grangerelixx
Cast_embed followed by unique_constraint doesn't detect uniqueness errors
Hi, I have an ecto schema whose changeset function is in the following structure
def changeset(post, attrs) do
post
|> cast(attrs, @fields)
|> cast_embed(:blog)
|> unique_constraint([:name])
|> validate_required(@fields)
end
When there is a duplicate name and also some error in blog cast_embed, it should return errors from cast_embed and unique_constraint error but it only returns cast_embed error. How to get all errors?
Most Liked
trisolaran
As @joey_the_snake mentioned, unique_constraint/3 only adds the error if your changest hits the database. You can however add an unsafe_validate_unique/4 to optimistically check for duplicate entries before insertion and add an error to the changeset if a duplicate is found. This is useful to show the user early on that the operation can’t succeed (and will probably catch most of the cases, the rest will be caught by unique_constraint/3)
Popular in Questions
Other popular topics
Latest on Elixir Forum
Sponsor Spotlight
Courses that'll move you from confusion to "Aha, now I get it!"
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.
Practical resources that improve the lives of professional developers.
Develop your skills with books, videos, and courses.
Enabling companies to succeed by building software people love.
Courses that'll move you from confusion to "Aha, now I get it!"