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Form案例

当在网页点击提交按钮的时候把数据保存到数据库中

1.  进入数据库
2.  创建一个库：create database …………..
3.  进入__init__.py导入pymsql
4.  进入settings.py配置数据库信息
5.  进入models.py创建类
6.  同步创建好的models类:./manage.py makemigrations  ./manage.py migrate
7.  终端show tables；可以看到创建好的类Users
8.  进入forms.py文件创建表单
9.  进入urls.py文件设置路由
10. 配置好路由后进入views.py

views.py文件

from django.shortcuts import render
from django.http import HttpResponse
from .forms import *
from .models import *

# Create your views here.


def remark_views(request):
    if request.method == 'GET':
        form = RemarkForm()
        return render(request, 'remark.html', locals())
    else:
        # 接收提交的数据
        # 1.将POST中的数据放在RemarkForm中
        form = RemarkForm(request.POST)
        # 2.判断当前数据是否通过验证(必须的)
        if form.is_valid():
            # 3.获取提交的数据并封装到cd中
            cd = form.cleaned_data
            # 4.获取每个控件的值
            print(cd['subject'])
            print(cd['mail'])
            print(cd['message'])
            print(cd['topic'])
            return HttpResponse('Query OK')
        else:
            return HttpResponse('Error')


def register_views(request):
    if request.method == 'GET':
        form = RegisterForm()
        return render(request, 'register.html', locals())
    else:
        form = RegisterForm(request.POST)
        if form.is_valid():
            cd = form.cleaned_data
            Users(**cd).save()
        return HttpResponse("Register Success!")


def model_form_views(request):
    if request.method == 'GET':
        form = UsersForm()
        return render(request, 'model_form.html', locals())
    else:
        form = UsersForm(request.POST)
        if form.is_valid():
            cd = form.cleaned_data
            Users(**cd).save()
            return HttpResponse('Register OK')


def login_views(request):
    if request.method == 'GET':
        form = LoginForm()
        return render(request, 'login.html', locals())


def widget1_views(request):
    form = WidgetForm()
return render(request, 'widget.html', locals())

urls.py文件

from django.conf.urls import url
from .views import *
urlpatterns = [
    url(r'^remark/$', remark_views),
    url(r'^register/$', register_views),
    url(r'^model_form/$', model_form_views),
    url(r'^login/$', login_views),
]

urlpatterns += [
    url(r'^widget1/$', widget1_views),
]

forms.py文件

from django import forms
from .models import *

# 作为下拉列表选项的元组
TOPIC_CHOICE = (
    #<option value='level1'>好评</option>
    ('level1', '好评'),
    ('level2', '中评'),
    ('level3', '差评'),
)


class RemarkForm(forms.Form):
    # 1.创建subject属性,对应生成一个文本框
    # 1.1 label:控件前提示的文本
    # 1.2 initial : 控件的初始值
    subject = forms.CharField(label='标题', initial='初始数据')
    # 2.创建email属性,对应生成一个邮件框
    # 2.1 label:控件前提示的文本
    mail = forms.EmailField(label='邮件')
    # 3. 创建多行文本域 - <textarea></textarea>
    # 3.1 widget:取值为forms.Textarea则变为多行文本域
    message = forms.CharField(label='内容', widget=forms.Textarea)
    # 4.下拉列表
    # 4.1 choices:指定下拉列表中的选项们,取值为一个元组
    topic = forms.ChoiceField(label='评价', choices=TOPIC_CHOICE)
    # 5.创建复选框
    save = forms.BooleanField(label='是否保存')


class RegisterForm(forms.Form):
    uname = forms.CharField(label='用户名称')
    upwd = forms.CharField(label='用户密码', widget=forms.PasswordInput)
    uage = forms.CharField(label='用户年龄', widget=forms.NumberInput)
    uemail = forms.EmailField(label='电子邮件')


# 声明一个ModelForm类,与Users实体相关联
class UsersForm(forms.ModelForm):
    class Meta:
        # 1.定义关联的Models
        model = Users
        # 2.定义要生成控件的字段
        fields = '__all__'  # ['uname','upwd']
        # 3.为生成控件的字段指定标签
        labels = {
            'uname': '用户名称',
            'upwd': '用户密码',
            'uage': '用户年龄',
            'uemail': '电子邮箱'
        }


class LoginForm(forms.ModelForm):
    class Meta:
        model = Users
        fields = ['uname', 'upwd']
        labels = {
            'uname': '登录名称',
            'upwd': '登录密码'
        }
        widgets = {
            'upwd': forms.PasswordInput(attrs={
                'class': 'form-control',
                'placeholder': '请输入密码',
                'id': 'upwd'
            })
        }


class WidgetForm(forms.Form):
    uname = forms.CharField(
        label='用户名称',
        widget=forms.TextInput(
            attrs={
                'class': 'form-control',
                'placeholder': '请输入用户名'
            }
        )
    )
    upwd = forms.CharField(
        label='用户密码',
        widget=forms.PasswordInput(
            attrs={
                'class': 'form-control',
                'placeholder': '请输入密码'
            }
        )
)

models.py文件

from django.db import models

# Create your models here.


class Users(models.Model):
    uname = models.CharField(max_length=30)
    upwd = models.CharField(max_length=30)
    uage = models.IntegerField()
uemail = models.EmailField()

__init__文件导入数据库

import pymysql
pymysql.install_as_MySQLdb()

settings.py文件

"""
Django settings for day8 project.

Generated by 'django-admin startproject' using Django 1.11.8.

For more information on this file, see
https://docs.djangoproject.com/en/1.11/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.11/ref/settings/
"""

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '!=b8cn0=n1^foii(6s&33$ahszac#e@!&q6q(ly31bbk7@s^2-'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'index',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'day8.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'day8.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'day8',
        'USER': 'root',
        'PASSWORD': '123456',
        'HOST': 'localhost',
        'PORT': '3306',
    }
}


# Password validation
# https://docs.djangoproject.com/en/1.11/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/1.11/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.11/howto/static-files/

STATIC_URL = '/static/'

form案例-提交注册信息到数据中

标签：short   roc   子邮件   set   this   cfile   接收   use   import   

原文地址：https://www.cnblogs.com/-hjj/p/9945611.html