【Django】搭建简易管理系统基本流程及相关方法_django用户管理系统怎么做

开发手机号管理系统，实践各个功能

文件一：url.py 路由配置
1、定义id后，views对应方法，需要传参

urlpatterns = [
    # path('admin/', admin.site.urls),   
    path('patty/list/',views.patty_list),
    path('patty/add/',views.patty_add),
    path('patty/<int:uid>/delate/',views.patty_delate),
    path('patty/<int:uid>/edit/',views.patty_edit),
]
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文件二：model.py 常见创建字段方法：

class Pattynum(models.Model):
    mobile = models.CharField(verbose_name='手机', max_length=11)
    piac = models.IntegerField(verbose_name='价格',default=0)
    level_choices = (
        (1,'一级'),
        (2,'二级'),
        (3,'三级'),
    )
    level = models.SmallIntegerField(verbose_name='级别',choices=level_choices,default=1)
    ctime = models.DateField(verbose_name='创建时间',default='2022-10-21')
    status_choices = (
        (1,'已售'),
        (2,'未售'),
    )
    status = models.SmallIntegerField(verbose_name='上架',choices=status_choices,default=2)
    def __str__(self):
        return self.mobile
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文件三：views.py 调用方法：

from django import forms
# 导入正则表达式
from django.core.validators import RegexValidator
# 钩子方法 返回错误信息
from django.core.exceptions import ValidationError
class Pattynu(forms.ModelForm):
    # 校验一 【正则表达式】校验手机号是否正确
    mobile = forms.CharField(
        label='手机号',
        validators=[RegexValidator(r'^1[3,5,7,8]\d{9}$','手机格式错误！')]
    )
    class Meta:
        model = Pattynum
        fields = ['mobile','piac','level','ctime','status']

    # 列表字段添加样式属性方法
    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)
        for name,filed in self.fields.items():
            filed.widget.attrs={'class':'form-control','placeholder':'请输入'+filed.label}

    # 校验二 【钩子方法】校验手机号是否正确
    def clean_mobile(self):
        text_mobile = self.cleaned_data['mobile']
        if len(text_mobile) != 11:
            raise ValidationError('格式错误')
        return text_mobile
# 增加
def patty_add(request):
    if request.method == 'GET':
        forms = Pattynu()
        return render(request,'patty_add.html',locals())
    forms = Pattynu(data=request.POST)
    if forms.is_valid():
        forms.save()
        return redirect('/patty/list/')
    return render(request,'patty_add.html',locals())

# 编辑
def patty_edit(request,uid):
    staff = Pattynu.objects.filter(id=uid).first()
    if request.method == 'GET':
        form = Pattynu(instance=staff)   # 先实例化对象，然后用instance=实例化对象，就可以将默认值携带编辑页面
        return render(request,'patty_edit.html',locals())
    form = Pattynu(data=request.POST, instance=staff)
    if form.is_valid():
        # 默认保存的是用户输入的所有数据，如果想要再用户输入以外增加一点值
        # form. instance.字段名 = 值
        form.save()
        return redirect('/patty/list/')
    return render(request, 'patty_edit.html', locals())

# 删除
def patty_delate(request,uid):
    Pattynum.objects.filter(id=uid).delete()
    return redirect('/patty/list/')
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文件四：patty_add.html / patty_edit.html 公用模板调用：

<form method="post" style="margin-top: 20px;" novalidate>
            {% csrf_token %}
            <fieldset>
                {% for obj in forms %}
                <div class="form-group">
                    <label>{{ obj.label }}</label>
                    {{ obj }}
                    <span style="color: red;">{{ obj.errors }}</span>
                </div>
                {% endfor %}
                <button type="submit" class="btn btn-primary">提 交</button>
            </fieldset>
 </form>
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