CRUD组件的高阶使用

1.list页面自定列显示:

class PermissionConfig(sites.AryaConfig):

 

    def dabo(self, obj=None, is_header=False):

        if is_header:

            return "大波"

        else:

            return "大波-"+obj.caption

    list_display = ["caption", "url", dabo,"menu"]

 

sites.site.register(models.Permission, PermissionConfig)

 

2.功能界面更改:重写add_view使其界面展示url list---->

获取url_list

def get_all_url(patterns, prev, is_first=False, result=[]):
    """
    [
        (ur1,ur1,)
        (ur1,ur1,)
        (ur1,ur1,)
        (ur1,ur1,)
    ]
    :param patterns:
    :param prev:
    :param is_first:
    :param result:
    :return:
    """
    if is_first:
        result.clear()
    for item in patterns:
        v = item._regex.strip("^$")
        if isinstance(item, RegexURLPattern):
            val = prev + v
            result.append((val, val,))
        else:
            get_all_url(item.urlconf_name, prev + v)

    return result

同时在permission_add.html和permission_add_popup.html适当位置添加如下代码用以渲染

<div>

    <h3>url-list</h3>

    <ul>

        {% for url in url_list %}

            <li>{{ url.0 }}</li>

        {% endfor %}

    </ul>

 

</div>

3.重写ModelForm深度定制功能页:编写PermissionModelForm以完成url以choice方式实现.

注意事项:

class PermissionModelForm(ModelForm):

    url=fields.ChoiceField() #若该字段名和Permission中的某字段重名,则会将该字段替换,不重名,则添加新的

    #from pro_crm.urls import urlpatterns
    #url.choices=get_all_url(urlpatterns,"/",True) #此种赋值方式1:会使urlpatterns提前执行,引发错误
                                                  #2.当新增url时,不能时时刷新,因为PermissionModelForm声明时会取一遍url,

                                                  #当用其new对象时,不会再去获取新的url,因此需要将获取url的逻辑写在__init__中

实现代码:

class PermissionModelForm(ModelForm):
    url = fields.ChoiceField()  # 若该字段名和Permission中的某字段重名,则会将该字段替换,不重名,则添加新的

    # from pro_crm.urls import urlpatterns
    # url.choices=get_all_url(urlpatterns,"/",True) #此种赋值方式1:会使urlpatterns提前执行,引发错误
    # 2.当新增url时,不能时时刷新,因为PermissionModelForm声明时会取一遍url,
    # 当用其new对象时,不会再去获取新的url,因此需要将获取url的逻辑写在__init__中

    class Meta:
        model = models.Permission
        fields = "__all__"

    def __init__(self, *args, **kwargs):
        super(PermissionModelForm, self).__init__(*args, **kwargs)
        from pro_crm.urls import urlpatterns
        self.fields["url"].choices = get_all_url(urlpatterns, "/", True)

4.list页面foreignKey和ManyToMany字段的显示,本质上是list_display列表中添加函数,在函数中控制显示逻辑choices

code:

class ClassListConfig(sites.AryaConfig):

    def course_display(self, obj=None, is_header=False):
        if is_header:
            return "班级"
        else:
            tpl = "{}({}期)".format(obj.course.name,obj.semester)
            return tpl

    def teachers_display(self,obj=None,is_header=False):
        if is_header:
            return "任课老师"
        else:
            teachers = obj.teachers.all()
            result = []
            for teacher in teachers:
                tpl = "<span>{}</span>".format(teacher.name)
                result.append(tpl)
            return mark_safe(" ".join(result))

    list_display = ["school",course_display,"tutor",teachers_display,"price",]

sites.site.register(models.ClassList,ClassListConfig)

5.list页面choices的显示:

class CustomerConfig(sites.AryaConfig):

    ....

    def gender_display(self,obj=None,is_header=False):

        if is_header:

            return "性别"

        else:

            return obj.get_gender_display()

 

    list_display = ["name",gender_display,"qq","consultant",courses_display]

sites.site.register(models.Customer,CustomerConfig)

 

 

 6.date的显示

    def date(self, obj=None, is_header=False):
        if is_header:
            return "交款日期"
        else:
            return obj.date.strftime("%Y-%m-%d")

    list_display = ["customer","class_list",pay_type_choices,"paid_fee","consultant",date]

 7.list_filter的配置

class CustomerConfig(sites.AryaConfig):

    .......

    list_filter = [
        # sites.FilterOption("name",False,lambda x:x.name,lambda x:x.name),#这种配置无意义
        sites.FilterOption("consultant",False,condition=Q(depart=1)),#传条件以显示筛选项
        sites.FilterOption("course",True),#咨询课程
        sites.FilterOption("gender",False),#choices

    ]
sites.site.register(models.Customer,CustomerConfig)