Working follow and unfollow interactions for users

priv/repo/migrations/20260403012654_follow_feature.exs

@@ -0,0 +1,53 @@
+defmodule Mixer.Repo.Migrations.FollowFeature do
+  @moduledoc """
+  Updates resources based on their most recent snapshots.
+
+  This file was autogenerated with `mix ash_postgres.generate_migrations`
+  """
+
+  use Ecto.Migration
+
+  def up do
+    create table(:follows, primary_key: false) do
+      add :id, :uuid, null: false, default: fragment("gen_random_uuid()"), primary_key: true
+
+      add :created_at, :utc_datetime_usec,
+        null: false,
+        default: fragment("(now() AT TIME ZONE 'utc')")
+
+      add :follower_id,
+          references(:users,
+            column: :id,
+            name: "follows_follower_id_fkey",
+            type: :uuid,
+            prefix: "public",
+            on_delete: :delete_all
+          ), primary_key: true, null: false
+
+      add :following_id,
+          references(:users,
+            column: :id,
+            name: "follows_following_id_fkey",
+            type: :uuid,
+            prefix: "public",
+            on_delete: :delete_all
+          ), primary_key: true, null: false
+    end
+
+    create unique_index(:follows, [:follower_id, :following_id],
+             name: "follows_unique_follow_index"
+           )
+  end
+
+  def down do
+    drop_if_exists unique_index(:follows, [:follower_id, :following_id],
+                     name: "follows_unique_follow_index"
+                   )
+
+    drop constraint(:follows, "follows_follower_id_fkey")
+
+    drop constraint(:follows, "follows_following_id_fkey")
+
+    drop table(:follows)
+  end
+end

priv/resource_snapshots/repo/follows/20260403012655.json

@@ -0,0 +1,125 @@
+{
+  "attributes": [
+    {
+      "allow_nil?": false,
+      "default": "fragment(\"gen_random_uuid()\")",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": true,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "id",
+      "type": "uuid"
+    },
+    {
+      "allow_nil?": false,
+      "default": "fragment(\"(now() AT TIME ZONE 'utc')\")",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "created_at",
+      "type": "utc_datetime_usec"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": true,
+      "references": {
+        "deferrable": false,
+        "destination_attribute": "id",
+        "destination_attribute_default": null,
+        "destination_attribute_generated": null,
+        "index?": false,
+        "match_type": null,
+        "match_with": null,
+        "multitenancy": {
+          "attribute": null,
+          "global": null,
+          "strategy": null
+        },
+        "name": "follows_follower_id_fkey",
+        "on_delete": "delete",
+        "on_update": null,
+        "primary_key?": true,
+        "schema": "public",
+        "table": "users"
+      },
+      "scale": null,
+      "size": null,
+      "source": "follower_id",
+      "type": "uuid"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": true,
+      "references": {
+        "deferrable": false,
+        "destination_attribute": "id",
+        "destination_attribute_default": null,
+        "destination_attribute_generated": null,
+        "index?": false,
+        "match_type": null,
+        "match_with": null,
+        "multitenancy": {
+          "attribute": null,
+          "global": null,
+          "strategy": null
+        },
+        "name": "follows_following_id_fkey",
+        "on_delete": "delete",
+        "on_update": null,
+        "primary_key?": true,
+        "schema": "public",
+        "table": "users"
+      },
+      "scale": null,
+      "size": null,
+      "source": "following_id",
+      "type": "uuid"
+    }
+  ],
+  "base_filter": null,
+  "check_constraints": [],
+  "create_table_options": null,
+  "custom_indexes": [],
+  "custom_statements": [],
+  "has_create_action": true,
+  "hash": "F54EC67C792D0DBDA389BB372D0403325AEAD4C232678C19BB951AA058813F0A",
+  "identities": [
+    {
+      "all_tenants?": false,
+      "base_filter": null,
+      "index_name": "follows_unique_follow_index",
+      "keys": [
+        {
+          "type": "atom",
+          "value": "follower_id"
+        },
+        {
+          "type": "atom",
+          "value": "following_id"
+        }
+      ],
+      "name": "unique_follow",
+      "nils_distinct?": true,
+      "where": null
+    }
+  ],
+  "multitenancy": {
+    "attribute": null,
+    "global": null,
+    "strategy": null
+  },
+  "repo": "Elixir.Mixer.Repo",
+  "schema": null,
+  "table": "follows"
+}