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Once a text field has data stored, it is not very easy or obvious how to change its maximum length. In the UI there is a message warning you that the field cannot be changed, because there is existing data. Sometimes it is necessary to change these values. It seems that there are a few ways and some resources to do this in Drupal 7, but I could not find a way to do this in Drupal 8. I decided to create a small function to do it:

Caution: Any change in the database needs to be done carefully. Before you continue please create a backup of your database.

/**
 * Update the length of a text field which already contains data.
 *
 * @param string $entity_type_id
 * @param string $field_name
 * @param integer $new_length
 */
function _module_change_text_field_max_length ($entity_type_id, $field_name, $new_length) {
  $name = 'field.storage.' . $entity_type_id . "." . $field_name;

  // Get the current settings
  $result = \Drupal::database()->query(
    'SELECT data FROM {config} WHERE name = :name',
    [':name' => $name]
  )->fetchField();
  $data = unserialize($result);
  $data['settings']['max_length'] = $new_length;

  // Write settings back to the database.
  \Drupal::database()->update('config')
    ->fields(['data' => serialize($data)])
    ->condition('name', $name)
    ->execute();

  // Update the value column in both the _data and _revision tables for the field
  $table = $entity_type_id . "__" . $field_name;
  $table_revision = $entity_type_id . "_revision__" . $field_name;
  $new_field = ['type' => 'varchar', 'length' => $new_length];
  $col_name = $field_name . '_value';
  \Drupal::database()->schema()->changeField($table, $col_name, $col_name, $new_field);
  \Drupal::database()->schema()->changeField($table_revision, $col_name, $col_name, $new_field);

  // Flush the caches.
  drupal_flush_all_caches();
}

This method needs the name of the entity, the name of the field, and the name and the new length.

And we can use it like this:

   _module_change_text_field_max_length('node', 'field_text', 280);

Usually, this code should be placed in (or called from) a hook_update so it will be executed automatically in the update.

And if the new length is too long to be placed in a regular input area, you can use the Textarea widget for text fields which will allow you to use the larger text area form element for text fields.

The movements and networks that Micky is a part of

Here are all the links from the slide Micky told you not to try to write everything down from.

Agarics are members of a few networks and movements both local and global:

• Free Software Foundation - fsf.org
• United States Federation of Worker Cooperatives - usworker.coop
• Solidarity Economy Network - ussen.org
• May First People Link - MayFirst.org
  • Technology and Revolution - techandrev.org
• Industrial Workers of the World - iww.org
• Platform Cooperativism - platform.coop
• The Center for Global Justice - globaljusticecenter.org
• The TechWorkerCoop - techworker.coop
• Mass MeshNet - MassMesh.org
• Radical Connections Network - RadicalConnections.net

Additional groups and movements

And some that didn't make the slides, that other Agarics are a part of:

• LibreSaaS
• Incarcerated Workers Organizing Committee
• Visions Unite (People Who Give a Damn)
• Cooperation Jackson
• IndieWeb