CRM 日期字段过滤功能——第21天

1、CRM 日期字段过滤功能

日期这个字段不像之前的数据是有choices、ForeignKey类型，在数据库中日期是有两个类型"DateTimeField","DateField"，也不像之前的有下拉框数据让你选择，

所以日期得自己先保存几个时间点，然后在判断如果是时间类型的筛选数数在select name 加上gte属于大于这个时间的数据展示在页面 <select name="_gte"></select>

先导入时间模块datetime,timedelta 使用django的时间模块如下：

from django.utils.timezone import datetime,timedelta

1.1 判断字段的类型在"DateTimeField","DateField",创建的每个时间点放在一个list里面，然后去遍历他，然后加上<option></option>,再<select name="_gte"></select>,注如果不是时间类型name是不要加上_gte的，代码如下：

    if type(filed_obj).__name__ in ["DateTimeField","DateField"]:
        selected =''
        today_ele = datetime.now().date()
        date_eles = []
        date_eles.append(("今天",today_ele))
        date_eles.append(("7天",today_ele-timedelta(days=7)))
        date_eles.append(("本月",today_ele.replace(day=1)))
        date_eles.append(("半年",today_ele-timedelta(days=180)))
        date_eles.append(("一年",today_ele.replace(month=1,day=1)))
        for dateEle in date_eles:
            select_ele += '''<option value='%s'%s>%s</option>''' % (dateEle[1], selected,dateEle[0])

        condtion_name = "%s__gte"%(condtion)

    else:
        condtion_name = condtion

#今天 
today_time = datetime.now().date()
>>> today_time
datetime.date(2019, 8, 11)

#这个月初
>>> today_mouth = today_time.replace(day=1)
>>> today_mouth
datetime.date(2019, 8, 1)

#今年初
>>> today_year = today_time.replace(month=1,day=1)
>>> today_year
datetime.date(2019, 1, 1)

完整代码如下：

@register.simple_tag
def render_filter_ele(condtion,admin_class,filter_condtions):
    #后台返回筛选框里面的值
    """
    :param condtion: 需要过滤的字段名
    :param admin_class: 比如Customer
    :param filter_condtions: 前端请求数据的json
    :return:
    """
    select_ele = '''<select class="form-control" name='{condtion_name}'><option value=''>----</option>'''
    filed_obj = admin_class.model._meta.get_field(condtion)
    #判断如果是choices类型
    if filed_obj.choices:
        selected=''
        for choice_item in filed_obj.choices:
            print("choice", choice_item, filter_condtions.get(condtion), type(filter_condtions.get(condtion)))
            if filter_condtions.get(condtion) == str(choice_item[0]):
                selected = "selected"

            select_ele+='''<option value='%s' %s>%s</option>'''%(choice_item[0],selected,choice_item[1])
            selected=''
    #判断如果是属于ForeignKey类型的时候
    if type(filed_obj).__name__ == 'ForeignKey':
        selected = ''
        for choice_item in filed_obj.get_choices()[1:]:
            if filter_condtions.get(condtion) == str(choice_item[0]):
                selected ="selected"


            select_ele += '''<option value='%s' %s>%s</option>''' % (choice_item[0], selected, choice_item[1])
            selected = ''
    #判断是属于日期类型的时候
    if type(filed_obj).__name__ in ["DateTimeField","DateField"]:
        selected =''
        today_ele = datetime.now().date()
        date_eles = []
        date_eles.append(("今天",today_ele))
        date_eles.append(("7天",today_ele-timedelta(days=7)))
        date_eles.append(("本月",today_ele.replace(day=1)))
        date_eles.append(("半年",today_ele-timedelta(days=180)))
        date_eles.append(("一年",today_ele.replace(month=1,day=1)))
        for dateEle in date_eles:
            select_ele += '''<option value='%s'%s>%s</option>''' % (dateEle[1], selected,dateEle[0])

        condtion_name = "%s__gte"%(condtion)

    else:
        condtion_name = condtion

    select_ele+="<select/>"

    select_ele= select_ele.format(condtion_name=condtion_name)

    return mark_safe(select_ele)