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Deduce cardinality from fields (#557)

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1ilit
2025-08-23 13:44:08 +04:00
committed by GitHub
parent d99f77d0de
commit 3eac4c342a
1 changed files with 26 additions and 7 deletions
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33
src/components/EditorCanvas/Canvas.jsx
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@@ -549,6 +549,25 @@ export default function Canvas() {
setLinking(true);
};
const getCardinality = (startField, endField) => {
const startIsUnique = startField.unique || startField.primary;
const endIsUnique = endField.unique || endField.primary;
if (startIsUnique && endIsUnique) {
return Cardinality.ONE_TO_ONE;
}
if (startIsUnique && !endIsUnique) {
return Cardinality.ONE_TO_MANY;
}
if (!startIsUnique && endIsUnique) {
return Cardinality.MANY_TO_ONE;
}
return Cardinality.ONE_TO_ONE;
};
const handleLinking = () => {
if (hoveredTable.tableId === null) return;
if (hoveredTable.fieldId === null) return;
@@ -556,17 +575,15 @@ export default function Canvas() {
const { fields: startTableFields, name: startTableName } = tables.find(
(t) => t.id === linkingLine.startTableId,
);
const { type: startType, name: startFieldName } = startTableFields.find(
const startField = startTableFields.find(
(f) => f.id === linkingLine.startFieldId,
);
const { fields: endTableFields, name: endTableName } = tables.find(
(t) => t.id === hoveredTable.tableId,
);
const { type: endType } = endTableFields.find(
(f) => f.id === hoveredTable.fieldId,
);
const endField = endTableFields.find((f) => f.id === hoveredTable.fieldId);
if (!areFieldsCompatible(database, startType, endType)) {
if (!areFieldsCompatible(database, startField.type, endField.type)) {
Toast.info(t("cannot_connect"));
return;
}
@@ -576,14 +593,16 @@ export default function Canvas() {
)
return;
const cardinality = getCardinality(startField, endField);
const newRelationship = {
...linkingLine,
cardinality,
endTableId: hoveredTable.tableId,
endFieldId: hoveredTable.fieldId,
cardinality: Cardinality.ONE_TO_ONE,
updateConstraint: Constraint.NONE,
deleteConstraint: Constraint.NONE,
name: `fk_${startTableName}_${startFieldName}_${endTableName}`,
name: `fk_${startTableName}_${startField.name}_${endTableName}`,
id: relationships.length,
};
delete newRelationship.startX;