BaseModel provides a simple set of CRUD functions to an Ecto Model via a __using__ macro. For Example:

defmodule Db.Models.Person do
  use BaseModel, repo: Db.Repo

  schema "persons" do
    field :name, :string
    field :age, :integer
  end
end

The use BaseModel line adds the following methods to the Person Model:

• Person.create(params)
• Person.all(opts \\ [order_by: :none, preload: []])
• Person.find(id, opts \\ [preload: []])
• Person.first(where, opts \\ [preload: []])
• Person.first(where_clause, opts \\ [order_by: :none, preload []])
• Person.first_or_create(where_clause, opts \\ [order_by: :none, preload []])
• Person.where(where_clause, opts \\ [order_by: :none, limit: :none, preload: []])
• Person.count(where_clause \\ [])
• Person.delete(id_or_struct)
• Person.delete_all()
• Person.delete_where(where_clause)
• Person.update(model, params)
• Person.update_where(where_clause, params)

This model can now be interacted with in a more fluent manner than raw ecto:

iex> {:ok, model} = Person.create(name: "chris", age: 99)
{:ok, %Person{name: "chris", age: 99}}
iex> Person.update(model, age: 18)
{:ok, %Person{name: "chris", age: 18}}
iex> Person.where(age: 18)
[%Person{name: "chris", age: 18}]