[1.7.0] Add DB storage driver (#82)

src/Tenant.php

@@ -0,0 +1,102 @@
+<?php
+
+namespace Stancl\Tenancy;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Tenant extends Model
+{
+    protected $guarded = [];
+    protected $primaryKey = 'uuid';
+    public $incrementing = false;
+    public $timestamps = false;
+
+    /**
+     * Decoded data from the data column.
+     *
+     * @var object
+     */
+    private $dataObject;
+
+    public static function dataColumn()
+    {
+        return config('tenancy.storage.db.data_column', 'data');
+    }
+
+    public static function customColumns()
+    {
+        return config('tenancy.storage.db.custom_columns', []);
+    }
+
+    public function getConnectionName()
+    {
+        return config('tenancy.storage.db.connection', 'central');
+    }
+
+    public static function getAllTenants(array $uuids)
+    {
+        $tenants = $uuids ? static::findMany($uuids) : static::all();
+
+        return $tenants->map([__CLASS__, 'decodeData'])->toBase();
+    }
+
+    public function decoded()
+    {
+        return static::decodeData($this);
+    }
+
+    /**
+     * Return a tenant array with data decoded into separate keys.
+     *
+     * @param Tenant|array $tenant
+     * @return array
+     */
+    public static function decodeData($tenant)
+    {
+        $tenant = $tenant instanceof self ? (array) $tenant->attributes : $tenant;
+        $decoded = json_decode($tenant[$dataColumn = static::dataColumn()], true);
+
+        foreach ($decoded as $key => $value) {
+            $tenant[$key] = $value;
+        }
+
+        // If $tenant[$dataColumn] has been overriden by a value, don't delete the key.
+        if (! array_key_exists($dataColumn, $decoded)) {
+            unset($tenant[$dataColumn]);
+        }
+
+        return $tenant;
+    }
+
+    public function getFromData(string $key)
+    {
+        $this->dataArray = $this->dataArray ?? json_decode($this->{$this->dataColumn()}, true);
+
+        return $this->dataArray[$key] ?? null;
+    }
+
+    public function get(string $key)
+    {
+        return $this->$key ?? $this->getFromData($key) ?? null;
+    }
+
+    /** @todo In v2, this should return an associative array. */
+    public function getMany(array $keys): array
+    {
+        return array_map([$this, 'get'], $keys);
+    }
+
+    public function put(string $key, $value)
+    {
+        if (array_key_exists($key, $this->customColumns())) {
+            $this->update([$key => $value]);
+        } else {
+            $obj = json_decode($this->{$this->dataColumn()});
+            $obj->$key = $value;
+
+            $this->update([$this->dataColumn() => json_encode($obj)]);
+        }
+
+        return $value;
+    }
+}