closes https://github.com/TryGhost/Ghost/issues/12791
closes https://github.com/TryGhost/Team/issues/566https://github.com/TryGhost/Ghost/pull/12787 introduced a significant performance regression due to a misunderstanding of when Bookshelf calls `.format()` ([related upstream issue](https://github.com/bookshelf/bookshelf/issues/668)). We expected `.format()` to only be called on save but it's also called when Bookshelf performs fetching and eager loading which happens frequently. `.format()` can be a heavy method as it needs to parse and serialize html and markdown so it should be performed as infrequently as possible.
- override `sync()` in the base model so we can call our own `.formatOnWrite()` method to transform attributes on `update` and `insert` operations
- this was the only feasible location in Bookshelf I could find that is low enough level to not require modifying model instance attributes
- gives models the option to perform heavy transform operations only when writing to the database compared to the usual `.format()` method that is also called on fetch in many situations
closes https://github.com/TryGhost/Team/issues/552
Refactors URL transforms so they take place at the model layer rather than the API serializer layer. Continuation of the pattern created for the settings model in https://github.com/TryGhost/Ghost/pull/12738
- Added checks to all front-end tests to ensure output does not contain the magic replacement string
- includes failing acceptance test for `__GHOST_URL__` appearing in sitemaps
- Removed all transform-ready URL transforms from API serializers
- input serializers transform image urls relative->absolute to keep absolute-urls as the consistent "outside of the database" format
- output serializers should not need to perform any URL transforms as that will be done at the model layer
- Added url transforms to models layer
- removes knowledge from the API serializers which shouldn't need to know how data is stored internally in the database
- makes absolute urls the consistent "outside of the database" URL format
- adds transform step to the sitemap generator because the data used for that is fetched directly via knex which will not run through the bookshelf `parse()` methods
closes https://github.com/TryGhost/Team/issues/467
- switches to storing "transform-ready" URLs in the database
- transform-ready URLs contain a `__GHOST_URL__` placeholder that corresponds to the configured url that gives a few benefits
- much faster and less memory intensive output transformations through not needing to parse html or markdown - the transform can be achieved using a straightforward regex find+replace
- ability to change to/from or rename subdirectory without any manual updates to the database
- modified existing 4.0 url-transformation migration rather than adding another one and repeating the transformation on posts rows
no issue
- `og_image` and `twitter_image` fields are now located in a separate model so the transform functionality for those fields needed to move accordingly
NOTE: The post metadata table split is purely an internal optimization for v3 and doesn't require or expect any external actions including related API usage in v3
We keep running into issues adding new fields to the post table because there are too many fields making the post table "too wide". We have also hit MySQL limitations in how many bytes can be in a row (64kb) with post table.
In v3, we decided to split the 8 post fields (meta, twitter and og) used for meta data into a posts_meta table as these 8 fields are all "problem" `varchar` fields and make sense logically grouped together. The API layer is unaffected by the split as input/output serializers ensure the data flow works the same way as it was in v2. Only thing to note is json export in v3 will have slightly different structure with posts meta fields as separate.
- Creates new post_meta schema/table with 8 fields (2 meta_* , 3 twitter_* and 3 og_*)
- Update relations between post and post_meta table
- Update input/output serializers to keep existing API behavior
- Avoids new entry in post_meta table for post where all meta fields are null
- Keeps the current fields API param behavior
- Handles migration of existing posts to new table structure
- Updates importer/exporter to work seamlessly with table changes
