I have created a field Text(plain, long) and have a custom template which currently only outputs this field.
{{ content.field_testing }} When the output is rendered, all the line breaks are converted to <br> I need to remove. I could add some filters but I figure there must be a way to prevent it in the first place. How can I do this?
Since you are using a custom template, the quicker way is just to use the replace() filter.
{{ content.field_testing|replace({'<br>': '', '<br />': ''}) }} The field formatter used in the case of a plain text field doesn't have settings, so you cannot decide if the formatter should output the <br /> tags you want to remove. It would probably make sense in few cases, especially if you need to replace those <br /> with other text, but somebody could argue that if you don't need them, you could just avoid entering new lines in the field.
The alternative would be implementing a different field formatter, but this is not as quicker as using a filter. If you just need this for this exact purpose, it sounds a bit excessive.
{{ item.content|render|replace({'<br>': '', '<br />': ''})|raw }}. Probably better to just create a true "plain text" formatter (br's are really annoying if using <pre> or <code>...), but I was lazy and this was easier to without an extra module. The default FieldFormatter for Text(plain, long) is BasicStringFormatter, and it does this:
$elements[$delta] = [ '#type' => 'inline_template', '#template' => '{{ value|nl2br }}', '#context' => ['value' => $item->value], ]; You could overwrite it without the nl2br.
Finally i created a new formatter
<?php namespace Drupal\inception\Plugin\Field\FieldFormatter; use Drupal\Core\Field\FormatterBase; use Drupal\Core\Field\FieldItemListInterface; /** * Plugin implementation of the 'basic_string_no_br' formatter. * * @FieldFormatter( * id = "basic_string_no_br", * label = @Translation("Plain text No BR"), * field_types = { * "string_long", * }, * ) */ class BasicStringNoBrFormatter extends FormatterBase { /** * {@inheritdoc} */ public function viewElements(FieldItemListInterface $items, $langcode) { $elements = []; foreach ($items as $delta => $item) { // The text value has no text format assigned to it, so the user input // should equal the output, including newlines. $elements[$delta] = [ '#type' => 'inline_template', '#template' => '{{ value }}',//Plain value without nl2br '#context' => ['value' => $item->value], ]; } return $elements; } }