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PATCH: Fix for when a through table has multiple associations #1618

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PATCH: Fix for when a through table has multiple associations #1618

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15 changes: 10 additions & 5 deletions lib/waterline/methods/add-to-collection.js
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Original file line number Diff line number Diff line change
Expand Up @@ -349,11 +349,16 @@ module.exports = function addToCollection(/* targetRecordIds, collectionAttrName
// through table mapping that was generated by Waterline-Schema.
else if (_.has(Object.getPrototypeOf(WLChild), 'throughTable')) {
childReference = WLChild.throughTable[WLModel.identity + '.' + query.collectionAttrName];
_.each(WLChild.throughTable, function(rhs, key) {
if (key !== WLModel.identity + '.' + query.collectionAttrName) {
parentReference = rhs;
}
});

parentReference = WLModel.identity;

// this code assumed that there would be only 2 associations on the through table
// but in some projects there are multiple
// _.each(WLChild.throughTable, function(rhs, key) {
// if (key !== WLModel.identity + '.' + query.collectionAttrName) {
// parentReference = rhs;
// }
// });
}

// Find the child reference in a junction table
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15 changes: 10 additions & 5 deletions lib/waterline/methods/replace-collection.js
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Original file line number Diff line number Diff line change
Expand Up @@ -358,11 +358,16 @@ module.exports = function replaceCollection(/* targetRecordIds?, collectionAttrN
// through table mapping that was generated by Waterline-Schema.
else if (_.has(Object.getPrototypeOf(WLChild), 'throughTable')) {
childReference = WLChild.throughTable[WLModel.identity + '.' + query.collectionAttrName];
_.each(WLChild.throughTable, function(rhs, key) {
if (key !== WLModel.identity + '.' + query.collectionAttrName) {
parentReference = rhs;
}
});

// should be safe to assume that the parentReference is indeed the main model here
parentReference = WLModel.identity;

// this code assumed that there would be only 2 associations on the through table (as stated above)
// _.each(WLChild.throughTable, function(rhs, key) {
// if (key !== WLModel.identity + '.' + query.collectionAttrName) {
// parentReference = rhs;
// }
// });
}//>-


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