Form和ModelForm
阿新 • • 發佈：2017-10-10
ret 創建 mode dir name title cnblogs set color
Django表單系統中，所有的表單類都作為django.forms.Form的子類創建，包括ModelForm
關於django的表單系統，主要分兩種
基於django.forms.Form:所有表單類的父類
基於django.forms.ModelForm:可以和模型類綁定的Form
form實例
# app01/views.py from django.shortcuts import render, HttpResponse # Create your views here. # from django import formsfrom django import forms class LoginForm(forms.Form): user=forms.CharField(min_length=5, max_length=12, error_messages={‘required‘:"該內容不能為空"}, widget=forms.TextInput(attrs={"class":"s",‘placeholder‘:‘user‘}) ) pwd=forms.CharField() def login(request): if request.method=="POST": form_obj=LoginForm(request.POST)if form_obj.is_valid(): print(form_obj.cleaned_data) else: print(form_obj.errors) return HttpResponse("OK") form_obj=LoginForm() return render(request, "login.html",{‘form_obj‘: form_obj}) # template/login.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <form action="/login/" method="POST"> {% csrf_token %} {{ form_obj.as_p }} <button>提交</button> </form> </body> </html> ###或 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <form action="/login/" method="POST"> {% csrf_token %} {{ form_obj.user }} {{ form_obj.pwd }} <button>提交</button> </form> </body> </html>
##註意事項
1） {% csrf_token %}
2) html中button標簽在form表單中具有提交功能，在form表單外不具有提交功能
{{ form_obj.as_p }}
{{ form_obj.as_ul }}
{{ form_obj.as_table }}
ModelForm實例
from django.shortcuts import render, redirect, HttpResponse from . import models # Create your views here. from django.forms import ModelForm from django.forms import widgets as wid from django.forms import fields as fld class UserModelForm(ModelForm): class Meta: model = models.UserInfo fields = "__all__" fields = [‘username‘,‘nickname‘] exclude = [‘username‘] error_messages={ ‘username‘: {‘required‘: ‘用戶名不能為空‘}, } widgets= { ‘username‘: wid.Textarea(attrs={‘class‘:"c1"}) } labels={ ‘username‘: ‘用戶名‘, } help_texts= { ‘username‘: ‘別瞎寫,.......‘ } field_classes= { ‘nickname‘: fld.EmailField } class RoleModelForm(ModelForm): class Meta: model = models.Role fields = "__all__" class PermissionModelForm(ModelForm): class Meta: model = models.Permission fields = "__all__" class MenuModelForm(ModelForm): class Meta: model = models.Menu fields = "__all__" def users(request): user_list= models.UserInfo.objects.all() return render(request,"rbac/users.html",{‘user_list‘:user_list}) def user_add(request): if request.method == "GET": model_form=UserModelForm() return render(request, "rbac/user_add.html", {‘model_form‘:model_form}) else: model_form=UserModelForm(request.POST) if model_form.is_valid(): model_form.save() return redirect("/rbac/users/") return render(request, "rbac/user_add.html", {‘model_form‘: model_form}) def user_del(request,pk): obj_queryset=models.UserInfo.objects.filter(pk=pk) if obj_queryset: obj_queryset.delete() return redirect("/rbac/users/") def user_edit(request,pk): obj = models.UserInfo.objects.filter(pk=pk).first() if not obj: return redirect("/rbac/users/") if request.method=="GET": model_form=UserModelForm(instance=obj) return render(request,‘rbac/user_edit.html‘,{‘model_form‘:model_form}) else: model_form=UserModelForm(request.POST,instance=obj) if model_form.is_valid(): model_form.save() return redirect("/rbac/users/") return render(request, ‘rbac/user_edit.html‘, {‘model_form‘: model_form})
Form和ModelForm