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datatable.directory/app/Models/Row.php

103 lines
2.6 KiB

<?php
namespace App\Models;
use App\Tables\Column;
use Illuminate\Database\Eloquent\Builder;
/**
* Row in a data table
*
* @property int $id
* @property object|\RowData $data - JSONB, always containing _id
*/
class Row extends BaseModel
{
protected $casts = [
'data' => 'object',
];
protected $guarded = [];
public $timestamps = false;
public function getRowIdAttribute() {
return $this->data->_id;
}
public function setRowIdAttribute($value) {
$this->data->_id = $value;
}
public function scopeSortByCol(Builder $query, Column $column, $dir="asc")
{
$q = "data->>'".$column->id."'";
if ($column->type == 'int' || $column->type == 'float') {
$q = "CAST($q AS INTEGER)";
}
else if ($column->type == 'float') {
$q = "CAST($q AS FLOAT)";
}
if ($dir == 'asc') {
$q .= ' ASC';
} else {
$q .= ' DESC';
}
return $query->orderByRaw($q);
}
/**
* Allocate a single Global Row ID, application-unique.
*
* GRIDs are used to uniquely identify existing or proposed new rows,
* and are preserved after row modifications, to ensure change proposals have
* a clear target.
*
* @return int
*/
public static function allocateRowID()
{
return \DB::selectOne("SELECT nextval('global_row_id_seq') AS rid;")->rid;
}
/**
* Allocate a block of Global Row IDs, application-unique.
*
* @see Row::allocateRowID()
*
* @return int[] first and last
*/
public static function allocateRowIDs($count)
{
$last = \DB::selectOne("SELECT multi_nextval('global_row_id_seq', ?) AS last_id;", [$count])->last_id;
return [$last - $count + 1, $last];
}
/**
* Allocate a single Global Column ID, application-unique.
*
* GCIDs are used to uniquely identify existing or proposed new columns,
* and are preserved after column modifications, to ensure change proposals have
* a clear target. This is the column equivalent of GRID.
*
* @return int
*/
public static function allocateColID()
{
return \DB::selectOne("SELECT nextval('global_column_id_seq') AS cid;")->cid;
}
/**
* Allocate a block of Global Column IDs, application-unique.
*
* @see Row::allocateColID()
*
* @return int[] first and last
*/
public static function allocateColIDs($count)
{
$last = \DB::selectOne("SELECT multi_nextval('global_column_id_seq', ?) AS last_id;", [$count])->last_id;
return [$last - $count + 1, $last];
}
}