Ghost/core/server/models/snippet.js
Kevin Ansfield 426cbeec0f
🐛 Fixed performance regression introduced in 4.1.0 (#12807)
closes https://github.com/TryGhost/Ghost/issues/12791
closes https://github.com/TryGhost/Team/issues/566

https://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
2021-03-23 09:11:24 +00:00

34 lines
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JavaScript

const ghostBookshelf = require('./base');
const urlUtils = require('../../shared/url-utils');
const Snippet = ghostBookshelf.Model.extend({
tableName: 'snippets',
formatOnWrite(attrs) {
if (attrs.mobiledoc) {
attrs.mobiledoc = urlUtils.mobiledocToTransformReady(attrs.mobiledoc);
}
return attrs;
},
parse() {
const attrs = ghostBookshelf.Model.prototype.parse.apply(this, arguments);
if (attrs.mobiledoc) {
attrs.mobiledoc = urlUtils.transformReadyToAbsolute(attrs.mobiledoc);
}
return attrs;
}
});
const Snippets = ghostBookshelf.Collection.extend({
model: Snippet
});
module.exports = {
Snippet: ghostBookshelf.model('Snippet', Snippet),
Snippets: ghostBookshelf.collection('Snippets', Snippets)
};