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wtform 表单示例

时间:2018-05-01 20:32:36      阅读:171      评论:0      收藏:0      [点我收藏+]

标签:定义   err   data   通配符   import   htm   span   正则   int   

用户注册

from flask import Flask, render_template, request, redirect
from wtforms import Form
from wtforms.fields import core
from wtforms.fields import html5
from wtforms.fields import simple
from wtforms import validators
from wtforms import widgets

app = Flask(__name__, template_folder=templates)
app.debug = True



class RegisterForm(Form):
    name = simple.StringField(
        label=用户名,
        validators=[
            validators.DataRequired(),
             validators.Regexp(regex="[a-zA-Z]",
                              message=密码至少8个字符,至少1个大写字母,1个小写字母,1个数字和1个特殊字符)
#  正则中不要使用\w,\d等通配符。要用[a-zA-z0-9]
        ],
        widget=widgets.TextInput(),
        render_kw={class: form-control},
        default=alex
    )

    pwd = simple.PasswordField(
        label=密码,
        validators=[
            validators.DataRequired(message=密码不能为空.)
        ],
        widget=widgets.PasswordInput(),
        render_kw={class: form-control}
    )

    pwd_confirm = simple.PasswordField(
        label=重复密码,
        validators=[
            validators.DataRequired(message=重复密码不能为空.),
            validators.EqualTo(pwd, message="两次密码输入不一致")
        ],
        widget=widgets.PasswordInput(),
        render_kw={class: form-control}
    )

    email = html5.EmailField(
        label=邮箱,
        validators=[
            validators.DataRequired(message=邮箱不能为空.),
            validators.Email(message=邮箱格式错误)
        ],
        widget=widgets.TextInput(input_type=email),
        render_kw={class: form-control}
    )

    gender = core.RadioField(
        label=性别,
        choices=(
            (1, ),
            (2, ),
        ),
        coerce=int
    )
    city = core.SelectField(
        label=城市,
        choices=(
            (bj, 北京),
            (sh, 上海),
        )
    )

    hobby = core.SelectMultipleField(
        label=爱好,
        choices=(
            (1, 篮球),
            (2, 足球),
        ),
        coerce=int
    )

    favor = core.SelectMultipleField(
        label=喜好,
        choices=(
            (1, 篮球),
            (2, 足球),
        ),
        widget=widgets.ListWidget(prefix_label=False),
        option_widget=widgets.CheckboxInput(),
        coerce=int,
        default=[1, 2]
    )

    def __init__(self, *args, **kwargs):
        super(RegisterForm, self).__init__(*args, **kwargs)
        self.favor.choices = 从数据库再次查询def validate_pwd_confirm(self, field):
        """
        自定义pwd_confirm字段规则,例:与pwd字段是否一致
        :param field: 
        :return: 
        """
        # 最开始初始化时,self.data中已经有所有的值

        if field.data != self.data[pwd]:
            # raise validators.ValidationError("密码不一致") # 继续后续验证
            raise validators.StopValidation("密码不一致")  # 不再继续后续验证


@app.route(/register, methods=[GET, POST])
def register():
    if request.method == GET:
        form = RegisterForm(data={gender: 1})
        return render_template(register.html, form=form)
    else:
        form = RegisterForm(formdata=request.form)
        if form.validate():
            print(用户提交数据通过格式验证,提交的值为:, form.data)
        else:
            print(form.errors)
        return render_template(register.html, form=form)



if __name__ == __main__:
    app.run()

app.py            

渲染页面的两种方式

方式一:

 <p>{{form.name.label}} {{form.name}} {{form.name.errors[0] }}</p>

    <!--<input type="password" name="pwd">-->
    <p>{{form.pwd.label}} {{form.pwd}} {{form.pwd.errors[0] }}</p>


方式二:
  {% for item in form %}
    <p>{{item.label}}: {{item}} {{item.errors[0] }}</p>
    {% endfor %}

 

wtform 表单示例

标签:定义   err   data   通配符   import   htm   span   正则   int   

原文地址:https://www.cnblogs.com/zjchao/p/8976785.html

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