1196de6e88
Flask backend with Vue 3 frontend for shop floor machine management. Includes database schema export for MySQL shopdb_flask database. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
78 lines
2.0 KiB
Python
78 lines
2.0 KiB
Python
"""Machine relationship models."""
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from shopdb.extensions import db
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from .base import BaseModel
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class RelationshipType(BaseModel):
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"""Types of relationships between machines."""
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__tablename__ = 'relationshiptypes'
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relationshiptypeid = db.Column(db.Integer, primary_key=True)
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relationshiptype = db.Column(db.String(50), unique=True, nullable=False)
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description = db.Column(db.Text)
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# Example types:
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# - "Controls" (PC controls Equipment)
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# - "Dualpath" (Redundant path partner)
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# - "Backup" (Backup machine)
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def __repr__(self):
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return f"<RelationshipType {self.relationshiptype}>"
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class MachineRelationship(BaseModel):
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"""
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Relationships between machines.
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Examples:
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- PC controls CNC machine
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- Two CNCs are dualpath partners
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"""
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__tablename__ = 'machinerelationships'
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relationshipid = db.Column(db.Integer, primary_key=True)
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parentmachineid = db.Column(
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db.Integer,
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db.ForeignKey('machines.machineid'),
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nullable=False
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)
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childmachineid = db.Column(
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db.Integer,
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db.ForeignKey('machines.machineid'),
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nullable=False
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)
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relationshiptypeid = db.Column(
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db.Integer,
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db.ForeignKey('relationshiptypes.relationshiptypeid'),
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nullable=False
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)
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notes = db.Column(db.Text)
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# Relationships
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parent_machine = db.relationship(
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'Machine',
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foreign_keys=[parentmachineid],
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backref='child_relationships'
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)
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child_machine = db.relationship(
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'Machine',
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foreign_keys=[childmachineid],
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backref='parent_relationships'
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)
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relationship_type = db.relationship('RelationshipType', backref='relationships')
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__table_args__ = (
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db.UniqueConstraint(
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'parentmachineid',
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'childmachineid',
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'relationshiptypeid',
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name='uq_machine_relationship'
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),
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)
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def __repr__(self):
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return f"<MachineRelationship {self.parentmachineid} -> {self.childmachineid}>"
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