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from django import forms
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from django.contrib.auth import get_user_model, password_validation
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from django.contrib.auth.forms import AuthenticationForm, UserCreationForm
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from django.core.exceptions import ValidationError
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from django.forms import widgets
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from django.utils.translation import gettext_lazy as _
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from . import utils
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from .models import BlogUser
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# ------------------------- 登录表单 -------------------------
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class LoginForm(AuthenticationForm):
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"""登录表单类（继承 Django 内置 AuthenticationForm）"""
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def __init__(self, *args, **kwargs):
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super(LoginForm, self).__init__(*args, **kwargs)
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# 自定义输入框样式
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self.fields['username'].widget = widgets.TextInput(
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attrs={'placeholder': "username", "class": "form-control"})
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self.fields['password'].widget = widgets.PasswordInput(
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attrs={'placeholder': "password", "class": "form-control"})
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# ------------------------- 注册表单 -------------------------
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class RegisterForm(UserCreationForm):
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"""用户注册表单（继承 Django 自带 UserCreationForm）"""
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def __init__(self, *args, **kwargs):
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super(RegisterForm, self).__init__(*args, **kwargs)
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# 为每个字段自定义前端样式与提示文本
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self.fields['username'].widget = widgets.TextInput(
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attrs={'placeholder': "username", "class": "form-control"})
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self.fields['email'].widget = widgets.EmailInput(
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attrs={'placeholder': "email", "class": "form-control"})
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self.fields['password1'].widget = widgets.PasswordInput(
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attrs={'placeholder': "password", "class": "form-control"})
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self.fields['password2'].widget = widgets.PasswordInput(
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attrs={'placeholder': "repeat password", "class": "form-control"})
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def clean_email(self):
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"""检查邮箱是否已被注册"""
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email = self.cleaned_data['email']
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if get_user_model().objects.filter(email=email).exists():
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raise ValidationError(_("email already exists")) # 抛出重复邮箱异常
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return email
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class Meta:
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"""指定绑定的模型和表单字段"""
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model = get_user_model()
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fields = ("username", "email")
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# ------------------------- 忘记密码表单 -------------------------
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class ForgetPasswordForm(forms.Form):
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"""用户通过邮箱重置密码的表单"""
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# 新密码输入
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new_password1 = forms.CharField(
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label=_("New password"),
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widget=forms.PasswordInput(
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attrs={
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"class": "form-control",
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'placeholder': _("New password")
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}
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),
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)
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# 新密码确认输入
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new_password2 = forms.CharField(
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label="确认密码",
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widget=forms.PasswordInput(
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attrs={
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"class": "form-control",
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'placeholder': _("Confirm password")
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}
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),
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)
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# 邮箱输入
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email = forms.EmailField(
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label='邮箱',
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widget=forms.TextInput(
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attrs={
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'class': 'form-control',
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'placeholder': _("Email")
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}
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),
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)
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# 验证码输入
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code = forms.CharField(
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label=_('Code'),
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widget=forms.TextInput(
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attrs={
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'class': 'form-control',
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'placeholder': _("Code")
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}
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),
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)
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# ----------- 字段验证逻辑 -----------
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def clean_new_password2(self):
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"""验证两次输入的新密码是否一致，并校验密码强度"""
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password1 = self.data.get("new_password1")
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password2 = self.data.get("new_password2")
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if password1 and password2 and password1 != password2:
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raise ValidationError(_("passwords do not match")) # 两次密码不一致
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password_validation.validate_password(password2) # 使用Django内置规则验证密码强度
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return password2
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def clean_email(self):
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"""验证邮箱是否存在于数据库"""
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user_email = self.cleaned_data.get("email")
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if not BlogUser.objects.filter(email=user_email).exists():
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# 这里可以根据项目安全策略决定是否提示“邮箱不存在”
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raise ValidationError(_("email does not exist"))
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return user_email
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def clean_code(self):
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"""验证邮箱验证码是否正确或过期"""
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code = self.cleaned_data.get("code")
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error = utils.verify(
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email=self.cleaned_data.get("email"),
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code=code,
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)
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if error: # utils.verify 返回错误信息时表示验证失败
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raise ValidationError(error)
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return code
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# ------------------------- 验证码邮箱发送表单 -------------------------
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class ForgetPasswordCodeForm(forms.Form):
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"""发送邮箱验证码表单，仅校验邮箱格式"""
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email = forms.EmailField(
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label=_('Email'),
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)
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