Ecto Extensions
Useful Ecto extensions:
Sortable
Pageable
Searchable
Validators
Documentation: https://hexdocs.pm/ecto_extensions
Please note: this project is a work-in-progress. Breaking changes may occur.
Install
Add EctoExtensions to mix.exs
:
[{:ecto_extensions, "~> 0.0.2"}]
Example usage
Search, sort and paginate
Repo
module:
defmodule BlogApp.Repo do
# ...
use EctoExtensions # <- add this!
end
Schema
module:
defmodule BlogApp.Post do
use Ecto.Schema
use EctoExtensions.Sortable, fields: [:title, :published_at],
default: {:published_at, :desc}
use EctoExtensions.Searchable, fields: [:title, :content]
schema "posts" do
field :title
field :content
field :published_at, :utc_datetime
end
end
Context
module:
defmodule BlogApp.Posts do
@doc """
## Params
* :search - search query string
* :sort_by - field to sort by
* :sort_order - :asc or :desc
* :page - integer
* :page_size - integer
"""
def list_posts(params) do
Post
|> Repo.search(Post, params)
|> Repo.sort(Post, params)
|> Repo.paginate(params)
end
end
Controller
andView
:
defmodule BlogAppWeb.PostController do
def index(conn, params) do
page = Posts.list_posts(params)
render(conn, "index.json", %{page: page})
end
end
defmodule BlogAppWeb.PostView do
def render("index.json", %{page: page}) do
%{
page: page.page,
page_size: page.page_size,
total_pages: page.total_pages,
total_entries: page.total_entries,
posts: render_many(page.entries, PostView, "post.json")
}
end
def render("post.json", %{post: post}) do
# ...
end
end
Validators
Schema
module:
defmodule BlogApp.User do
use Ecto.Schema
import EctoExtensions.Validators # <- add this!
schema "users" do
field :email
end
def changeset(struct, params) do
struct
|> cast(params, [:email])
|> validate_email()
end
end
Contributing
- Fork it
mix deps.get
mix ecto.reset
- Make your changes
mix test
- Create a pull-request
License
EctoExtensions
is released under the MIT license. See LICENSE file for details.
About MLSDev
EctoExtensions
package is maintained by MLSDev, Inc. We specialize in providing all-in-one solution in mobile and web development. Our team follows Lean principles and works according to agile methodologies to deliver the best results reducing the budget for development and its timeline.
Find out more here and don't hesitate to contact us!