则没有任何反应。有人可以解释为什么这不起作用吗?
答案 0 :(得分:2)
您尝试在将下拉菜单加载到DOM之前附加事件处理程序。您可以使用document.ready等待它加载以附加处理程序
$(document).ready(function(){
$(".auto-submit").change(function() {
$(this).closest("form").submit();
//this.form.submit(); //less verbose
});
});