Dajngo学习笔记（3）

学习笔记（3）"/>

Dajngo学习笔记（3）

电话号码管理

查看功能

class PrettyNum(models.Model):mobile=models.CharField(verbose_name="电话号",max_length=11)price=models.IntegerField(verbose_name="价格")level_choice=((1,"一级"),(2,"二级"),(3,"三级"))level=models.SmallIntegerField(verbose_name="级别",choices=level_choice,default=1)status_choice=((1,"未占用"),(2,"占用"))status=models.SmallIntegerField(verbose_name="状态",choices=status_choice,default=1)

makemigrationsmigrate

def num_list(request):queryset=models.PrettyNum.objects.all().order_by("-level")#-表示递减  无表示递增for obj in queryset:print(obj.id,obj.mobile,obj.price,obj.get_level_display(),obj.get_status_display())return render(request,"num_list.html",{"queryset":queryset})

{% extends "layout.html" %}{% block content %}<div><div class="container"><div style = "margin-bottom: 10px"><a class="btn btn-primary" href="/num/add" >
{#              target="_blank"  在新的页面产生#}<span class="glyphicon glyphicon-plus-sign" aria-hidden="true"></span>新建电话号</a></div><div class="panel panel-default"><!-- Default panel contents --><div class="panel-heading"><span class="glyphicon glyphicon-th-list" aria-hidden="true"> 电话号管理</span></div><!-- Table --><table class="table table-bordered"><thead><tr><th>#</th><th>ID</th><th>电话号</th><th>价格</th><th>等级</th><th>状态</th><th>操作</th></tr></thead><tbody>{% for obj in queryset %}<tr><th scope="row">{{ obj.id }}</th><td>{{ obj.id }}</td><td>{{ obj.mobile }}</td><td>{{ obj.price }}</td><td>{{ obj.get_level_display }}</td><td>{{ obj.get_status_display }}</td><td><a class = "btn btn-primary btn-xs" href="/num/{{ obj.id }}/edit/">编辑</a><a class = "btn btn-danger btn-xs" href="/num/delete/?nid={{ obj.id }}">删除</a></td></tr>{% endfor %}</tbody></table></div></div>
</div>{% endblock %}

新增功能

其中可以对数据进行验证

class NumModelForm(forms.ModelForm):# mobile=forms.CharField(#     label="电话号",#     validators=[RegexValidator(r"^1[3-9]\d{9}","电话号格式错误")],# )class Meta:model=models.PrettyNum#fields=["mobile","price","level","status"]fields="__all__"#选择全部字段#exclude=["level"]#排除level字段def __init__(self,*args,**kwargs):super().__init__(*args,**kwargs)for name,field in self.fields.items():field.widget.attrs={"class":"form-control","placeholder":field.label}#钩子方法def clean_mobile(self):txt_mobile=self.cleaned_data["mobile"]exists=models.PrettyNum.objects.filter(mobile=txt_mobile).exists()if exists:raise ValidationError("手机号存在")if len(txt_mobile)!=11:#验证不通过raise ValidationError("格式错误")return txt_mobile

{% extends "layout.html" %}{% block content %}
<div><div class="panel panel-default"><div class="panel-heading"><h3 class="panel-title">新建面板</h3></div><div class="panel-body" ><form method="post" novalidate>{% csrf_token %}{% for field in form %}<div class="form-group"><label> {{ field.label }}</label>{{ field  }}<span style="color: red">{{ field.errors.0 }}</span></div>{% endfor %}<button type="submit" class="btn btn-primary">保存</button></form></div>
</div>
</div>{% endblock %}

如果不符合要求

编辑

class NumEditModelForm(forms.ModelForm):mobile=forms.CharField(disabled=True,label="手机号")class Meta:model=models.PrettyNum#fields=["mobile","price","level","status"]fields="__all__"#选择全部字段#exclude=["mobile"]#排除level字段def __init__(self,*args,**kwargs):super().__init__(*args,**kwargs)for name,field in self.fields.items():field.widget.attrs={"class":"form-control","placeholder":field.label}
def num_edit(request,nid):row_object = models.PrettyNum.objects.filter(id=nid).first()if request.method == "GET":form = NumEditModelForm(instance=row_object)return render(request, "num_edit.html", {"form": form})form = NumEditModelForm(data=request.POST, instance=row_object)if form.is_valid():form.save()return redirect("/num/list/")return render(request, "num_edit.html", {"form": form})

{% extends "layout.html" %}{% block content %}
<div class="container">
<div><div class="panel panel-default"><div class="panel-heading"><h3 class="panel-title">新建面板</h3></div><div class="panel-body" ><form method="post" novalidate>{% csrf_token %}{% for field in form %}<div class="form-group"><label> {{ field.label }}</label>{{ field  }}<span style="color: red">{{ field.errors.0 }}</span></div>{% endfor %}<button type="submit" class="btn btn-primary">保存</button></form></div>
</div>
</div></div>
{% endblock %}

编辑时候不允许手机号重复

class NumEditModelForm(forms.ModelForm):#mobile=forms.CharField(disabled=True,label="手机号")#不允许编辑手机号class Meta:model=models.PrettyNum#fields=["mobile","price","level","status"]fields="__all__"#选择全部字段#exclude=["mobile"]#排除level字段def __init__(self,*args,**kwargs):super().__init__(*args,**kwargs)for name,field in self.fields.items():field.widget.attrs={"class":"form-control","placeholder":field.label}def clean_mobile(self):txt_mobile=self.cleaned_data["mobile"]txt_id = self.instance.pk#当前编辑的idexists=models.PrettyNum.objects.exclude(id=txt_id).filter(mobile=txt_mobile).exists()if exists:raise ValidationError("手机号存在")if len(txt_mobile)!=11:#验证不通过raise ValidationError("格式错误")return txt_mobile