Support multiple levels of relations #91
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`buildFilter()` aliases relations that are not OneToOne, but `fullColumnName()` does not, the result being that filters on fields nested in HasMany or ManyToMany relations fail. This commit makes the `fullColumnName()` method alias all such relations.
There are 3 cases to consider rather than 2: 1. Is not a relation 2. Is a relation and !isOneToOne 3. Is a relation and isOneToOne
…ture/multi_level_relations
Objection Find is now supports multiple levels of depth. Subqueries replaced with joins during the process.
- GroupBy key column added as a default - GroupBy parameter is added only if there are joins
Update FindQueryBuilder.js
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This PR adds filter support for n levels of relations (e.g. person.neighbor.pet.name:eq "fido") to fix #17 and #79.
In order to do so, subqueries have been replaced with joins. The first step the FindQueryBuilder performs joins all related tables and adds aliases on each. Then, the filter queries are built using these aliases.
The PropertyRef class has been updated as well:
relationproperty is nowrelationsin order to hold multiple levels or relational fields.modelClassesproperty to hold the models represented by a query (using the example above: [Person, Person, Animal]).