django form 和modelform样式设置

 

目录　

　　1.form通过attr设置属性
　　2.输入框设置表单状态
　　3.modelform的使用
　　4.结合modelform 使用for循环生成输入框
　　5.基于init构造方法设置样式
　　6.基本增删改查案例
　　7.基于ajax和sweetalert实现删除操作

以text input框为例
模板文件需要有bootstrape


from django import forms

class DepForm(forms.Form):
    name = forms.CharField(label="部门名称",widget=forms.TextInput(attrs={'class':'form-control'}))  #可以添加多个
    count = forms.IntegerField(label="部门人数")   #IntegerField没有这个属性

def department_add(request):
    form_obj = DepForm()
    return  render(request,'department_add.html',{'form_obj':form_obj})

模板文件如下:
{% extends 'layout.html' %}
{% block content %}

    <div class="container">
        <div style="margin-top: 20px">
           <form class="form-horizontal">
  <div class="form-group">
    <label for="{{ form_obj.name.id_for_label }}" class="col-sm-2 control-label">{{ form_obj.name.label }}</label>
    <div class="col-sm-8">
{#      <input type="email" class="form-control" id="inputEmail3" placeholder="Email">#}
        {{ form_obj.name }}
        {{ form_obj.name.errors }}
    </div>
  </div>

   <div class="form-group">
    <label for="{{ form_obj.count.id_for_label }}" class="col-sm-2 control-label">{{ form_obj.count.label }}</label>
    <div class="col-sm-8">
        {{ form_obj.count }}
        {{ form_obj.count.errors }}
    </div>
  </div>

  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
      <button type="submit" class="btn btn-default">Sign in</button>
    </div>
  </div>
</form>

        </div>
    </div>
{% endblock %}
 输入框设置表单状态,错误时显示红色错误提示

#通过if 判断和bootstrape实现
{% extends 'layout.html' %}
{% block content %}

    <div class="container">
        <div style="margin-top: 20px">
           <form class="form-horizontal" method="post" action="" novalidate>
               {% csrf_token %}
  <div class="form-group {% if form_obj.name.errors %}has-error{% endif %}">

    <label for="{{ form_obj.name.id_for_label }}" class="col-sm-2 control-label">{{ form_obj.name.label }}</label>
    <div class="col-sm-8">

        {{ form_obj.name }}
         <span  class="help-block">{{ form_obj.name.errors.0 }}</span>

    </div>
  </div>

   <div class="form-group">
    <label for="{{ form_obj.count.id_for_label }}" class="col-sm-2 control-label">{{ form_obj.count.label }}</label>
    <div class="col-sm-8">
{#      <input type="email" class="form-control" id="inputEmail3" placeholder="Email">#}
        {{ form_obj.count }}
        {{ form_obj.count.errors.0 }}
    </div>
  </div>

  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
      <button type="submit" class="btn btn-default">Sign in</button>
    </div>
  </div>
</form>

        </div>
    </div>
{% endblock %}
 

设置modelform

class DepForm(forms.ModelForm):
    class Meta:
        #models 根据某一个模型生成对应的字段
        model = models.Department  #model命令否则会报错
        fields = '__all__'  #拿所有的字段 fields = ['name'] 拿想拿的字段
        #exclude = ['count'] 排除不想要的字段
        # labels = {
        #     'name':'名称'    #设置提示
        # }
        widgets = {
            'name':forms.TextInput(attrs={'class':'form-control'})   #设置样式
        }

        error_messages = {
            'name':{'required':'此项是必填的'}                    #设置错误提示信息
        }

通过for循环生成多个输入框

{% extends 'layout.html' %}
{% block content %}

    <div class="container">
        <div style="margin-top: 20px">
            <form class="form-horizontal" method="post" action="" novalidate>
                {% csrf_token %}
                {% for field in form_obj %}
                    <div class="form-group {% if form_obj.name.errors %}has-error{% endif %}">

                        <label for="{{ field.id_for_label }}"
                               class="col-sm-2 control-label">{{ field.label }}</label>
                        <div class="col-sm-8">
                            {{ field }}
                            <span class="help-block">{{ field.errors.0 }}</span>

                        </div>
                    </div>

                {% endfor %}
            
                <div class="form-group">
                    <div class="col-sm-offset-2 col-sm-10">
                        <button type="submit" class="btn btn-default">Sign in</button>
                    </div>
                </div>
            </form>

        </div>
    </div>
{% endblock %}

通过init方法统一设置样式

class DepForm(forms.ModelForm):
    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)  #初始化父类方法
        print(self.fields)
        for field in self.fields.values():
            field.widget.attrs = {'class':'form-control'}

    class Meta:
        #models 根据某一个模型生成对应的字段
        model = models.Department  #model命令否则会报错
        fields = '__all__'  #拿所有的字段 fields = ['name'] 拿想拿的字段


def department_add(request):
    form_obj = DepForm()
    if request.method == 'POST':
        form_obj = DepForm(request.POST)
        if form_obj.is_valid():
            """
            数据校验成功
            """
            print(form_obj.cleaned_data)
            # models.Department.objects.create(name=form_obj.cleaned_data.get('name'),count=form_obj.cleaned_data['count'])
            #models.Department.objects.create(**form_obj.cleaned_data)
　　　　　　　　form_obj.save() #直接把数据插入数据库里面
            return redirect("/department_list/")
    return  render(request,'department_add.html',{'form_obj':form_obj})

查询案例

后台代码
def department_list(request):
    all_depart = models.Department.objects.all()
    return render(request,'department_list.html',{'all_depart':all_depart})


