2018-10-12 15:24:23
From表单参考连接: https://www.cnblogs.com/yuanchenqi/articles/7614921.html
新增了ModelForm的使用,比Form 更省事更简洁!
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把自己的博客项目再优化一下!!!233333333!
越努力,越幸运!永远不要高估自己!
views.py
from django.shortcuts import render,redirect
from .models import *
from django import forms
from django.forms import widgets as wid
from django.forms import ModelForm
# 让Model转换成form Meta是配置类
class BookForm(ModelForm):
class Meta:
model = Book
fields = "__all__"
labels = {
"title": "书籍名称",
"price": "价格"
}
# 在特定框里面加入 标签
widgets = {
"title": wid.TextInput(attrs={"class": "form-control"})
"price": wid.TextInput(attrs={"class": "form-control"})
"authors": wid.TextInput(attrs={"class": "form-control"})
}
# 配置错误信息
# error_messages{
# "": ""
# }
# 这些等同于 下面原生的 BookForm(forms.Form) 类
"""原生的BookForm"""
# class BookForm(forms.Form):
# title = forms.CharField(max_length=32,label="书籍名称")
# price = forms.DecimalField(max_digits=8, decimal_places=2,label="价格") # 999999.99
# 渲染的特定标签时候,加特定东西
# date = forms.DateField(label="日期",
# widget=widgets.TextInput(attrs={"type":"date"})
# )
# # 与数据库没关系用这个
# #gender=forms.ChoiceField(choices=((1,"男"),(2,"女"),(3,"其他")))
# # 与数据库有关系用下面俩
# #publish=forms.ChoiceField(choices=Publish.objects.all().values_list("pk","title"))
# # 单选下拉框
# publish=forms.ModelChoiceField(queryset=Publish.objects.all())
# authors=forms.ModelMultipleChoiceField(queryset=Author.objects.all())
def books(request):
book_list=Book.objects.all()
return render(request,"books.html",locals())
"""用原生form表单做的 """
# def addbook(request):
# if request.method=="POST":
# form = BookForm(request.POST)
# if form.is_valid():
# print("cleaned_data",form.cleaned_data)
# title=form.cleaned_data.get("title")
# price=form.cleaned_data.get("price")
# date=form.cleaned_data.get("date")
# publish=form.cleaned_data.get("publish")
# authors=form.cleaned_data.get("authors") # [1,2]
# book_obj=Book.objects.create(title=title,price=price,date=date,publish=publish)
# book_obj.authors.add(*authors)
# return redirect("/books/")
# form=BookForm()
# publish_list=Publish.objects.all()
# author_list=Author.objects.all()
# return render(request,"add.html",locals())
"""用ModelForm做的add"""
def addbook(request):
if request.method=="POST":
form = BookForm(request.POST)
if form.is_valid():
form.save()
return redirect("/books/")
"""原生的form"""
# def editbook(request,edit_book_id):
# if request.method=="POST":
# title=request.POST.get("title")
# price=request.POST.get("price")
# date=request.POST.get("date")
# publish_id=request.POST.get("publish_id")
# author_pk_list=request.POST.getlist("author_pk_list") # [1,2]
#
# Book.objects.filter(pk=edit_book_id).update(title=title,price=price,date=date,publish_id=publish_id)
# book_obj=Book.objects.filter(pk=edit_book_id).first()
# book_obj.authors.set(author_pk_list)
# return redirect("/books/")
# edit_book=Book.objects.filter(pk=edit_book_id).first()
# form=BookForm()
# return render(request,"edit.html",locals())
"""用ModelForm做的edit_books"""
def editbook(request,edit_book_id):
edit_book = Book.objects.filter(pk=edit_book_id).first()
if request.method == "POST":
# 传入个isinstance 对象,让他知道对谁 update
form = BookForm(request.POST, isinstance=edit_book)
if form.is_valid():
form.save()
return redirect("/books/")
form = BookForm(isinstance=edit_book)
return render(request, "edit.html", locals())
add.html和edit_book.html一样
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<title>Title</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<h3>添加页面</h3>
<form action="" method="post" novalidate>
{% csrf_token %}
{% for field in form %}
<div>
{{ field.label }}
{{ field }}
</div>
{% endfor %}
<input type="submit">
</form>
</body>
</html>
笔记
原生form
forms组件
ChoiceField(Field)
ModelChoiceField(ChoiceField)
ModelMultipleChoiceField(ModelChoiceField)
1 针对form表单设计form组件
modelform
class Book(models.Model):
title=models.CharField(max_length=32)
price=models.DecimalField(max_digits=8,decimal_places=2) # 999999.99
date=models.DateField()
publish=models.ForeignKey("Publish")
authors=models.ManyToManyField("Author")
class BookForm(forms.Form):
title = forms.CharField(max_length=32,label="书籍名称")
price = forms.DecimalField(max_digits=8, decimal_places=2,label="价格") # 999999.99
date = forms.DateField(label="日期",
widget=widgets.TextInput(attrs={"type":"date"})
)
#gender=forms.ChoiceField(choices=((1,"男"),(2,"女"),(3,"其他")))
#publish=forms.ChoiceField(choices=Publish.objects.all().values_list("pk","title"))
publish=forms.ModelChoiceField(queryset=Publish.objects.all())
authors=forms.ModelMultipleChoiceField(queryset=Author.objects.all())
原文地址：https://www.cnblogs.com/zhen1996/p/9780374.html
时间： 2024-10-11 03:15:51