Connect: Add Elixir

Author: amotl

docs/connect/elixir/index.md

@@ -0,0 +1,90 @@
+(connect-elixir)=
+
+# Elixir
+
+:::{div} sd-text-muted
+Connect to CrateDB from Elixir applications.
+:::
+
+:::{rubric} About
+:::
+
+[Postgrex] is the canonical PostgreSQL driver for Elixir.
+
+:::{rubric} Synopsis
+:::
+
+`mix.exs`
+```elixir
+defmodule CrateDbExample do
+  use Mix.Project
+  def project do
+    [
+      app: :cratedb_elixir_example,
+      version: "0.0.0",
+      deps: [{:postgrex, "~> 0.21.0"}],
+    ]
+  end
+end
+```
+`example.exs`
+```elixir
+options = [
+  hostname: "localhost",
+  port: 5432,
+  ssl: false,
+  username: "crate",
+  password: "crate",
+  database: "doc",
+  backoff_type: :stop,
+  max_restarts: 0,
+  show_sensitive_data_on_connection_error: true,
+]
+
+{:ok, conn} = Postgrex.start_link(options)
+result = Postgrex.query!(conn, "SELECT region, mountain, height FROM sys.summits ORDER BY height DESC LIMIT 5", [])
+IO.inspect(result)
+```
+
+:::{include} ../_cratedb.md
+:::
+```shell
+mix deps.get
+mix run example.exs
+```
+
+:::{rubric} CrateDB Cloud
+:::
+
+For connecting to CrateDB Cloud, adjust the `ssl: true` parameter,
+and replace hostname, username, and password with values matching your
+environment.
+```elixir
+options = [
+  hostname: "testcluster.cratedb.net",
+  port: 5432,
+  ssl: true,
+  username: "admin",
+  password: "password",
+  database: "doc",
+  backoff_type: :stop,
+  max_restarts: 0,
+  show_sensitive_data_on_connection_error: true,
+]
+```
+
+## Example
+
+:::{card}
+:link: https://github.com/crate/cratedb-examples/tree/main/by-language/elixir-postgrex
+:link-type: url
+{material-outlined}`play_arrow;2em`
+Connect to CrateDB and CrateDB Cloud using Elixir.
++++
+Demonstrates a basic example that uses the Postgrex driver.
+:::
+
+[![Elixir Postgrex](https://github.com/crate/cratedb-examples/actions/workflows/lang-elixir-postgrex.yml/badge.svg)](https://github.com/crate/cratedb-examples/actions/workflows/lang-elixir-postgrex.yml)
+
+
+[Postgrex]: https://hexdocs.pm/postgrex/readme.html

docs/connect/index.md

@@ -49,6 +49,20 @@ CrateDB drivers and adapters for supported programming languages, frameworks, an
 :gutter: 3
 :padding: 0
 
+::::{grid-item-card} Elixir
+:link: connect-elixir
+:link-type: ref
+:link-alt: Connect to CrateDB using Elixir
+:padding: 3
+:text-align: center
+:class-card: sd-pt-3
+:class-body: sd-fs-1
+:class-title: sd-fs-6
+```{image} https://cdn.prod.website-files.com/6047a9e35e5dc54ac86ddd90/63064ea203056632171dfaa2_43c017db.png
+:width: 40px
+```
+::::
+
 ::::{grid-item-card} Java
 :link: connect-java
 :link-type: ref
@@ -176,6 +190,7 @@ application
 :maxdepth: 1
 :hidden:
 
+elixir/index
 java
 javascript
 php