Introduction
You already have a content type with one or more fields in it. Later, you realize you should rename it due to whatever reason. Lets take an example:
- A text field(long text area)
- Image field
Drupal provides no way to rename existing fields of a content type. But, you can do this programatically or by a db query.
Programmatic Solution
Do following steps:
- Add the fields into your content type, with the name you want
- See below php code for drupal
$query = db_select( 'node', 'n' );
$query
->condition( 'n.type', 'article' )
->fields('n', array('nid'));
$result = $query
->execute()
->fetchAll();
foreach( $result as $row ) {
$nd = Drupal\node\Entity\Node::load($row->nid);
$nd->body = $nd->field_article_introduction;
$nd->field_image = $nd->field_top_image;
$nd->save();
}The idea is to fetch all such nodes for that particular content type, and assign old values to the new fields you just created.
- You can put multiple fields if you have in the php code above.
- Make sure you have copied content, by loading one or two nodes
- Find out all the views you have created wiht old fields. You need to put new fields with same settings.
- Find out the occurrences of those old fields in your custom theme code.
- Now, delete old fields from your content type
Clear the cache and test it.
