我需要允许用户编辑字段以使用时尚的模态窗口自定义字段的名称。我一直在努力寻找AJAX的教程,但这有点过头了。
我的HTML:
<div id="editCustomParam" class="modal fade bd-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
<div class="modal-dialog modal-lg">
<form class="form-horizontal" id="chamber-form" action="" method="post" enctype="multipart/form-data">
{% csrf_token %}
<div class="modal-content">
<div class="modal-header">
<h3>Edit Parameter Name</h3>
</div>
<div class="modal-body">
{{ custom_param_form|crispy }}
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
<button type="button" class="btn btn-primary submit_property" id="property_submit">Submit</button>
</div>
</div>
</form>
</div>
</div>
要编辑的按钮和元素:
<td><i id="edit_{{parameter.id}}" data-toggle="modal" data-target="#editCustomParam" class="far fa-edit" title="Edit Parameter Name"></i> <span>{{parameter.parameter_name_userdef}}</span></td>
AJAX:
$(document).ready(function() {
$('.submit_parameter').click(function(el) {
var parameter_name = $("#id_parameter_name_userdef").val();
var sensor_id = {{sensor.id}}
$.post("{% url 'sensor' sensor.id %}", {
csrfmiddlewaretoken: '{{csrf_token}}'
}, function(data) {
location.reload();
}).done();
});
});
表格:
class CustomParameterForm(ModelForm):
parameter_name_userdef = forms.CharField(max_length=100)
class Meta:
model = SensorParameter
fields = ['parameter_name_userdef']
观点:
class SensorInfoView(generic.DetailView):
model = Sensor
template_name = 'expert/sensor.html'
def get(self, request, sensor_id):
sensor = Sensor.objects.get(pk=sensor_id)
chamber = Chamber.objects.get(sensor=sensor)
sensor_parameters = SensorParameter.objects.filter(sensor=sensor)
custom_param_form = CustomParameterForm()
return render(request, self.template_name, {'sensor': sensor,
'chamber': chamber,
'custom_param_form': custom_param_form,
'sensor_parameters': sensor_parameters})
def post(self, request, sensor_id):
instance = get_object_or_404(Sensor, id=id)
form = CustomParameterForm(request.POST or None, instance=instance)
if form.is_valid():
form.save()
return redirect('next_view')
return render(request, 'expert/sensor.html', {'custom_param_form': custom_param_form})
模特:
class SensorParameter(models.Model):
sensor = models.ForeignKey(Sensor)
parameter = models.ForeignKey(Parameter)
parameter_name_userdef = models.CharField(max_length=100, blank=False, default=parameter)
live_value = models.FloatField()
现在,程序似乎很简单,这是我不太关注的执行。
我一直在阅读一些教程,但我尝试按照这些步骤进行操作,现在我仍然确定如何处理AJAX位。我还是Django的新手,这也是我第一次使用AJAX,所以我不确定我是否犯了任何明显的新手错误。
感谢您的帮助!
答案 0 :(得分:0)
您是否可以更好地检查它是否在模型中更新了?
class SensorParameter(models.Model):
sensor = models.ForeignKey(Sensor)
parameter = models.ForeignKey(Parameter)
parameter_name_userdef = models.CharField(max_length=100, blank=False, default=parameter)
live_value = models.FloatField()
__sensor = None
__parameter = None
__parameter_name_userdef = None
__live_value = None
def __init__(self, *args, **kwargs):
super(SensorParameter, self).__init__(*args, **kwargs)
self.__sensor = self.parameter_name_userdef
self.__parameter = self.parameter
self.__parameter_name_userdef = self.parameter_name_userdef
self.__live_value = self.live_value
def save(self, force_insert=False, force_update=False, *args, **kwargs):
if self.sensor == self.__sensor and (
self.parameter_name_userdef != self.__parameter_name_userdef):
super(SensorParameter, self).save(force_insert, force_update, *args, **kwargs)
self.__parameter_name_userdef = self.parameter_name_userdef
else:
super(SensorParameter, self).save(force_insert, force_update, *args, **kwargs)
self.__sensor = self.parameter_name_userdef
self.__parameter = self.parameter
self.__parameter_name_userdef = self.parameter_name_userdef
self.__live_value = self.live_value
我在这里所做的基本上是当表单创建一个新的SensorParameter
时,它会提交每个值,但是当那个SensorParameter
已经ForeignKey
时,然后它只会更新值parameter_name_userdef
。
虽然您还必须从ForeignKey
发送sensor
,因为您想检查哪些SensorParameter
需要更新?我假设?但这就是你如何轻松更新模型中的单个值,如果你想要你也可以为多个值设置它。