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Newly created fields are not being displayed

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1

I have a content type "Article" with fields and data that was migrated from a Drupal 7 website.

1. In the admin/structure/types/manage/article/fields I added a new text field called "Test" with default value some of some HTML added.


2. Then, I went to manage form display and disabled that field from the form


3. Then I went to manage display of the appropriate view mode and enabled that field.


4. Flushed the cache

Reloading the article page doesn't display the newly added field. I believe it is because there is no value in it, but shouldn't adding a default value to the field pre-populate that field for all previous content belonging to that content type? Or am I missing something here?

8 entities

share|improve this question

edited Jul 9 at 15:27

Jdrupal

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asked May 26 at 6:58

Rana PrathapRana Prathap

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add a comment
 | 

1

I have a content type "Article" with fields and data that was migrated from a Drupal 7 website.

1. In the admin/structure/types/manage/article/fields I added a new text field called "Test" with default value some of some HTML added.


2. Then, I went to manage form display and disabled that field from the form


3. Then I went to manage display of the appropriate view mode and enabled that field.


4. Flushed the cache

Reloading the article page doesn't display the newly added field. I believe it is because there is no value in it, but shouldn't adding a default value to the field pre-populate that field for all previous content belonging to that content type? Or am I missing something here?

8 entities

share|improve this question

edited Jul 9 at 15:27

Jdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

asked May 26 at 6:58

Rana PrathapRana Prathap

10733 silver badges2020 bronze badges

add a comment
 | 

I have a content type "Article" with fields and data that was migrated from a Drupal 7 website.

1. In the admin/structure/types/manage/article/fields I added a new text field called "Test" with default value some of some HTML added.


2. Then, I went to manage form display and disabled that field from the form


3. Then I went to manage display of the appropriate view mode and enabled that field.


4. Flushed the cache

Reloading the article page doesn't display the newly added field. I believe it is because there is no value in it, but shouldn't adding a default value to the field pre-populate that field for all previous content belonging to that content type? Or am I missing something here?

8 entities

share|improve this question

edited Jul 9 at 15:27

Jdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

asked May 26 at 6:58

Rana PrathapRana Prathap

10733 silver badges2020 bronze badges

share|improve this question

edited Jul 9 at 15:27

Jdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

asked May 26 at 6:58

Rana PrathapRana Prathap

10733 silver badges2020 bronze badges

share|improve this question

edited Jul 9 at 15:27

Jdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

asked May 26 at 6:58

Rana PrathapRana Prathap

10733 silver badges2020 bronze badges

edited Jul 9 at 15:27

Jdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

edited Jul 9 at 15:27

Jdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

asked May 26 at 6:58

Rana PrathapRana Prathap

10733 silver badges2020 bronze badges

asked May 26 at 6:58

Rana PrathapRana Prathap

10733 silver badges2020 bronze badges

1 Answer
1

active

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3

Adding a default value doesn’t actually set any value in the field. To do that you must either edit the nodes you want the field on and click save, or write an update hook that sets the field value on all the nodes.

An update hook must be placed in a custom module’s .install file, in your case it would be something like:

function MY_MODULE_update_N() 
 $nodes = Drupal::entityTypeManager()->getStorage('node')->loadByProperties('type' => 'article');
 foreach ($nodes as $node) 
 $node->set('field_name', $value);
 $node->save();
 

As @4k4 mentioned if you have to update too many nodes as you have memory to, you can create batch updates using the &$sandbox, click here for more information

share|improve this answer

edited May 26 at 15:57

answered May 26 at 7:05

JdrupalJdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  If you have more than a few nodes you might run out of memory. Then you need to update in batches via the &$sandbox parameter of the update hook, see the API docs api.drupal.org/api/drupal/…
  
  – 4k4
  May 26 at 14:24
  

  
  
  
  

add a comment
 | 

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3

Adding a default value doesn’t actually set any value in the field. To do that you must either edit the nodes you want the field on and click save, or write an update hook that sets the field value on all the nodes.

An update hook must be placed in a custom module’s .install file, in your case it would be something like:

function MY_MODULE_update_N() 
 $nodes = Drupal::entityTypeManager()->getStorage('node')->loadByProperties('type' => 'article');
 foreach ($nodes as $node) 
 $node->set('field_name', $value);
 $node->save();
 

As @4k4 mentioned if you have to update too many nodes as you have memory to, you can create batch updates using the &$sandbox, click here for more information

share|improve this answer

edited May 26 at 15:57

answered May 26 at 7:05

JdrupalJdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  If you have more than a few nodes you might run out of memory. Then you need to update in batches via the &$sandbox parameter of the update hook, see the API docs api.drupal.org/api/drupal/…
  
  – 4k4
  May 26 at 14:24
  

  
  
  
  

add a comment
 | 

3

Adding a default value doesn’t actually set any value in the field. To do that you must either edit the nodes you want the field on and click save, or write an update hook that sets the field value on all the nodes.

An update hook must be placed in a custom module’s .install file, in your case it would be something like:

function MY_MODULE_update_N() 
 $nodes = Drupal::entityTypeManager()->getStorage('node')->loadByProperties('type' => 'article');
 foreach ($nodes as $node) 
 $node->set('field_name', $value);
 $node->save();
 

As @4k4 mentioned if you have to update too many nodes as you have memory to, you can create batch updates using the &$sandbox, click here for more information

share|improve this answer

edited May 26 at 15:57

answered May 26 at 7:05

JdrupalJdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  If you have more than a few nodes you might run out of memory. Then you need to update in batches via the &$sandbox parameter of the update hook, see the API docs api.drupal.org/api/drupal/…
  
  – 4k4
  May 26 at 14:24
  

  
  
  
  

add a comment
 | 

Adding a default value doesn’t actually set any value in the field. To do that you must either edit the nodes you want the field on and click save, or write an update hook that sets the field value on all the nodes.

An update hook must be placed in a custom module’s .install file, in your case it would be something like:

function MY_MODULE_update_N() 
 $nodes = Drupal::entityTypeManager()->getStorage('node')->loadByProperties('type' => 'article');
 foreach ($nodes as $node) 
 $node->set('field_name', $value);
 $node->save();
 

As @4k4 mentioned if you have to update too many nodes as you have memory to, you can create batch updates using the &$sandbox, click here for more information

share|improve this answer

edited May 26 at 15:57

answered May 26 at 7:05

JdrupalJdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

function MY_MODULE_update_N() 
 $nodes = Drupal::entityTypeManager()->getStorage('node')->loadByProperties('type' => 'article');
 foreach ($nodes as $node) 
 $node->set('field_name', $value);
 $node->save();
 

share|improve this answer

edited May 26 at 15:57

answered May 26 at 7:05

JdrupalJdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

answered May 26 at 7:05

JdrupalJdrupal

3,68144 gold badges1010 silver badges3434 bronze badges

answered May 26 at 7:05

JdrupalJdrupal

3,68144 gold badges1010 silver badges3434 bronze badges