from django.shortcuts import render
from app01.dadforms import DetailForm, VerifyForm


def index(request):
    # 創建表單對象
    detail_form = DetailForm(request.POST)
    # 驗證輸入表單數據
    detail_form.is_valid()
    # 打印輸入的正確數據
    print(detail_form.clean())
    return render(request, ‘index.html‘, locals())


 
def field_verified(request):
    if request.method == ‘GET‘:
        # 創建表單對象
        verify_form = VerifyForm()
        return render(request, ‘verify.html‘, locals())
    elif request.method == ‘POST‘:
        print(‘我是post方法‘)
        # 創建表單對象
        verify_form = VerifyForm(request.POST, request.FILES)
        
 
# 驗證字段
        verify_form.is_valid()
        # 打印正確字段
        print(verify_form.clean())
        print(verify_form.errors.as_json())
    # errors = verify_form.errors
    return render(request, ‘verify.html‘, locals())

from django import forms
from django.forms import fields
# 導入插件模塊,以自定義input標簽
from
 
 django.forms import widgets


class DetailForm(forms.Form):
    """1.forms中的__init__方法引入了fields等模塊的內容,
    所以,可以這麽寫:forms.CharField()"""
    # 用戶名驗證
    user = fields.CharField(
        # widget=widgets.PasswordInput
        widget=widgets.TextInput(attrs={
            ‘class‘:‘c1‘,
            ‘id‘:‘p‘,
            # 默認顯示值
            ‘placeholder‘:‘用戶名‘
        })
        # 2.TextInput()文本輸入框有一個attr方法,可以給input框添加屬性;
    )
    # 3.選項框
    # sex = fields.ChoiceField(
    #     choices=[
    #         (1, ‘男‘),
    #         (2, ‘女‘)
    #     ]
    # )
    # 4.通過CharField()重現選項框,通過字段指定插件
    sex = fields.CharField(
        widget = widgets.Select(
            choices=[
                (1, ‘男‘),
                (2, ‘女‘)
            ]
        )
    )
    # 表單的作用:1.驗證;2.生成html標簽;3.數據轉換;
    # 內部會對字符串做一個類型轉換,轉換成數字;
    score = fields.IntegerField()
    addr = fields.CharField(
        widget = widgets.RadioSelect(
            choices=[
                (1, ‘上海‘),
                (2, ‘溫州‘)
            ]
        )
    )


# ---------------------------- 字段驗證
from django.core.validators import RegexValidator


class VerifyForm(forms.Form):
    """
        required=True, widget=None, label=None, initial=None,
        help_text=‘‘, error_messages=None, show_hidden_initial=False,
        validators=[], localize=False, label_suffix=None(label後綴符)
    """
    # CharField()中__init__下有長度,以及是否取出空白的參數;(strip=True)
    # 而且繼承Field()中的所有初始字段;
    user_name = fields.CharField(
        max_length=6,
        min_length=6,
        # 1.默認必填,False表示可以為空;
        required=True,
        # 2.設置默認值
        initial=‘大山的姑娘‘,
        # 3.自定義驗證規則
        validators=[RegexValidator(r‘159[0-9]+$‘, ‘aaaaaaa‘, code=‘d1‘), RegexValidator(r‘^[0-9]+$‘, ‘bbbbbbb‘, code=‘d2‘)],
        # 4.錯誤信息,error_messages優先級比自定義規則的驗證錯誤信息要高,會覆蓋上面的;
        #   如果自定義驗證有多個規則,可以通過RegexValidator裏的第3個參數code指定顯示驗證信息;
        #   錯誤信息裏,默認兩個參數required和invalid(必須,格式);
        #   還有max_length等,前面加什麽參數,code就是什麽;
        error_messages={‘required‘: ‘不能為空‘, ‘d1‘: ‘1111111‘, ‘d2‘:‘22222222‘, ‘max_length‘: ‘too long‘},

        # label,HTML中需要添加{{表單對象.label}}
        label=‘名字‘,
        label_suffix=‘::::‘,
        widget=widgets.TextInput(attrs={
            ‘class‘: ‘a1‘,
            ‘placeholder‘: ‘山炮‘
        }),
        # 是否可以編輯
        disabled=True
    )
    # 5.數字,有數值的限制;
    user_score = fields.IntegerField(
        max_value=20,
        required=True,
        initial=1,
        error_messages={‘required‘: ‘not blank‘, ‘max_value‘: ‘num too big‘}

    )
    # 6.DecimalField繼承IntegerField
    user_tax = fields.DecimalField(
        max_digits=4,  # 總長度
        decimal_places=2,  # 小數位長度
        # error_messages={‘invalid‘: ‘geshicuowu‘}
    )
    # 7.正則表達式input框
    user_tel = fields.RegexField(
        max_length=6,
        regex=(r‘159[0-9]+$‘),
        error_messages={‘invalid‘: ‘not true‘, ‘max_length‘:‘tooLong‘},
        # [{"message": "not true", "code": "invalid"}] code表示錯誤類型
        ),
    # 8.文件上傳
    # 註意兩點:
    #   1.form表單中加入enctype="multipart/form-data"
    #   2.視圖函數中創建表單對象時,obj = Myform(request.POST, request.FILES)
    user_file = fields.FileField(
        allow_empty_file=False,
    ),
    # 圖片上傳,ImageField繼承FileField
    user_pic = fields.ImageField(
        allow_empty_file=False,
    )
    # 9.ChoiceField選擇框,默認是Select框;
    #   TypedChoiceField()
    user_course = fields.TypedChoiceField(
        # 類型轉化的匿名函數
        coerce = lambda x: int(x),
        choices=[
            (1, ‘語文‘),
            (2, ‘數學‘),
            (3, ‘未填寫‘)
        ],
        initial=3,
    )
    # 10.多選框MultipleChoiceField()
    user_class = fields.MultipleChoiceField(
        choices=[
            (1, ‘09-03‘),
            (2, ‘09-02‘),
            (3, ‘09-01‘)
        ],
        initial=[2, 3],
    )
    # 11.組合的字段驗證
    user_join = fields.ComboField(
        fields=[
            fields.CharField(max_length=6),
            fields.EmailField(),
        ]
    )
    # 12.多個框組合,0577-66666
    user_local_phone = fields.SplitDateTimeField()

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="verify.html" method="POST" enctype="multipart/form-data">
        {% csrf_token %}
        {{ verify_form.user_name }}<br>
        {{ verify_form.user_score }}<br>
        {{ verify_form.user_tax }}<br>
        {{ verify_form.user_tel }}<br>
        {{ verify_form.user_file }}<br>
        {{ verify_form.user_pic }}<br>
        {{ verify_form.user_course }}<br>
        {{ verify_form.user_class }}<br>
        {{ verify_form.user_join }}<br>
        {{ verify_form.user_local_phone }}<br>

        <input type="submit", value="提交">
    </form>
</body>
</html>

Form驗證隨筆 | Django