【发布时间】：2016-06-30 15:57:40
【问题描述】：
所以我终于在管理员端实现了智能选择 (https://github.com/digi604/django-smart-selects)，但现在当我尝试让实际过滤器在用户端工作时，过滤器不起作用。我试图研究一个解决方案，似乎我需要实现 ajax 才能让智能选择过滤器正常工作。我也确定我的 form.py 设置不正确，但我无法找到调用 .objects.all() 的替代方法，因为我认为 smart-selects 会在后台进行适当的过滤。
我将包含我的 models.py 和 forms.py，以防解决方案在其中。我以前从未编写过 ajax 脚本，我的研究也没有为我指明从哪里开始。
模型.py
from django.db import models
from django.contrib.auth.models import User
from smart_selects.db_fields import ChainedForeignKey
class Status(models.Model):
status = models.CharField(primary_key=True, max_length=25)
## For the API
def __str__(self):
return self.status
## Eliminates title plurality in the admin interface
class Meta:
verbose_name_plural="Status"
class Lab(models.Model):
name = models.CharField(primary_key=True, max_length=100)
## For the API
def __str__(self):
return self.name
## Eliminates title plurality in the admin interface
class Meta:
verbose_name_plural="Lab"
class Category(models.Model):
lab = models.ForeignKey(Lab)
name = models.CharField(primary_key=True, max_length=100)
## For the API
def __str__(self):
return self.name
## Eliminates title plurality in the admin interface
class Meta:
verbose_name_plural="Category"
class SubCategory(models.Model):
lab = models.ForeignKey(Lab)
category = ChainedForeignKey(
Category,
chained_field = 'lab',
chained_model_field = 'lab',
show_all = False,
auto_choose = True
)
subcategory = models.CharField(max_length=100)
category = models.ForeignKey(Category)
## For the API
#def __str__(self):
# return self.category
## Eliminates title plurality in the admin interface
class Meta:
verbose_name_plural="SubCategory"
forms.py
import datetime
from django import forms
## importing models
from .models import Category, Lab, SubCategory ## need these tables to populate dropdown menus 'Category' and 'Lab'
from submit_app.models import Incident
from smart_selects.db_fields import ChainedForeignKey
## importing crispy form utilities
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Layout, Field, Submit, Div
from crispy_forms.bootstrap import AppendedText, PrependedText, FormActions
## importing regex validator
from django.core.validators import RegexValidator
## Maybe best to try to use ModelForm....it seems to have overwhelming internet support
from django.forms import ModelForm
class IncidentForm(forms.ModelForm):
class Meta:
model = Incident
fields = [ 'date_occurred',
'number_of_samples_affected',
'capa',
'title',
'description',
'category',
'lab',
'subcategory',
'upload1',
'upload2',
'upload3'
]
## Pre-populated dropdown menu
lab = forms.ModelChoiceField(
queryset=Lab.objects.all(),
label ="Lab"
)
## Pre-populated dropdown menu
category = forms.ModelChoiceField(
queryset=Category.objects.all(),
label = "Category"
)
subcategory = forms.ModelChoiceField(
queryset=SubCategory.objects.all(),
label = "SubCategory"
)
date_occurred = forms.DateField(
label="Date Incident Occurred",
initial=datetime.date.today()
)
number_of_samples_affected = forms.IntegerField(
label="Number of Samples Affected",
initial='0'
)
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标签： python ajax django django-smart-selects