eqon133
Ecto validate existing record
Hi,
how to validate existing records against changeset validations? Looking for best solution.
Imagine changing validation conditions and now i need to validate existing record in database using same validation rules. Ecto seems to run validations only on changes.
eg database has %User{name: "Joe"}
new validate length value name min: 5
def changeset(user, attrs) do
..
|> validate_length(:name, min: 5, max: 100)
end
User.changeset(user, %{}) says its valid
User.changeset(user, %{name: "Joe"}) says its valid
Marked As Solved
stefanchrobot
Yes, Ecto changesets are primarily concerned about changes and the repo will apply partial updates.
So if you want to re-validate data, I think you’ll need to do it manually with something like:
attrs = Map.from_struct(user)
user
|> cast(attrs, [...])
|> validate_length(:name, min: 5, max: 100)
...
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