Generate proper fake relationship for model factory

src/Generators/FactoryGenerator.php

@@ -72,15 +72,41 @@ protected function buildDefinition(Model $model)
                 continue;
             }
 
-            if (in_array($column->dataType(), ['id', 'uuid'])) {
-                $foreign = $column->isForeignKey();
+            $foreign = $column->isForeignKey();
+            if ($foreign) {
+                $table = Str::beforeLast($column->name(), '_id');
+                $key = 'id';
+
+                if (Str::contains($foreign, '.')) {
+                    [$table, $key] = explode('.', $foreign);
+                } elseif ($foreign !== 'foreign') {
+                    $table = $foreign;
+
+                    if (Str::startsWith($column->name(), $foreign . '_')) {
+                        $key = Str::after($column->name(), $foreign . '_');
+                    } elseif (Str::startsWith($column->name(), Str::snake(Str::singular($foreign)) . '_')) {
+                        $key = Str::after($column->name(), Str::snake(Str::singular($foreign)) . '_');
+                    } elseif (!Str::endsWith($column->name(), '_id')) {
+                        $key = $column->name();
+                    }
+                }
+
+                $class = Str::studly(Str::singular($table));
 
-                if ($foreign && $foreign !== 'foreign') {
-                    $class = Str::studly(Str::singular($foreign));
+                if ($key === 'id') {
+                    $definition .= self::INDENT . "'{$column->name()}' => ";
+                    $definition .= sprintf('factory(%s::class)', '\\' . $model->fullyQualifiedNamespace() . '\\' . $class);
+                    $definition .= ',' . PHP_EOL;
                 } else {
-                    $name = Str::beforeLast($column->name(), '_id');
-                    $class = Str::studly($column->attributes()[0] ?? $name);
+                    $definition .= self::INDENT . "'{$column->name()}' => function () {";
+                    $definition .= PHP_EOL;
+                    $definition .= self::INDENT . '    ' . sprintf('return factory(%s::class)->create()->%s;', '\\' . $model->fullyQualifiedNamespace() . '\\' . $class, $key);
+                    $definition .= PHP_EOL;
+                    $definition .= self::INDENT . '},' . PHP_EOL;
                 }
+            } elseif (in_array($column->dataType(), ['id', 'uuid'])) {
+                $name = Str::beforeLast($column->name(), '_id');
+                $class = Str::studly($column->attributes()[0] ?? $name);
 
                 $definition .= self::INDENT . "'{$column->name()}' => ";
                 $definition .= sprintf('factory(%s::class)', '\\' . $model->fullyQualifiedNamespace() . '\\' . $class);

tests/Feature/Generator/FactoryGeneratorTest.php

@@ -149,7 +149,7 @@ public function modelTreeDataProvider()
             ['definitions/unconventional.bp', 'database/factories/TeamFactory.php', 'factories/unconventional.php'],
             ['definitions/model-modifiers.bp', 'database/factories/ModifierFactory.php', 'factories/model-modifiers.php'],
             ['definitions/model-key-constraints.bp', 'database/factories/OrderFactory.php', 'factories/model-key-constraints.php'],
-//            ['definitions/unconventional-foreign-key.bp', 'database/factories/StateFactory.php', 'factories/unconventional-foreign-key.php'],
+            ['definitions/unconventional-foreign-key.bp', 'database/factories/StateFactory.php', 'factories/unconventional-foreign-key.php'],
         ];
     }
 }

tests/fixtures/definitions/unconventional-foreign-key.bp

@@ -1,4 +1,7 @@
 models:
   State:
     name: string
-    country_code: string foreign:countries.code
+    countries_id: id foreign:countries
+    country_code: string foreign:countries
+    ccid: string foreign:countries
+    c_code: string foreign:countries.code

tests/fixtures/factories/unconventional-foreign-key.php

@@ -8,8 +8,15 @@
 $factory->define(State::class, function (Faker $faker) {
     return [
         'name' => $faker->name,
+        'countries_id' => factory(\App\Country::class),
         'country_code' => function () {
             return factory(\App\Country::class)->create()->code;
         },
+        'ccid' => function () {
+            return factory(\App\Country::class)->create()->ccid;
+        },
+        'c_code' => function () {
+            return factory(\App\Country::class)->create()->code;
+        },
     ];
 });

tests/fixtures/migrations/unconventional-foreign-key.php

@@ -16,8 +16,13 @@ public function up()
         Schema::create('states', function (Blueprint $table) {
             $table->id();
             $table->string('name');
+            $table->foreignId('countries_id')->constrained('countries')->cascadeOnDelete();
             $table->string('country_code');
             $table->foreign('country_code')->references('code')->on('countries')->onDelete('cascade');
+            $table->string('ccid');
+            $table->foreign('ccid')->references('ccid')->on('countries')->onDelete('cascade');
+            $table->string('c_code');
+            $table->foreign('c_code')->references('code')->on('countries')->onDelete('cascade');
             $table->timestamps();
         });
     }