Flask实战第51天：cms添加轮播图后端代码逻辑完成

首先，我们需要给轮播图设计一张表，因为轮播图前端要展示，CMS要管理，所以我们在apps下新建个models.py

编辑apps.models.py

from exts import db
from datetime import datetime


class BannerModel(db.Model):
    __tablename__ = 'banner'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    name = db.Column(db.String(255), nullable=False)
    image_url = db.Column(db.String(255), nullable=False)
    link_url = db.Column(db.String(255), nullable=False)
    priority = db.Column(db.Integer, default=0)
    create_time = db.Column(db.DateTime, default=datetime.now)

同步表到数据库

同步表前需要在manage.py中导入BannerModel，否则不会进行同步

python manage.py db migrate
python manage.py db upgrade

表单认证，编辑cms.forms.py

class AddBannerForm(BaseForm):
    name = StringField(validators=[InputRequired(message='请输入轮播图名称！')])
    image_url = StringField(validators=[InputRequired(message='请输入轮播图图片链接！')])
    link_url = StringField(validators=[InputRequired(message='请输入轮播图跳转链接！')])
    priority = IntegerField(validators=[InputRequired(message='请输入轮播图优先级！')])

视图，编辑cms.views.py

...
from .forms import AddBannerForm
from apps.models import BannerModel

@bp.route('/abanner/',methods=['POST'])
@login_required
def abanner():
    form = AddBannerForm(request.form)
    if form.validate():
        name = form.name.data
        image_url = form.image_url.data
        link_url = form.link_url.data
        priority = form.priority.data
        banner = BannerModel(name=name,image_url=image_url,link_url=link_url,priority=priority)
        db.session.add(banner)
        db.session.commit()
        return xjson.json_success()
    else:
        return xjson.json_param_error(message=form.get_error())