56 lines
1.5 KiB
PHP
56 lines
1.5 KiB
PHP
<?php
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namespace Drupal\fraction\Plugin\views\field;
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use Drupal\views\Plugin\views\field\EntityField;
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use Drupal\Core\Form\FormStateInterface;
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/**
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* Field handler for Fraction fields.
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*
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* Overrides the clickSort() method to use a formula that divides
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* the numerator by the denominator.
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*
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* Overrides the buildOptionsForm() method to remove the 'click_sort_column'
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* form element.
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*
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* @ingroup views_field_handlers
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*
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* @ViewsField("fraction_field")
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*/
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class FractionField extends EntityField {
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/**
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* {@inheritdoc}
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*/
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public function clickSort($order) {
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// Ensure the main table for this field is included.
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$this->ensureMyTable();
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// Formula for calculating the final value, by dividing numerator by
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// denominator. These are available as additional fields.
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$numerator = $this->tableAlias . '.' . $this->field . '_numerator';
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$denominator = $this->tableAlias . '.' . $this->field . '_denominator';
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// Multiply the numerator field by 1.0 so the database returns a decimal
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// from the computation.
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$formula = '1.0 * ' . $numerator . ' / ' . $denominator;
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// Add the orderby.
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$this->query->addOrderBy(NULL, $formula, $order, $this->tableAlias . '_decimal');
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}
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/**
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* {@inheritdoc}
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*/
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public function buildOptionsForm(&$form, FormStateInterface $form_state) {
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// Inherit the parent options form.
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parent::buildOptionsForm($form, $form_state);
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// Remove the 'click_sort_column' form element.
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unset($form['click_sort_column']);
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}
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}
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