Django 中利用ModelForm 可以快速地利用数据库对应的Model 子类来自动创建对应表单.
from django.db import models from django.forms import ModelForm class Book(models.Model): name = models.CharField(max_length=100) description = models.CharField(max_length=100) url= models.CharField(max_length=100) authors = models.ManyToManyField(Author)
修改Form的widgtes属性方法
from django import forms class BookForm(forms.Form): name = forms.CharField() url = forms.URLField() description = forms.CharField()
第一种:直接修改
class BookForm(forms.Form): name = forms.CharField(widget=forms.TextInput(attrs={'class': 'special'})) url = forms.URLField() comment = forms.CharField(widget=forms.TextInput(attrs={'size': '40'}))
第二种:在表单定义中修改widget属性
class CommentForm(forms.Form): name = forms.CharField() url = forms.URLField() comment = forms.CharField() name.widget.attrs.update({'class': 'special'}) comment.widget.attrs.update(size='40')
修改ModelForm的widgets属性两种方法:
第一种方法:
class BookForm(forms.ModelForm): class Meta: model = Book fields = ['name', 'description'] widgets = { 'name': Textarea(attrs={'cols': 80, 'rows': 20}), 'description': Textarea(attrs={'cols': 80, }
第二种重写__init__方法:
class BookForm(forms.ModelForm): class Meta: model = Book def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.fields['name'].widget.attrs.update({'class': 'special'}) self.fields['description'].widget.attrs.update(size='40')
Django将在渲染输出中包含额外属性:
>>> f = CommentForm(auto_id=False) >>> f.as_table() <tr><th>Name:</th><td><input type="text" name="name" class="special" required></td></tr> <tr><th>Url:</th><td><input type="url" name="url" required></td></tr> <tr><th>Description:</th><td><input type="text" name="comment" size="40" required></td></tr>
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