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Allow primary key to be specified for relationship #333

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Allow primary key to be specified for relationship #333

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0ed331a
Fixes #142
Aug 23, 2022
175b7d3
Merge pull request #1 from loren/fk_on_through_tables
loren Aug 24, 2022
e6b842c
Allow primary key to be specified for relationship
Aug 24, 2022
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1 change: 1 addition & 0 deletions pgsync/constants.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@
"through_tables",
"type",
"variant",
"primary_key",
]

# Relationship foreign keys
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7 changes: 3 additions & 4 deletions pgsync/node.py
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,7 @@ def __post_init__(self):
self.through_tables: List[str] = self.relationship.get(
"through_tables", []
)
self.primary_key: List[str] = self.relationship.get("primary_key", [])
self.through_nodes: List[Node] = []

if not set(self.relationship.keys()).issubset(
Expand Down Expand Up @@ -97,7 +98,7 @@ def __post_init__(self):

def __str__(self):
return (
f"relationship: {self.variant}.{self.type}:{self.through_tables}"
f"relationship: {self.variant}.{self.type}:{self.through_tables}.{self.primary_key}"
)


Expand Down Expand Up @@ -149,7 +150,7 @@ def __post_init__(self):
table=through_table,
schema=self.schema,
parent=self,
primary_key=[],
primary_key=self.relationship.primary_key,
)
)

Expand Down Expand Up @@ -288,8 +289,6 @@ def build(self, data: dict) -> Node:
)

self.tables.add(node.table)
for through_node in node.relationship.through_nodes:
self.tables.add(through_node.table)

for child in data.get("children", []):
node.add_child(self.build(child))
Expand Down