查询未在 flask 中按预期返回数据

Question

我有以下代码行尝试从一对多关系返回子值。 条目在数据库中得到确认，具有外键关系

def SiteQuery():
    query = Site.query.join(SiteLocation, Site.id==SiteLocation.site_id).all()
    data = []
    for site in query:
        site_object = {
            'id': site.id,
            'name':site.name,
            'site_location': []
        }
        for site_location in site.site_location:
            site_location = {
                'id':site_location.id,
                'name': site_location.name
            }
            site_object['site_location'].append(site_location)
        data.append(site_object)
    return data

在另一个文件中，我有以下内容

class Site(db.Model):

    # Primary Model
    __tablename__ = 'site'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(200), index=False, unique=False, nullable=False)
    
    # # Site locations Relationship
    site_location = db.relationship('SiteLocation', backref='site', lazy=True)
    def __repr__(self):
        return '<Venue Name: {}>'.format(self.venue_name)
    
class SiteLocation(db.Model):

    #Primary Model
    __tablename__='sitelocation'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(200), index=False, unique=False, nullable=False)

    #RELATIONSHIPS
    site_id = db.Column(db.Integer, db.ForeignKey('site.id'), nullable=False)

我的路线很好地调用了这一切，我从 jinja 模板中得到了 output。

@site.route('/site')
def index():
    # return SiteQuery()
    return render_template('site.jinja2', data=SiteQuery())

我的神社看起来像这样：

{%for site in data%}
    Site Name: {{site.name}}<br><br>
    {% for sitelocation in site%}
        location name: {{sitelocation.name}}<br>
    {%endfor%}
    <br>
{% endfor %}

我的浏览器中的 output 是这样的：

Site Name: the well

location name:
location name:
location name:

Site Name: three dollar bill

location name:
location name:
location name:

换句话说，子记录没有正确填充。 有什么建议么？