How to change field type in Ecto?

Question

I have a schema:

schema "editables" do     field :title, :string     field :content, :string      timestamps   end 

Now I want to change the type of one field form :integer to :binary. What's the correct way of writing the migration because using add is not working...?

def change do     alter table(:editables) do       add :title, :binary       add :content, :binary        timestamps     end   end 

Answer 1

You have to use modify/3 to change the type. add/3 is only for adding new columns.

alter table(:editables) do   modify :content, :binary end