10.12Django form表单
Posted zhen1996
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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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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())
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