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<?php
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/**
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* @file
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* Install, update and uninstall functions for the list module.
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*/
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7
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/**
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* Implements hook_field_schema().
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*/
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function list_field_schema($field) {
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switch ($field['type']) {
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case 'list_text':
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$columns = array(
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'value' => array(
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'type' => 'varchar',
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'length' => 255,
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'not null' => FALSE,
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),
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);
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break;
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case 'list_float':
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$columns = array(
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'value' => array(
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'type' => 'float',
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'not null' => FALSE,
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),
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);
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break;
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case 'list_integer':
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case 'list_boolean':
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$columns = array(
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'value' => array(
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'type' => 'int',
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'not null' => FALSE,
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),
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);
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break;
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}
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return array(
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'columns' => $columns,
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'indexes' => array(
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'value' => array('value'),
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),
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);
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}
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/**
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* Rename the list field types and change 'allowed_values' format.
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*/
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function list_update_7001() {
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$fields = _update_7000_field_read_fields(array('module' => 'list'));
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foreach ($fields as $field) {
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$update = array();
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55
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// Translate the old string format into the new array format.
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$allowed_values = $field['settings']['allowed_values'];
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if (is_string($allowed_values)) {
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$position_keys = ($field['type'] == 'list');
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$allowed_values = _list_update_7001_extract_allowed_values($allowed_values, $position_keys);
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// Additionally, float keys need to be disambiguated ('.5' is '0.5').
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if ($field['type'] == 'list_number' && !empty($allowed_values)) {
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$keys = array_map(create_function('$a', 'return (string) (float) $a;'), array_keys($allowed_values));
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$allowed_values = array_combine($keys, array_values($allowed_values));
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}
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// Place the new setting in the existing serialized 'data' column.
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$data = db_query("SELECT data FROM {field_config} WHERE id = :id", array(':id' => $field['id']))->fetchField();
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$data = unserialize($data);
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$data['settings']['allowed_values'] = $allowed_values;
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$update['data'] = serialize($data);
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}
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// Rename field types.
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$types = array('list' => 'list_integer', 'list_number' => 'list_float');
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if (isset($types[$field['type']])) {
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$update['type'] = $types[$field['type']];
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}
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// Save the new data.
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if ($update) {
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$query = db_update('field_config')
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->condition('id', $field['id'])
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->fields($update)
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->execute();
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}
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}
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}
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/**
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* Helper function for list_update_7001: extract allowed values from a string.
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*
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* This reproduces the parsing logic in use before D7 RC2.
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*/
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function _list_update_7001_extract_allowed_values($string, $position_keys) {
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$values = array();
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$list = explode("\n", $string);
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$list = array_map('trim', $list);
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$list = array_filter($list, 'strlen');
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foreach ($list as $key => $value) {
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// Check for a manually specified key.
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if (strpos($value, '|') !== FALSE) {
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list($key, $value) = explode('|', $value);
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}
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// Otherwise see if we need to use the value as the key. The "list" type
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// will automatically convert non-keyed lines to integers.
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elseif (!$position_keys) {
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$key = $value;
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}
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$values[$key] = (isset($value) && $value !== '') ? $value : $key;
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}
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return $values;
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}
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/**
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* @addtogroup updates-7.x-extra
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* @{
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*/
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/**
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* Re-apply list_update_7001() for deleted fields.
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*/
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function list_update_7002() {
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// See http://drupal.org/node/1022924: list_update_7001() intitally
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// overlooked deleted fields, which then caused fatal errors when the fields
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// were being purged.
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// list_update_7001() has the required checks to ensure it is reentrant, so
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// it can simply be executed once more..
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list_update_7001();
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}
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/**
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* @} End of "addtogroup updates-7.x-extra".
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*/
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