user20230119
Ecto get results of preload queries separately?
If I have a schema like: Posts has many Comments has many Users
Ecto will run three queries when preloading comments and users for a single post.
- Select Post
- Select all Comments with in Post
- Select all Users with in Comments
Ecto preload puts the Comments in the %Post{ comments: [ %Comment{} | ... ] }
Is there another Ecto command instead of preload that can get the list of unique comments and users for the Post without merging them into Post?
I want to send the front-end these and make connecting in the front-end.
- %Post{} with a list of comment ids.
- a list of %Comment{} each having a list of user ids
- a list of %User{} each with a list of comment ids
First Post!
thojanssens1
Ecto.assoc/3?
post = Repo.get Post, 1
comments= Repo.all Ecto.assoc(post, :comments)
Popular in Questions
Other popular topics
Latest on Elixir Forum
Sponsor Spotlight
Enabling companies to succeed by building software people love.
Categories:
Sub Categories:
Forums
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Real-time error tracking, performance insights, and observability for devs.
Practical resources that improve the lives of professional developers.
Develop your skills with books, videos, and courses.
Producing high quality Elixir screencasts since 2017.
Courses that'll move you from confusion to "Aha, now I get it!"