function mathfield_field_settings_form in Math Field 7

Implements hook_field_settings_form().

File

./mathfield.module, line 37

Adds a dynamic math expression field.

Code

function mathfield_field_settings_form($field, $instance, $has_data) {
  $settings = $field['settings'];
  $form['expression'] = array(
    '#type' => 'textarea',
    '#title' => t('Math Expression'),
    '#description' => t("Enter mathematical expressions such as 2 + 2 or sqrt(5). You may assign variables and create mathematical functions and evaluate them. Use ';' to separate these. For example: f(x) = x + 2; f(2)."),
    '#default_value' => $settings['expression'],
  );
  $form['field_dependencies'] = array(
    '#type' => 'value',
    '#value' => $settings['field_dependencies'],
    '#element_validate' => array(
      'mathfield_validate_expression',
    ),
  );
  $form['decimal_separator'] = array(
    '#type' => 'select',
    '#title' => t('Decimal marker'),
    '#options' => array(
      '.' => t('Decimal point'),
      ',' => t('Comma'),
    ),
    '#default_value' => $settings['decimal_separator'],
    '#description' => t('The character to mark the decimal point.'),
  );
  $form['precision'] = array(
    '#type' => 'select',
    '#title' => t('Precision'),
    '#options' => drupal_map_assoc(range(10, 32)),
    '#default_value' => $settings['precision'],
    '#description' => t('The total number of digits to store in the database, including those to the right of the decimal.'),
    '#disabled' => $has_data,
  );
  $form['scale'] = array(
    '#type' => 'select',
    '#title' => t('Scale'),
    '#options' => drupal_map_assoc(range(0, 10)),
    '#default_value' => $settings['scale'],
    '#description' => t('The number of digits to the right of the decimal.'),
    '#disabled' => $has_data,
  );
  return $form;
}