clean install

web/profiles/farm/modules/asset/seed/config/install/asset.type.seed.yml

@@ -0,0 +1,11 @@
+langcode: en
+status: true
+dependencies:
+  enforced:
+    module:
+      - farm_seed
+id: seed
+label: Seed
+description: ''
+workflow: asset_default
+new_revision: true

web/profiles/farm/modules/asset/seed/farm_seed.info.yml

@@ -0,0 +1,10 @@
+name: Seed asset
+description: Adds a Seed asset type.
+type: module
+package: farmOS Assets
+core_version_requirement: ^10
+dependencies:
+  - farm:asset
+  - farm:farm_entity
+  - farm:farm_plant_type
+  - farm:farm_season

web/profiles/farm/modules/asset/seed/src/Plugin/Asset/AssetType/Seed.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Drupal\farm_seed\Plugin\Asset\AssetType;
+
+use Drupal\farm_entity\Plugin\Asset\AssetType\FarmAssetType;
+
+/**
+ * Provides the seed asset type.
+ *
+ * @AssetType(
+ *   id = "seed",
+ *   label = @Translation("Seed"),
+ * )
+ */
+class Seed extends FarmAssetType {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildFieldDefinitions() {
+    $fields = parent::buildFieldDefinitions();
+    $field_info = [
+      'plant_type' => [
+        'type' => 'entity_reference',
+        'label' => $this->t('Crop/variety'),
+        'description' => $this->t("Enter this seed asset's crop/variety."),
+        'target_type' => 'taxonomy_term',
+        'target_bundle' => 'plant_type',
+        'auto_create' => TRUE,
+        'required' => TRUE,
+        'multiple' => TRUE,
+        'weight' => [
+          'form' => -90,
+          'view' => -90,
+        ],
+      ],
+      'season' => [
+        'type' => 'entity_reference',
+        'label' => $this->t('Season'),
+        'description' => $this->t('Assign this to a season for easier searching later.'),
+        'target_type' => 'taxonomy_term',
+        'target_bundle' => 'season',
+        'auto_create' => TRUE,
+        'multiple' => TRUE,
+        'weight' => [
+          'form' => -50,
+          'view' => -50,
+        ],
+      ],
+    ];
+    foreach ($field_info as $name => $info) {
+      $fields[$name] = $this->farmFieldFactory->bundleFieldDefinition($info);
+    }
+    return $fields;
+  }
+
+}