Open
Description
Package version
21.6.0
Describe the bug
When attempting to preload a hasManyThrough relation and the local key
(e.g. city_area_id) is null, Lucid throws an error instead of returning an empty relation or null.
Error Example
Exception: Cannot preload "city", value of "Vendor.city_area_id" is undefined
Expected Behavior
Lucid should handle null local keys gracefully and not throw errors when preloading relations. It should either:
- Return
nullor[]based on the relation type.
Temporary Workaround
if (vendor.city_area_id) {
await vendor.load('city')
} else {
vendor.$setRelated('city', [])
}Stack trace snippet
at ensureValue (...) {
const value = collection[key];
if (value === undefined || value === null) {
missingCallback();
return;
}
}Detailed trace
[05:17:27.396] ERROR (180839): Cannot preload "city", value of "Vendor.city_area_id" is undefined
request_id: "m262nao1gmabmkx9otzulswv"
x-request-id: "m262nao1gmabmkx9otzulswv"
err: {
"type": "Exception",
"message": "Cannot preload \"city\", value of \"Vendor.city_area_id\" is undefined",
"stack":
Exception: Cannot preload "city", value of "Vendor.city_area_id" is undefined
at file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/utils/index.js:83:15
at ensureValue (file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/utils/index.js:31:9)
at getValue (file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/utils/index.js:82:12)
at HasManyThroughQueryBuilder.addWhereConstraints (file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/orm/relations/has_many_through/query_builder.js:66:23)
at HasManyThroughQueryBuilder.applyConstraints (file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/orm/relations/has_many_through/query_builder.js:139:14)
at HasManyThroughQueryBuilder.exec (file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/orm/relations/base/query_builder.js:146:14)
at Preloader.processRelation (file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/orm/preloader/index.js:41:57)
at file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/orm/preloader/index.js:137:25
at Array.map (<anonymous>)
at Preloader.processAllForOne (file:///media/elattar/myData/html/wadjet/backend-adonis/node_modules/@adonisjs/lucid/build/src/orm/preloader/index.js:136:54)
"name": "Exception",
"status": 500
}
Reproduction repo
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