/**
* Helper that builds a results array (with results and pagination info)
*
* @param object $model
* @param array $sortOptions (with 'field' and 'direction' keys)
* @param array $filters (see getFilters helper for the value types)
*/
public static function getRows($model, $sortOptions, $filters = null)
{
//get the columns and sort options
$columns = Column::getColumns($model, false);
$sort = Sort::get($model, $sortOptions['field'], $sortOptions['direction']);
//get things going by grouping the set
$query = $model::group_by($model->table() . '.' . $model::$key);
//set up initial array states for the selects
$selects = array(DB::raw($model->table() . '.' . $model::$key), DB::raw($model->table() . '.*'));
//then we set the filters
if ($filters && is_array($filters)) {
foreach ($filters as $filter) {
if (!($fieldObject = Field::get($filter['field'], $filter, $model))) {
continue;
}
$fieldObject->filterQuery($query, $model);
}
}
//determines if the sort should have the table prefixed to it
$sortOnTable = true;
//iterate over the columns to check if we need to join any values or add any extra columns
foreach ($columns['columns'] as $field => $column) {
//if this is a related column, we'll need to add some joins
$column->filterQuery($query, $selects, $model);
//if this is a related field or
if (($column->isRelated || $column->select) && $column->field === $sort->field) {
$sortOnTable = false;
}
}
//if the sort is on the model's table, prefix the table name to it
if ($sortOnTable) {
$sort->field = $model->table() . '.' . $sort->field;
}
//if there is a global per page limit set, make sure the paginator uses that
$per_page = $model->per_page() ? $model->per_page() : 20;
$global_per_page = Config::get('administrator::administrator.global_per_page', NULL);
if ($global_per_page && is_numeric($global_per_page)) {
$per_page = $global_per_page;
}
/**
* We need to do our own pagination since there is a bug (!!!!!!!!!!!!!!) in the L3 paginator when using groupings :(
* When L4 is released, this problem will go away and we'll be able to use the paginator again
* Trust me, I understand how ghetto this is. I also understand that it may not work too well on other drivers. Let me know...
*/
//first get the sql sans selects
$sql = $query->table->grammar->select($query->table);
//then we need to round out the inner select
$sql = "SELECT {$model->table()}.{$model::$key} " . $sql;
//then wrap the inner table and perform the count
$sql = "SELECT COUNT({$model::$key}) AS aggregate FROM ({$sql}) AS agg";
//then perform the count query
$results = $query->table->connection->query($sql, $query->table->bindings);
$num_rows = $results[0]->aggregate;
$page = (int) \Input::get('page', 1);
$last = (int) ceil($num_rows / $per_page);
//if the current page is greater than the last page, set the current page to the last page
$page = $page > $last ? $last : $page;
//now we need to limit and offset the rows in remembrance of our dear lost friend paginate()
$query->take($per_page);
$query->skip($per_page * ($page === 0 ? $page : $page - 1));
//order the set by the model table's id
$query->order_by($sort->field, $sort->direction);
//then retrieve the rows
$rows = $query->distinct()->get($selects);
$results = array();
//convert the resulting set into arrays
foreach ($rows as $item) {
//iterate over the included and related columns
$onTableColumns = array_merge($columns['includedColumns'], $columns['relatedColumns']);
$arr = array();
foreach ($onTableColumns as $field => $col) {
$arr[$field] = $item->get_attribute($field);
}
//then grab the computed, unsortable columns
foreach ($columns['computedColumns'] as $col) {
$arr[$col] = $item->{$col};
}
$results[] = $arr;
}
return array('page' => $page, 'last' => $last, 'total' => $num_rows, 'results' => $results);
}
<?php
use Admin\Libraries\ModelHelper;
use Admin\Libraries\Fields\Field;
use Admin\Libraries\Column;
use Admin\Libraries\Sort;
//View Composers
//admin index view
View::composer('administrator::index', function ($view) {
//get a model instance that we'll use for constructing stuff
$modelInstance = ModelHelper::getModel($view->modelName);
$columns = Column::getColumns($modelInstance);
$editFields = Field::getEditFields($modelInstance);
$bundleConfig = Bundle::get('administrator');
//add the view fields
$view->modelTitle = Config::get('administrator::administrator.models.' . $view->modelName . '.title', $view->modelName);
$view->modelSingle = Config::get('administrator::administrator.models.' . $view->modelName . '.single', $view->modelTitle);
$view->columns = $columns['columns'];
$view->includedColumns = $columns['includedColumns'];
$view->primaryKey = $modelInstance::$key;
$view->sort = Sort::get($modelInstance)->toArray();
$view->rows = ModelHelper::getRows($modelInstance, $view->sort);
$view->editFields = $editFields['arrayFields'];
$view->dataModel = $editFields['dataModel'];
$view->filters = ModelHelper::getFilters($modelInstance);
$view->baseUrl = URL::to_route('admin_index');
$view->bundleHandles = $bundleConfig['handles'];
$view->expandWidth = ModelHelper::getExpandWidth($modelInstance);
$view->modelInstance = $modelInstance;
$view->model = isset($view->model) ? $view->model : false;
});
