Unable to set field value programmatically.

Sorry InvalidArgumentException is thrown by DynamicEntityReference::setValue()

perhaps this will help.

Here is little progress.

Thank you very much.

Yeah I am following that will review/test/rtbc it once green :)

I tried some stuff but no luck. This patch is use less but I am uploading it anyway.

1. +++ b/src/Plugin/DataType/DynamicEntityReference.php
   @@ -89,8 +89,11 @@ class DynamicEntityReference extends EntityReference {
   +    if (!isset($value)) {
   +      $this->target = NULL;
   +    }
   +    elseif ($value instanceof EntityInterface) {
   +      $this->target = $value->getTypedData();
   

   These changes are copied form EntityReference

2. +++ b/src/Plugin/DataType/DynamicEntityReference.php
   @@ -89,8 +89,11 @@ class DynamicEntityReference extends EntityReference {
        elseif (!is_scalar($value) || $this->getTargetDefinition()->getEntityTypeId() === NULL) {
   

   so when we do

   $entity->field_test_taxonomy_term->target_id = $tid;
   $entity->field_test_taxonomy_term->target_type = $entity_type_id;

   it throws exception when we try to access $entity->field_test_taxonomy_term->entity because entity type id is not set.

3. +++ b/src/Plugin/Field/FieldType/DynamicEntityReferenceItem.php
   @@ -55,7 +55,7 @@ class DynamicEntityReferenceItem extends ConfigurableEntityReferenceItem {
   -    $properties['target_id'] = DataDefinition::create('string')
   +    $properties['target_id'] = DataDefinition::create('integer')
   

   useless change we don't need this. But we have to update this function cuz base class has updated it.

4. +++ b/src/Plugin/Field/FieldType/DynamicEntityReferenceItem.php
   @@ -194,7 +194,7 @@ class DynamicEntityReferenceItem extends ConfigurableEntityReferenceItem {
   +    if (!empty($values['target_type']) && empty($values['entity'])) {
   

   I dono about this either just trying some stuff.

Main pain point is $entity->field_test_taxonomy_term->entity = $term; we can't do that at all. But we can set default value of field just fine see http://cgit.drupalcode.org/dynamic_entity_reference/tree/src/Tests/Dynam...

Thank you very much @larowlan for fixing it :)
Done some clean up and added another test. Haven't clean up DynamicEntityReferenceItem we'll do it in #2365331: Update DynamicEntityReferenceItem according to EntityReferenceItem.

Other then these issue I think it is RTBC.

1. +++ b/src/Plugin/DataType/DynamicEntityReference.php
   @@ -63,36 +47,19 @@ class DynamicEntityReference extends EntityReference {
   +    elseif ($value instanceof EntityInterface) {
   

   I think DER should only support this case and throw exception for non entity items. ER has target_type in field_storage so it is ok for it to pass id as entity but not for DER. Thoughts??

2. +++ b/src/Tests/DynamicEntityReferenceItemTest.php
   @@ -0,0 +1,205 @@
   +   * Tests the entity reference field type for referencing content entities.
   

   ops copy paste gone wrong :/

I committed it with following doc fixes.

Next stop is #2365331: Update DynamicEntityReferenceItem according to EntityReferenceItem