django-models

问题 I have two Django models for an eCommerce website: class Product(models.Model): name=models.CharField(max_length=300) description=models.CharField(max_length=10000) class Thumnbnail(models.Model): thumnbnail=models.ImageField(null=True) product=models.ForeignKey(Product, related_name='related_product', on_delete=models.CASCADE) The user will input some keywords, and I filter on the product names with that keyword, and show only those products. With every product, on the results page, I want

问题 I have two Django models for an eCommerce website: class Product(models.Model): name=models.CharField(max_length=300) description=models.CharField(max_length=10000) class Thumnbnail(models.Model): thumnbnail=models.ImageField(null=True) product=models.ForeignKey(Product, related_name='related_product', on_delete=models.CASCADE) The user will input some keywords, and I filter on the product names with that keyword, and show only those products. With every product, on the results page, I want

问题 I am creating a form that allows a user to select a image and upload it using Django and AJAX. This process works fine but the problem is that the uploaded image isn't being displayed on the screen however I did specify a div for it. These are the steps that I followed: Create a model that handle the uploaded image. Create a path for the function. Create the function that uploads the selected image. Create the template and AJAX function. models.py: class photo(models.Model): title = models

问题 I am creating a form that allows a user to select a image and upload it using Django and AJAX. This process works fine but the problem is that the uploaded image isn't being displayed on the screen however I did specify a div for it. These are the steps that I followed: Create a model that handle the uploaded image. Create a path for the function. Create the function that uploads the selected image. Create the template and AJAX function. models.py: class photo(models.Model): title = models

问题 I have added a form for my django rest project. However, I keep getting a 'ModelFormOptions' object has no attribute 'concrete_model' error. In my User class I have added a new field 'password' and I was trying to create a form. and call the serializer upon it. My Model: class User(models.Model): gender = models.CharField(max_length=10, blank=False, choices=GENDER) first_name = models.CharField(max_length=20, blank=False) last_name = models.CharField(max_length=20, blank=False) position =

问题 I have added a form for my django rest project. However, I keep getting a 'ModelFormOptions' object has no attribute 'concrete_model' error. In my User class I have added a new field 'password' and I was trying to create a form. and call the serializer upon it. My Model: class User(models.Model): gender = models.CharField(max_length=10, blank=False, choices=GENDER) first_name = models.CharField(max_length=20, blank=False) last_name = models.CharField(max_length=20, blank=False) position =

问题 Like the title says I need to rename some items in a queryset. The code for the queryset is made like this: data = SnpsFunctionalelement.objects.values('snpid__rsid', 'elementid__name', 'celllineid__name', 'countexperiments', 'filetype') i tried to rename the values using from django.db.models import F but if I do data = SnpsFunctionalelement.objects.values(rsid=F('snpid__rsid'), FunctionalElement=F('elementid__name'), CellLine=F('celllineid__name'), countexperiments=F('countexperiments'),

问题 Coming from Angular, this was easy to do, but I am not sure where to begin on creating a dropdown form that will filter from a list of objects. Basically, I have the code below, that will pull in and display all real estate listings; I would like to create a dropdown that will have 2 selections, 'Featured' and 'New Listing' and when a user selects one, the list will filter out and display only those listings that match. Thank you for your help. Here is my model from django.db import models

问题 Coming from Angular, this was easy to do, but I am not sure where to begin on creating a dropdown form that will filter from a list of objects. Basically, I have the code below, that will pull in and display all real estate listings; I would like to create a dropdown that will have 2 selections, 'Featured' and 'New Listing' and when a user selects one, the list will filter out and display only those listings that match. Thank you for your help. Here is my model from django.db import models

问题 According to this document that was added on v1.9 we can able to query a DateTimeField by date without time. Examples are: Entry.objects.filter(pub_date__date=datetime.date(2005, 1, 1)) Entry.objects.filter(pub_date__date__gt=datetime.date(2005, 1, 1)) But it is not working for me: class MilkStorage(models.Model): .... created_at = models.DateTimeField(null=False) Usage from datetime import date MilkStorage.objects.filter(created_at__date=date.today()) It returns an empty queryset <QuerySet [