[英]How to build a resnet with Keras that trains and predicts the subclass from the main class?
[英]How to pull variables of the main class from a subclass in django
我有该网站的过滤器代码:
def buy_files(request):
bdfiles = FeedFile.objects.all()
# bdfiles = UploadFile.objects.all()
form = FileFilterForm(request.GET)
if form.is_valid():
if form.cleaned_data["number_course"]:
bdfiles = bdfiles.filter(number_course = form.cleaned_data["number_course"])
if form.cleaned_data["number_semestr"]:
bdfiles = bdfiles.filter(number_semestr = form.cleaned_data["number_semestr"])
if form.cleaned_data["subjectt"]:
bdfiles = bdfiles.filter(subjectt = form.cleaned_data["subjectt"])
if form.cleaned_data["type_materials"]:
bdfiles = bdfiles.filter(type_materials = form.cleaned_data["type_materials"])
if form.cleaned_data["institute"]:
bdfiles = bdfiles.filter(institute = form.cleaned_data["institute"])
return render(request, 'chat/files/buyfile.html', {'bdfiles': bdfiles, 'form':form})
和models.py:
class UploadFile(models.Model):
user = models.ForeignKey(User,on_delete = models.CASCADE,related_name='file_created' ,verbose_name='Автор')
title = models.CharField(max_length=200, verbose_name='Заголовок')
# uploadedfile = models.FileField(upload_to='files/',null=True, verbose_name='Файл')
description = models.TextField(blank=True, verbose_name='Описание')
createdtime = models.DateField(auto_now_add=True, db_index=True, verbose_name='Дата создания')
price = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True, verbose_name='Цена')
number_course = models.IntegerField(null=True, blank=True, verbose_name='Курс')
number_semestr = models.IntegerField(null=True, blank=True, verbose_name='Семестр')
subjectt = models.CharField(max_length=200, null=True,verbose_name='Предмет')
type_materials = models.CharField(max_length=200,null=True, verbose_name='Тип работы')
institute = models.CharField(max_length=200, null=True, verbose_name='Институт')
def __str__(self):
return self.title
class Meta:
verbose_name = 'Загрузка файла'
verbose_name_plural = 'Загрузка файлов'
class FeedFile(models.Model):
file = models.FileField(upload_to="files/")
feed = models.ForeignKey(UploadFile, on_delete=models.CASCADE)
当我开始在html页面的过滤器中输入数据时,出现错误,没有number_semestr、number_course等字段,而只有字段feed、feed_id、file、id。 HTML 页面代码:
<form action="" method="get" style="width:90%">
{% csrf_token %}
<!-- {{form|crispy}}-->
<p><label class="form-label" for="{{ form.number_course.id_for_label }}">Курс: </label> {{ form.number_course }}</p>
<div class="form-error">{{ form.number_course.errors }}</div>
<p><label class="form-label" for="{{ form.number_semestr.id_for_label }}">Семестр: </label> {{ form.number_semestr }}</p>
<div class="form-error">{{ form.number_semestr.errors }}</div>
<p><label class="form-label" for="{{ form.subjectt.id_for_label }}">Дисциплина </label> {{ form.subjectt }}</p>
<div class="form-error">{{ form.subjectt.errors }}</div>
<p><select name = "type_materials" required class="form-select" aria-label="Тип материала">
<option selected>Тип материала</option>
<option value="Практические работы">Практические работы</option>
<option value="Лабораторные работы">Лабораторные работы</option>
<option value="Курсовые">Курсовые</option>
<option value="Дипломная работа">Дипломная работа</option>
<option value="Лекции">Лекции</option>
<option value="Диск с работами">Диск с работами</option>
<option value="Другое">Другое</option>
</select></p>
<p><select name = "institute" required class="form-select" aria-label="Институт">
<option selected>Институт</option>
<option value="ИВТИ">ИВТИ</option>
<option value="ГПИ">ГПИ</option>
<option value="ИЭЭ">ИЭЭ</option>
<option value="ИГВИЭ">ИГВИЭ</option>
<option value="ИнЭИ">ИнЭИ</option>
<option value="ИРЭ">ИРЭ</option>
<option value="ИЭТЭ">ИЭТЭ</option>
<option value="ИТАЭ">ИТАЭ</option>
<option value="ИЭВТ">ИЭВТ</option>
<option value="ЭнМИ">ЭнМИ</option>
<option value="Другой">Другой</option>
</select></p>
<div class="form-error">{{ form.institute.errors }}</div>
<button type="submit" class="btn btn-primary">Найти</button>
</form>
如何从 Feedfile class 中提取 uploadFile class 的变量?
您需要参考您的 ForeignKey:
def buy_files(request):
bdfiles = FeedFile.objects.all()
# bdfiles = UploadFile.objects.all()
form = FileFilterForm(request.GET)
if form.is_valid():
if form.cleaned_data["number_course"]:
bdfiles = bdfiles.filter(feed__number_course = form.cleaned_data["number_course"])
if form.cleaned_data["number_semestr"]:
bdfiles = bdfiles.filter(feed__number_semestr = form.cleaned_data["number_semestr"])
if form.cleaned_data["subjectt"]:
bdfiles = bdfiles.filter(feed__subjectt = form.cleaned_data["subjectt"])
if form.cleaned_data["type_materials"]:
bdfiles = bdfiles.filter(feed__type_materials = form.cleaned_data["type_materials"])
if form.cleaned_data["institute"]:
bdfiles = bdfiles.filter(feed__institute = form.cleaned_data["institute"])
return render(request, 'chat/files/buyfile.html', {'bdfiles': bdfiles, 'form':form})
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