要将参数传递给reverse_lazy,我们需要将它们作为字典传递给kwargs关键字参数。这个字典的键应该与URL模式中的参数名称匹配。 使用reverse_lazy函数可以确保在URL解析时不会发生意外的副作用,并且可以避免在使用reverse函数时可能出现的循环引用问题。
The string returned byreverse()is alreadyurlquoted. For example: >>>reverse('cities',args=['Orléans'])'.../Orl%C3%A9ans/' Applying further encoding (such asurllib.parse.quote()) to the output ofreverse()may produce undesirable results. reverse_lazy()¶ A lazily evaluated version ofrev...
from django import forms from django.core.exceptions import ValidationError from django.utils.translation import ngettext_lazy class MyForm(forms.Form): error_message = ngettext_lazy("You only provided %(num)d argument", "You only provided %(num)d arguments", 'num') def clean(self): # .....
By providing the entry.id as a keyword argument in line 15, you stay on the entry detail page after editing it. Instead of using URLs directly, you use reverse_lazy() to refer to them by name, just like you did in your templates. Create the Templates Like before, Django looks for te...
reverse()、reverse_lazy(),from django.core.urlresolvers import reverse, reverse_lazy: def reverse(viewname, urlconf=None, args=None, kwargs=None, current_app=None): it is useful for when you need to use a URL reversal before your project's URLconf is loaded. ...
TypeError: Field 'id' expected a number but got <SimpleLazyObject: <django.contrib.auth.models.AnonymousUser object at 0x000001C1939EBE90>> Posted on 2024年3月21日 at 14:43 byStack OverflowRSS When I try add the product to wishlist it gives me above error, It still saves the object to...
必须传入一个关键字参数:与该模型关联的类,它与 ForeignKey 的完全一样,包括 recursive 和lazy 关系类型.可以通过字段的 RelatedManager 进行关联对象的添加/删除和创建.数据库表示 在数据库层, Django 通过创建一个中间表来表示多对多关系. 默认情况下, 这张中间表的名称是由使用多对多字段的名称和包含这张表的...
Used by this class's # `lazy_model_operation()` and `do_pending_operations()` methods. self._pending_operations = defaultdict(list) # Populate apps and models, unless it's the master registry. if installed_apps is not None: self.populate(installed_apps) ## 启动项目时最主要的执行函数 ...
For example, you can create myproject/jinja2.py with this content: from django.contrib.staticfiles.storage import staticfiles_storage from django.urls import reverse from jinja2 import Environment def environment(**options): env = Environment(**options) ...
self.source=str(template_string)# May be lazy.self.nodelist=self.compile_nodelist() 从from .engine import Engine语句可以看到,这里是引用了engine.py里面的Engine类,,engine.py的路径与defaulttags.py路径相同,其中Engine类的初始化代码如下: classEngine:default_builtins=['django.template.defaulttags','djan...