refs https://github.com/TryGhost/Ghost/issues/12420
- updated `order` bookshelf plugin's `parseOrderOption()` method to return multiple order-related properties
- `order` same as before, a key-value object of property-direction
- `orderRaw` new property that is a raw SQL order string generated from `orderRawQuery()` method in models
- `eagerLoad` new property that is an array of properties the `eagerLoad` plugin should use to join across
- updated `pagination.fetchAll()` to apply normal order + raw order if both are available and to handle eager loading / joins when `options.eagerLoad` is populated
- updated post model to include details for email relationship and to add `orderRawQuery()` that allows `email.open_rate` to be used as an order option
closes#12263
- Express parses repeated query parameters as an array (req.query properties). Because there is no clear reason on why not to support this behavior extended order parameter parsing logic to handle arrays. This follows the rule of "liberal inputs, conservative outputs"
- Example supported query string for ordering can now look like: `?order=featured&order=published_at asc`, the priority of the order stays the same with the most significant appearing first and least significant last
refs #11729
- When ordering is done by fields from a relation (like post's `meta_title` that comes form `posts_meta` table), Bookshelf does not include those relations in the original query which caused errors. To support this usecase added a mechanism to detect fields from a relation and load those relations into query.
- Extended ordering to include table name in ordered field name. The information about the table name is needed to avoid using `tableName` within pagination plugin and gives path to having other than original table ordering fields (e.g. order by posts_meta table fields)
- Added test case to check ordering on posts_meta fields
- Added support for "eager loading" relations. Allows to extend query builder object with joins to related tables,
which could be used in ordering (possibly in filtering later). Bookshelf does not support ordering/filtering by proprieties coming from relations, that's why this kind of plugin and query expansion is needed
- Added note about lack of support for child relations with same property names.
refs #11729
- Having a plugin allows to reason about ordering better and gives way
to further extraction away form the core.
- Just like with filtering, ordering falls into similar category of having effect on knex'es query builder object extension through additional statements - ORDER BY in this case.
- Because there were bugs associated with use of permittedAttributes inside of `parseOrderOption` method, introduced separate `orderAttributes` function which returns only those fields which are orderable (https://github.com/TryGhost/Ghost/issues/11729#issuecomment-685740836)
