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<?php
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namespace App\Tables;
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use App\Models\Revision;
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use App\Models\Row;
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use App\Models\Table;
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use Illuminate\Pagination\Paginator;
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use Illuminate\Queue\SerializesModels;
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use Illuminate\Support\Collection;
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use MightyPork\Exceptions\NotApplicableException;
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use MightyPork\Exceptions\NotExistException;
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use ReflectionClass;
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/**
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* Object representing a set of table modifications
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*/
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class Changeset
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{
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use SerializesModels;
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const object_excluded_properties = [
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'revision',
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'table',
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'note',
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];
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/**
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* @var Revision - base revision this changeset belongs to
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*/
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public $revision;
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/**
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* @var Table - table this changeset belongs to
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*/
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public $table;
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/**
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* @var string - user's note attached to this changeset (future proposal)
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*/
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public $note = '';
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/**
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* Rows whose content changed, identified by _id.
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* Only changed values are to be filled. Columns are identified by GCIDs
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*
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* Key'd by _id
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*
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* @var array|null - [_id -> [_id:…, cid:…, cid:…], …]
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*/
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public $rowUpdates = [];
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/**
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* New rows in the full Row::data format, including GRIDs.
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* Values are identified by GCIDs from previously defined, or new columns.
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*
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* @var array|null - [_id -> [_id:…, cid:…, cid:…], …]
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*/
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public $newRows = [];
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/**
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* Rows to be removed
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*
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* @var int[]|null - GRIDs
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*/
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public $removedRows = [];
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/**
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* Values changed in column specifications, such as name, title, etc.
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* This does not affect the table rows in any way.
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*
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* Key'd by id
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*
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* @var array[] - column specification objects, with GCIDs, key'd by CID
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*/
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public $columnUpdates = [];
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/**
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* New columns in the full format, including GCIDs
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*
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* @var array|null - [id -> [id:…, …], …]
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*/
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public $newColumns = [];
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/**
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* When reordering columns, here is the column IDs array
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* in the new order. Columns meanwhile removed from the table
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* or added to it are to be ignored or appended at the end.
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*
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* This shall not be filled if merely editing or adding columns,
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* unless the order is explicitly adjusted by the user.
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*
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* @var string[]|null - GCIDs
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*/
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public $columnOrder = [];
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/**
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* Columns to be removed
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*
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* The data associated to those columns may or may not be removed from the Rows.
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* It does not matter, other than in regard to the table size.
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*
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* @var int[]|null - GCIDs
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*/
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public $removedColumns = [];
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private function walkProps()
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{
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$properties = (new ReflectionClass($this))->getProperties();
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foreach ($properties as $property) {
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if (in_array($property->name, self::object_excluded_properties)) {
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continue;
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}
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yield $property->name;
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}
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}
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/**
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* Reconstruct from a object, such as one found in Proposal.
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* Note that the fromProposal() method should be used when the
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* proposal is available, as it populates additional fields.
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*
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* @param \stdClass $changes
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* @return Changeset
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*/
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public static function fromObject($changes)
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{
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$changeset = new Changeset();
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foreach ($changeset->walkProps() as $prop) {
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if (isset($changes->$prop)) {
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$changeset->$prop = $changes->$prop;
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}
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}
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return $changeset;
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}
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/**
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* Serialize to an object format that may be stored in a Proposal.
