質問編集履歴
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修正
test
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test
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@@ -33,115 +33,3 @@
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parent_id = child.parent.id #<--- リレーションされているparentデータ取得失敗
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```
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全コード
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```python
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from flask import Flask
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from flask_sqlalchemy import SQLAlchemy
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app = Flask(__name__)
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app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///test.db'
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db = SQLAlchemy(app)
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def func():
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# 親データ追加
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parent = Parent('Test A', 'pass')
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db.session.add(parent)
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db.session.commit()
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# 子データの追加
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child = Child('ユーザー', 'パスワード', parent.id)
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db.session.bulk_save_objects([child], return_defaults=True)
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# 普通にaddするとうまくいく
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# db.session.add(child)
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db.session.commit()
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parent_id = child.parent.id
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class Parent(db.Model):
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__tablename__ = 'parent'
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id = db.Column(db.Integer, primary_key=True)
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username = db.Column(db.String(80))
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password = db.Column(db.String(80))
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child = db.relationship("Child", cascade="all, delete")
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def __init__(self, username, password):
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self.username = username
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self.password = password
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class Child(db.Model):
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__tablename__ = 'child'
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id = db.Column(db.Integer, primary_key=True)
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child_name = db.Column(db.String(80))
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password = db.Column(db.String(80))
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parent_id = db.Column(db.Integer, db.ForeignKey('parent.id'))
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parent = db.relationship("Parent")
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def __init__(self, username, password, parent_id):
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self.parent_name = username
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self.password = password
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self.parent_id = parent_id
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app.debug = True
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db.create_all()
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func()
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```
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