Phoenix·Phoenix essentials

Ecto

Ecto schemas map tables and changesets validate writes.

Advanced 10 min read Lesson 3 of 150 Challenge included

What you will be able to do

Define schema.
Use Repo for queries.
Validate with changesets.

In plain English

Ecto schemas map tables and changesets validate writes.

Define schema.
Use Repo for queries.
Validate with changesets.

course.exELIXIR

schema "courses" do
  field :title, :string
  field :minutes, :integer
end

def changeset(course, attrs) do
  course |> cast(attrs, [:title, :minutes]) |> validate_required([:title])
end

Your turn

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Easy

Answer from memory: What validates writes in Ecto?

TEXT · starter

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Knowledge checkQuestion 1

What validates writes in Ecto?

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