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Python-100-Days
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'更新了Django示例代码'

pull/14/merge
jackfrued 2018-07-05 16:54:15 +08:00
parent 24422f4f18
commit 267bd522cd
10 changed files with 251 additions and 38 deletions
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13
Day41-55/code/hellodjango/demo/forms.py 100644
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@ -0,0 +1,13 @@
from django import forms
from demo.models import User
class UserForm(forms.ModelForm):
username = forms.CharField(max_length=20, min_length=6)
password = forms.CharField(widget=forms.PasswordInput, max_length=20, min_length=8)
email = forms.CharField(widget=forms.EmailInput, max_length=255)
class Meta(object):
model = User
fields = ('username', 'password', 'email')

33
Day41-55/code/hellodjango/demo/migrations/0004_auto_20180705_1017.py 100644
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@ -0,0 +1,33 @@
# Generated by Django 2.0.6 on 2018-07-05 02:17
from django.db import migrations, models
import django.db.models.deletion
class Migration(migrations.Migration):
dependencies = [
('demo', '0003_auto_20180704_1118'),
]
operations = [
migrations.CreateModel(
name='User',
fields=[
('no', models.AutoField(db_column='uno', primary_key=True, serialize=False, verbose_name='编号')),
('username', models.CharField(max_length=20, unique=True, verbose_name='用户名')),
('password', models.CharField(max_length=40, verbose_name='口令')),
('email', models.CharField(max_length=255, verbose_name='邮箱')),
],
options={
'verbose_name': '用户',
'verbose_name_plural': '用户',
'db_table': 'tb_user',
},
),
migrations.AlterField(
model_name='teacher',
name='subject',
field=models.ForeignKey(db_column='sno', on_delete=django.db.models.deletion.PROTECT, related_name='+', to='demo.Subject', verbose_name='所属学科'),
),
]

37
Day41-55/code/hellodjango/demo/models.py
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@ -1,6 +1,33 @@
from hashlib import sha1
from django.db import models
from django.db.models import PROTECT
# 高内聚 低耦合
# 面向对象七个设计原则
# 单一职责原则 / 开闭原则 / 依赖倒转原则 / 里氏替换原则 / 接口隔离原则 / 合成聚合复用原则 / 迪米特法则
# 1995年 - GoF - 23个设计模式
# 创建型模式中的原型模式
proto = sha1()
class User(models.Model):
no = models.AutoField(primary_key=True, db_column='uno', verbose_name='编号')
username = models.CharField(max_length=20, unique=True, verbose_name='用户名')
password = models.CharField(max_length=40, verbose_name='口令')
email = models.CharField(max_length=255, verbose_name='邮箱')
def save(self, force_insert=False, force_update=False, using=None, update_fields=None):
hasher = proto.copy()
hasher.update(self.password.encode('utf-8'))
self.password = hasher.hexdigest()
super().save(force_insert, force_update, using, update_fields)
class Meta(object):
db_table = 'tb_user'
verbose_name = '用户'
verbose_name_plural = '用户'
class Subject(models.Model):
no = models.AutoField(primary_key=True, db_column='sno', verbose_name='编号')
@ -27,6 +54,16 @@ class Teacher(models.Model):
good_count = models.IntegerField(default=0, db_column='tgcount', verbose_name='好评数')
bad_count = models.IntegerField(default=0, db_column='tbcount', verbose_name='差评数')
@property
def gcount(self):
return f'{self.good_count}' \
if self.good_count <= 999 else '999+'
@property
def bcount(self):
return f'{self.bad_count}' \
if self.bad_count <= 999 else '999+'
class Meta(object):
db_table = 'tb_teacher'
verbose_name = '讲师'

66
Day41-55/code/hellodjango/demo/views.py
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@ -1,14 +1,53 @@
import json
from django.http import HttpResponse
from django.shortcuts import render
from django.shortcuts import render, redirect
from demo.models import Subject, Teacher
from demo.forms import UserForm
from demo.models import Subject, Teacher, User, proto
def index(request):
def login(request):
if request.method.lower() == 'get':
return render(request, 'demo/login.html', {})
else:
username = request.POST['username']
try:
user = User.objects.get(username__exact=username)
password = request.POST['password']
hasher = proto.copy()
hasher.update(password.encode('utf-8'))
if hasher.hexdigest() == user.password:
return redirect('sub')
except User.DoesNotExist:
pass
return render(request, 'demo/login.html',
{'hint': '用户名或密码错误'})
def register(request):
if request.method.lower() == 'get':
return render(request, 'demo/register.html',
{'f': UserForm()})
else:
try:
form = UserForm(request.POST)
if form.is_valid():
form.save(commit=True)
return render(request, 'demo/login.html',
{'hint': '注册成功请登录!'})
else:
return render(request, 'demo/register.html',
{'hint': '请输入有效的注册信息', 'f': form})
except:
return render(request, 'demo/register.html',
{'hint': '注册失败, 请尝试其他的用户名!'})
def show_subjects(request):
ctx = {'subjects_list': Subject.objects.all()}
return render(request, 'demo/index.html', ctx)
return render(request, 'demo/subject.html', ctx)
def show_teachers(request, no):
@ -17,19 +56,18 @@ def show_teachers(request, no):
return render(request, 'demo/teacher.html', ctx)
def make_good_comment(request, no):
def make_comment(request, no):
ctx = {'code': 200}
try:
teacher = Teacher.objects.get(pk=no)
if request.path.startswith('/good'):
teacher.good_count += 1
teacher.save()
ctx = {'code': 200, 'result': f'好评({teacher.good_count})'}
return HttpResponse(json.dumps(ctx),
content_type='application/json; charset=utf-8')
def make_bad_comment(request, no):
teacher = Teacher.objects.get(pk=no)
ctx['result'] = f'好评({teacher.gcount})'
else:
teacher.bad_count += 1
ctx['result'] = f'差评({teacher.bcount})'
teacher.save()
ctx = {'code': 200, 'result': f'差评({teacher.bad_count})'}
except Teacher.DoesNotExist:
ctx['code'] = 404
return HttpResponse(json.dumps(ctx),
content_type='application/json; charset=utf-8')

