Python 烧瓶-烧瓶管理-一对多-级联
我目前正在用Flask启动一个项目。我目前正在经历一次烧瓶管理 我尝试建立一个两级关系。对于每一个“候选人”,我喜欢将一种语言与该语言的级别(LanguageLevel)联系起来 这是我的模特Python 烧瓶-烧瓶管理-一对多-级联,python,flask,flask-sqlalchemy,flask-wtforms,flask-admin,Python,Flask,Flask Sqlalchemy,Flask Wtforms,Flask Admin,我目前正在用Flask启动一个项目。我目前正在经历一次烧瓶管理 我尝试建立一个两级关系。对于每一个“候选人”,我喜欢将一种语言与该语言的级别(LanguageLevel)联系起来 这是我的模特 from app import db class Candidat(db.Model): id = db.Column(db.Integer, primary_key=True) firstname = db.Column(db.String(128)) lastname = d
from app import db
class Candidat(db.Model):
id = db.Column(db.Integer, primary_key=True)
firstname = db.Column(db.String(128))
lastname = db.Column(db.String(128))
birthdate = db.Column(db.DateTime)
languages = db.relationship("CandidatLanguage", backref="candidat")
def __repr__(self):
return '<Nom %r>' % self.lastname
class Language(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128))
def __repr__(self):
return '<Langues %r>' % self.name
class Languagelevel(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128))
def __repr__(self):
return '<Niveau : %r>' % self.name
class CandidatLanguage(db.Model):
id = db.Column(db.Integer, primary_key=True)
candidat_id = db.Column(db.Integer, db.ForeignKey('candidat.id'))
language_id = db.Column(db.Integer, db.ForeignKey('language.id'))
langguage_level_id = db.Column(db.Integer, db.ForeignKey('languagelevel.id'))
我想要的是一份如下所示的候选表格:
class Candidat(db.Model):
id = db.Column(db.Integer, primary_key=True)
firstname = db.Column(db.String(128))
lastname = db.Column(db.String(128))
birthdate = db.Column(db.Date)
categories = db.relationship('Category', secondary=category_candidat,
backref=db.backref('candidat', lazy='dynamic'))
def __repr__(self):
return '<Nom %r>' % self.lastname
class Language(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128))
def __repr__(self):
return '%s' % unicode(self.name)
class Languagelevel(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128))
def __repr__(self):
return '%s' % self.name
class CandidatLanguage(db.Model):
id = db.Column(db.Integer, primary_key=True)
candidat_id = db.Column(db.Integer, db.ForeignKey('candidat.id'))
language_id = db.Column(db.Integer, db.ForeignKey('language.id'))
language_level_id = db.Column(db.Integer, db.ForeignKey('languagelevel.id'))
language = db.relationship(Language, backref="Candidat")
candidat = db.relationship(Candidat, backref="Langue")
languagelevel = db.relationship(Languagelevel, backref="Candidat")
名字:\uuuuuuuuuuu
姓氏:\uuuuuuuuuuuuuu
语言:
- 语言下拉列表:
- 语言1
- 语言2
- LanguageLevel的下拉列表:
- 一级
- 二级
列自动选择相关的
,列显示所有关系
,当然没有一个像我想的那样工作。当然这是我的错误
如果有人能告诉我实现目标的正确方法,那将非常有帮助
提前谢谢
关于最后,我在 我的错误是:
- 将
(CandidateLanguage)放入我的db.relationship
班级。相反,我将关系放在“透视”表中 (候选语言)Candidate
- 正如IfLoop在帖子中所说,我必须“从一个普通的 与“关联对象”的多对多关系。我不“ 理解为什么,但它使用关联对象工作
class Candidat(db.Model):
id = db.Column(db.Integer, primary_key=True)
firstname = db.Column(db.String(128))
lastname = db.Column(db.String(128))
birthdate = db.Column(db.Date)
categories = db.relationship('Category', secondary=category_candidat,
backref=db.backref('candidat', lazy='dynamic'))
def __repr__(self):
return '<Nom %r>' % self.lastname
class Language(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128))
def __repr__(self):
return '%s' % unicode(self.name)
class Languagelevel(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128))
def __repr__(self):
return '%s' % self.name
class CandidatLanguage(db.Model):
id = db.Column(db.Integer, primary_key=True)
candidat_id = db.Column(db.Integer, db.ForeignKey('candidat.id'))
language_id = db.Column(db.Integer, db.ForeignKey('language.id'))
language_level_id = db.Column(db.Integer, db.ForeignKey('languagelevel.id'))
language = db.relationship(Language, backref="Candidat")
candidat = db.relationship(Candidat, backref="Langue")
languagelevel = db.relationship(Languagelevel, backref="Candidat")
这样,一切都很好,我有了一个我想要的内联表单
我不是什么都懂,但它很管用。如果有人能解释,那就太好了
问候
from flask.ext.admin import Admin, BaseView, expose
class MyView(BaseView):
@expose('/')
def index(self):
return self.render('adm-index.html')
admin = Admin(app)
admin.add_view(MyView(name='Hello'))
from flask.ext.admin.contrib.sqla import ModelView
class CandidatView(ModelView):
column_auto_select_related = True
inline_models = (CandidatLanguage,)
admin.add_view(CandidatView(Candidat, db.session))
admin.add_view(ModelView(Language, db.session))
admin.add_view(ModelView(Languagelevel, db.session))