Ecto Changeset Date validation

[germain baptiste delpy]

The field :date must be >= date.now. What is the proper way to do that?
I don't see any validate_date function in the Ecto.Changeset documentation.
I like changeset, I want to stick on it, please help!
G.

[Andrew Timberlake]

It’s not too difficult to write your own validator,

defmodule MyModel do
#...

schema "mytable" do
field :date, Ecto.Date
end

def changeset(model, params \\ :invalid) do
model
|> cast(params, [:date])
|> validate_required([:date])
|> validate_current_or_future_date(:date)
end

def validate_current_or_future_date(%{changes: changes}=changeset, field) do
if date = changes[field] do
do_validate_current_or_future_date(changeset, field, date)
else
changeset
end
end

defp do_validate_current_or_future_date(changeset, field, date) do
today = Ecto.Date.utc
if Ecto.Date.compare(date, today) == :lt do
changeset
|> add_error(field, "Date in the past")
else
changeset
end
end
end

Hope that helps.

Andrew

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[germain baptiste delpy]

It's helpful ~
Tks, G.