模板代码
{% extends 'layout.html' %}
{% block content %}
    <div class="container" style="margin-top: 10px">
        <table class="table table-bordered">
    <thead>
        <tr>
            <th>序号</th>
            <th>名称</th>
            <th>人数</th>
            <th>操作</th>
        </tr>
    </thead>
    <tbody>
        {% for depart in all_depart %}
            <tr>
                <td>{{ forloop.counter }}</td>
                <td>{{ depart.name }}</td>
                <td>{{ depart.count }}</td>
                <td>
                    <a href="{% url 'department_edit' depart.pk %}"><i class="fa fa-edit"></i>
                    </a>
                    <a href="{% url 'department_del' depart.pk %}"><i class="fa fa-trash-o"></i></a>
                </td>
            </tr>
        {% endfor %}

    </tbody>
</table>
    </div>

{% endblock %}

添加案例

后端代码
def department_add(request):
    form_obj = DepForm()
    if request.method == 'POST':
        form_obj = DepForm(request.POST)
        if form_obj.is_valid():
            """
            数据校验成功
            """
            print(form_obj.cleaned_data)
            # models.Department.objects.create(name=form_obj.cleaned_data.get('name'),count=form_obj.cleaned_data['count'])
            models.Department.objects.create(**form_obj.cleaned_data)
            return redirect("/department_list/")
    return  render(request,'department_add.html',{'form_obj':form_obj})

模板代码
{% extends 'layout.html' %}
{% block content %}

    <div class="container">
        <div style="margin-top: 20px">
            <form class="form-horizontal" method="post" action="" novalidate>
                {% csrf_token %}
                {% for field in form_obj %}
                    <div class="form-group {% if form_obj.name.errors %}has-error{% endif %}">

                        <label for="{{ field.id_for_label }}"
                               class="col-sm-2 control-label">{{ field.label }}</label>
                        <div class="col-sm-8">
                            {{ field }}
                            <span class="help-block">{{ field.errors.0 }}</span>

                        </div>
                    </div>

                {% endfor %}

                <div class="form-group">
                    <div class="col-sm-offset-2 col-sm-10">
                        <button type="submit" class="btn btn-default">提交</button>
                    </div>
                </div>
            </form>

        </div>
    </div>
{% endblock %}

编辑案例

后端代码
def department_edit(request,pk):
    obj = models.Department.objects.filter(pk=pk).first()
    form_obj = DepForm(instance=obj)
    if request.method == 'POST':
        form_obj = DepForm(request.POST,instance=obj) #包含原始数据和新数据
        if form_obj.is_valid():
            form_obj.save()
            return redirect('/department_list/')


    return render(request, 'department_edit.html', {'form_obj': form_obj})

模板代码
{% extends 'layout.html' %}
{% block content %}

    <div class="container">
        <div style="margin-top: 20px">
            <form class="form-horizontal" method="post" action="" novalidate>
                {% csrf_token %}
                {% for field in form_obj %}
                    <div class="form-group {% if form_obj.name.errors %}has-error{% endif %}">

                        <label for="{{ field.id_for_label }}"
                               class="col-sm-2 control-label">{{ field.label }}</label>
                        <div class="col-sm-8">
                            {{ field }}
                            <span class="help-block">{{ field.errors.0 }}</span>

                        </div>
                    </div>

                {% endfor %}

                <div class="form-group">
                    <div class="col-sm-offset-2 col-sm-10">
                        <button type="submit" class="btn btn-default">提交</button>
                    </div>
                </div>
            </form>

        </div>
    </div>
{% endblock %}

简单删除案例

def department_del(request,pk):
    obj = models.Department.objects.filter(pk=pk).first().delete() #根据pk找到对象
    return redirect('department_list')

通过ajax和sweetalert删除数据案例

https://sweetalert.js.org/guides/

后端代码
from django.http.response import JsonResponse
def department_del(request,pk):
    ret = {'status':0,'msg':'删除成功'}
    obj = models.Department.objects.filter(pk=pk).first().delete() #根据pk找到对象
    # return redirect('department_list')
    print(pk)
    return JsonResponse(ret)

模板文件代码
{% extends 'layout.html' %}
{% load static %}
{% block content %}

    <div class="container" style="margin-top: 10px">
        {% csrf_token %}
        <table class="table table-bordered">
            <thead>
            <tr>
                <th>序号</th>
                <th>名称</th>
                <th>人数</th>
                <th>操作</th>
            </tr>
            </thead>
            <tbody>
            {% for depart in all_depart %}
                <tr>
                    <td>{{ forloop.counter }}</td>
                    <td>{{ depart.name }}</td>
                    <td>{{ depart.count }}</td>
                    <td>
                        <a href="{% url 'department_edit' depart.pk %}"><i class="fa fa-edit"></i>
                        </a>
                        <a href=""><i url="{% url 'department_del' depart.pk %}" class="fa fa-trash-o"></i></a>
                    </td>
                </tr>
            {% endfor %}

            </tbody>
        </table>
    </div>

{% endblock %}

{% block js %}

    <script>

        $('.fa-trash-o').click(function () {
            swal({
                title: "Are you sure?",
                text: "Once deleted, you will not be able to recover this imaginary file!",
                icon: "warning",
                buttons: true,
                dangerMode: true,
            })
                .then((willDelete) => {
                    if (willDelete) {
                        $.ajax({
                            url: $(this).attr('url'),
                            type: 'post',
                            headers: {
                                'x-csrftoken': $('input[name="csrfmiddlewaretoken"]').val(),
                            },
                            success: (ret) => {
                                if (!ret.status) {
                                    $(this).parent().parent().parent().remove();
                                    swal("Poof! Your imaginary file has been deleted!", {
                                        icon: "success",
                                    });
                                }
                            }

                        });


                    } else {
                        swal("Your imaginary file is safe!");
                    }
                });


        })
    </script>
{% endblock %}

ps:测试的过程中有点小瑕疵,但是功能基本上都能实现.