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)
makemigrations
migrate
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">
<div class="panel-heading"><span class="glyphicon glyphicon-th-list" aria-hidden="true"> 电话号管理span>div>
<table class="table table-bordered">
<thead>
<tr>
<th>#th>
<th>IDth>
<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id
exists=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