By default, sails will populate all relationships within a model when it's corresponding API route is hit. Does anyone know if it's possible to toggle this functionality? If I'm working with a one-to-many association, I may not want to populate the association when doing a listing of all items for performance reasons. But when viewing a single item, it would be nice to complete the population.
For example, say one ticket can have many comments. I don't care about the comments when fetching a case listing but would be important when viewing a specific case. I took a guess at how it could function but it fails:
localhost:1337/tickets?populate=false
Update
I implemented the above functionality within balderdashy/sails#1695. The only change is that you selectively choose which associations to populate using:
localhost:1337/tickets?populate=[] // Don't populate anything
localhost:1337/tickets?populate=[comments] // Only populate comments
This would override whatever is defined for populate within your blueprint config.
You just need to separate your assosiactions via comma, just like this:
localhost:1337/tickets?populate=comments,owner&SOME_OTHER_PARAMS
来源：https://stackoverflow.com/questions/23643870/how-to-selectively-populate-waterline-associations-via-query-param-in-sails-js