6
Day41-55/code/hellodjango/hellodjango/settings.py
View File

@ -55,7 +55,7 @@ ROOT_URLCONF = 'hellodjango.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, 'templates')],
'DIRS': [os.path.join(BASE_DIR, 'templates'),],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
@ -123,5 +123,7 @@ USE_TZ = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.0/howto/static-files/
STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static')]
STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static'),]
STATIC_URL = '/static/'
# APPEND_SLASH = False

11
Day41-55/code/hellodjango/hellodjango/urls.py
View File

@ -19,9 +19,12 @@ from django.urls import path
from demo import views
urlpatterns = [
path('', views.index, name='index'),
path('subjects/<int:no>', views.show_teachers),
path('good/<int:no>', views.make_good_comment),
path('bad/<int:no>', views.make_bad_comment),
path('', views.login),
path('login/', views.login),
path('register/', views.register),
path('subjects/', views.show_subjects, name='sub'),
path('subjects/<int:no>/', views.show_teachers),
path('good/<int:no>/', views.make_comment),
path('bad/<int:no>/', views.make_comment),
path('admin/', admin.site.urls),
]

38
Day41-55/code/hellodjango/templates/demo/login.html 100644
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@ -0,0 +1,38 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>用户登录</title>
<style>
#login {
width: 250px;
margin: 20px auto;
}
#login form div {
margin: 10px 0;
}
</style>
</head>
<body>
<h1>用户登录</h1>
<hr>
<div id="login">
<p style="color: red; font-size: 12px;">{{ hint }}</p>
<form action="/login/" method="post">
{% csrf_token %}
<div>用户名: </div>
<div>
<input type="text" name="username" required>
</div>
<div>密码: </div>
<div>
<input type="password" name="password" required>
</div>
<div>
<input type="submit" value="登录">
</div>
</form>
<a href="/register">注册新用户</a>
</div>
</body>
</html>

42
Day41-55/code/hellodjango/templates/demo/register.html 100644
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@ -0,0 +1,42 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>用户注册</title>
<style>
#login {
width: 250px;
margin: 20px auto;
}
#login form div {
margin: 10px 0;
}
</style>
</head>
<body>
<h1>用户注册</h1>
<hr>
<div id="login">
<p style="color: red; font-size: 12px;">{{ hint }}</p>
<form action="/register/" method="post">
{% csrf_token %}
<div>用户名: </div>
<div>
{{ f.username }}
</div>
<div>密码: </div>
<div>
{{ f.password }}
</div>
<div>邮箱: </div>
<div>
{{ f.email }}
</div>
<div>
<input type="submit" value="注册">
</div>
</form>
<a href="/">返回登录</a>
</div>
</body>
</html>

0
Day41-55/code/hellodjango/templates/demo/index.html → Day41-55/code/hellodjango/templates/demo/subject.html
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19
Day41-55/code/hellodjango/templates/demo/teacher.html
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@ -42,8 +42,8 @@
<p>{{ x.intro }}</p>
<p><strong>教学理念</strong></p>
<p>{{ x.motto }}</p>
<a href="/good/{{ x.no }}" class="button">好评({{ x.good_count }})</a>
<a href="/bad/{{ x.no }}" class="button">差评({{ x.bad_count }})</a>
<a href="/good/{{ x.no }}" class="button">好评({{ x.gcount }})</a>
<a href="/bad/{{ x.no }}" class="button">差评({{ x.bcount }})</a>
</div>
<div class="potrait">
{% if x.photo %}
@ -58,12 +58,19 @@
$(function() {
$('.basic .button').on('click', function(evt) {
evt.preventDefault();
var a = $(evt.target);
var url = a.attr('href');
$.getJSON(url, function(json) {
var $a = $(evt.target);
var url = $a.attr('href');
$.ajax({
'url': url,
'type': 'get',
'data': {},
'dataType': 'json',
'success': function(json) {
if (json.code == 200) {
a.text(json.result);
$a.text(json.result);
}
},
'error': function() {}
});
});
});