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Monthly Downloads: 906
Programming language: Elixir
License: Apache License 2.0
Latest version: v0.2.0

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README

Mongo.Ecto

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Mongo.Ecto is a MongoDB adapter for Ecto.

For detailed information read the documentation for the Mongo.Ecto module, or check out examples below.

Features still missing to be Ecto 2.1 compliant

  • on_conflict

Example

# In your config/config.exs file
config :my_app, Repo,
  adapter: Mongo.Ecto,
  database: "ecto_simple",
  username: "mongodb",
  password: "mongosb",
  hostname: "localhost"

# In your application code
defmodule Repo do
  use Ecto.Repo, otp_app: :my_app
end

defmodule Weather do
  use Ecto.Model

  @primary_key {:id, :binary_id, autogenerate: true}
  schema "weather" do
    field :city     # Defaults to type :string
    field :temp_lo, :integer
    field :temp_hi, :integer
    field :prcp,    :float, default: 0.0
  end
end

defmodule Simple do
  import Ecto.Query

  def sample_query do
    query = from w in Weather,
          where: w.prcp > 0 or is_nil(w.prcp),
         select: w
    Repo.all(query)
  end
end

Usage

Add Mongo.Ecto as a dependency in your mix.exs file.

def deps do
  [{:mongodb_ecto, "~> 0.1"}]
end

You should also update your applications to include both projects.

def application do
  [applications: [:logger, :mongodb_ecto, :ecto]]
end

To use the adapter in your repo:

defmodule MyApp.Repo do
  use Ecto.Repo,
    otp_app: :my_app,
    adapter: Mongo.Ecto
end

For additional information on usage please see the documentation for Ecto.

Data Type Mapping

BSON Ecto
double :float
string  :string
object :map
array {:array, subtype}
binary data :binary
binary data (uuid) Ecto.UUID
object id :binary_id
boolean :boolean
date Ecto.DateTime
regular expression Mongo.Ecto.Regex
JavaScript Mongo.Ecto.JavaScript
symbol (see below)
32-bit integer :integer
timestamp BSON.Timestamp
64-bit integer :integer

Symbols are deprecated by the BSON specification. They will be converted to simple strings on reads. There is no possibility of persisting them to the database.

Additionally special values are translated as follows:

BSON Ecto
null nil
min key :BSON_min
max key :BSON_max

Supported Mongo versions

The adapter and the driver are tested against most recent versions from 3 branches: 2.4.x, 2.6.x, 3.0.x

Contributing

To contribute you need to compile Mongo.Ecto from source and test it:

$ git clone https://github.com/ankhers/mongodb_ecto.git
$ cd mongodb_ecto
$ mix test

License

Copyright 2015 Michał Muskała

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.


*Note that all licence references and agreements mentioned in the mongodb_ecto README section above are relevant to that project's source code only.