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*
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* @return \stdClass
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*/
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public function toObject()
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{
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$object = new \stdClass();
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foreach ($this->walkProps() as $prop) {
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$object->$prop = $this->$prop;
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}
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return $object;
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}
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/**
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* Check if there is any change in this changeset
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*
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* @return bool - any found
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*/
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public function hasAnyChanges()
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{
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foreach ($this->walkProps() as $prop) {
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if (!empty($this->$prop)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Decorate / transform a single row for the editor view
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*
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* @param object|\DecoratedRow $row - row, must be key'd by column ids
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* @param bool $decorate - to add extra underscored info for the editor
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* @return \DecoratedRow|object|null - null if not decorating and the row was removed
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*/
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public function transformRow($row, $decorate)
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{
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if ($row instanceof Row) $row = (object)$row->getAttributes();
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if ($decorate) {
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$row->_remove = false;
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$row->_changed = [];
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$row->_orig = [];
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}
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if ($this->isNewRow($row->_id)) {
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if ($decorate) {
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$row->_new = true;
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$row->_orig = array_diff((array)$row, []);
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// remove junk
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unset($row->_orig['_id']);
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unset($row->_orig['_new']);
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unset($row->_orig['_remove']);
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unset($row->_orig['_changed']);
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unset($row->_orig['_orig']);
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}
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return $row;
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}
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// Removed rows - return as null
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if (in_array($row->_id, $this->removedRows)) {
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if ($decorate) {
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$row->_remove = true;
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} else {
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return null;
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}
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}
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// if marked for removal, hide changes
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if (!$row->_remove) {
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// Changed values
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if (isset($this->rowUpdates[$row->_id])) {
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$newVals = $this->rowUpdates[$row->_id];
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if ($decorate) {
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$row->_changed = array_keys($newVals);
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$row->_orig = array_only((array)$row, $row->_changed);
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}
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$row = (object)array_merge((array)$row, $newVals);
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}
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}
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// Drop deleted columns
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if (!$decorate) {
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foreach ($this->removedColumns as $colId) {
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unset($row->$colId);
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}
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}
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unset($row->_row_pivot);
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return $row;
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}
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/**
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* Decorate / transform columns (loaded from the source revision)
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*
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* @return Column[]
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*/
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public function fetchAndTransformColumns()
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{
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/** @var Column[] - loaded and transformed columns, cached from previous call to transformColumns() */
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static $cachedColumns = [];
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if ($cachedColumns) return $cachedColumns;
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$columns = Column::columnsFromJson($this->revision->columns);
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// Modify columns
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foreach ($columns as $column) {
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if (isset($this->columnUpdates[$column->id])) {
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$column->modifyByChangeset($this->columnUpdates[$column->id]);
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}
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if (in_array($column->id, $this->removedColumns)) {
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$column->markForRemoval();
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}
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}
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// Append new columns
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foreach ($this->newColumns as $newColumn) {
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$columns[] = $c = new Column($newColumn);
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$c->markAsNew();
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}
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// Reorder
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$colsById = collect($columns)->keyBy('id')->all();
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$newOrder = [];
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foreach ($this->columnOrder as $id) {
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if (isset($colsById[$id])) {
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$newOrder[] = $colsById[$id];
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}
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}
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$leftover_keys = array_diff(array_keys($colsById), $this->columnOrder);
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foreach ($leftover_keys as $id) {
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$newOrder[] = $colsById[$id];
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}
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return $cachedColumns = $newOrder;
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}
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/**
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* @param string $id
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* @return Column
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*/
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public function fetchColumn(string $id)
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{
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if ($this->isNewColumn($id)) {
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$c = new Column($this->newColumns[$id]);
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$c->markAsNew();
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return $c;
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} else {
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$columns = collect($this->revision->columns)->keyBy('id');
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return new Column($columns[$id]);
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}
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}
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/**
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* @param string $id
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* @return Column
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*/
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public function fetchAndTransformColumn(string $id)
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{
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$column = $this->fetchColumn($id);
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if (isset($this->columnUpdates[$column->id])) {
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$column->modifyByChangeset($this->columnUpdates[$column->id]);
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}
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if (in_array($column->id, $this->removedColumns)) {
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$column->markForRemoval();
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}
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return $column;
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}
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public function rowRemove(int $id)
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{
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if ($this->isNewRow($id)) {
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unset($this->newRows[$id]);
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}
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else {
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$this->removedRows[] = $id;
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}
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}
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public function rowRestore(int $id)
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{
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$this->removedRows = array_diff($this->removedRows, [$id]);
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}
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public function isNewRow(int $id)
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{
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return isset($this->newRows[$id]);
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}
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public function isNewColumn(string $id)
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{
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return isset($this->newColumns[$id]);
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}
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public function fetchAndTransformRow(int $id)
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{
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$r = $this->fetchRow($id);
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$transformed = $this->transformRow($r, true);
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return $transformed;
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}
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public function fetchColumns()
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{
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return Column::columnsFromJson($this->revision->columns);
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}
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/**
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* Fetch an existing row from DB, or a new row.
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*
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* @param $id
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* @return object
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*/
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public function fetchRow(int $id)
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{
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if ($this->isNewRow($id)) {
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$nr = (object)$this->newRows[$id];
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$nr->_new = true;
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return $nr;
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}
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$r = $this->revision->rowsData($this->fetchColumns(), true, false)
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->whereRaw("data->>'_id' = ?", $id)->first();
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if (!$r) throw new NotExistException("No such row _id = $id in this revision.");
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// remove junk
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unset($r->pivot_revision_id);
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unset($r->pivot_row_id);
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return (object)$r->getAttributes();
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}
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/**
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* Apply a row update, adding the row to the list of changes, or removing it
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* if all differences were undone.
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*
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* @param array|object $newVals - values of the new row
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* @return object - updated column
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*/
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public function rowUpdate($newVals)
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{
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$newVals = (object)$newVals;
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$_id = $newVals->_id;
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$origRow = $this->fetchRow($_id);
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/** @var Column[]|Collection $cols */
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$cols = collect($this->fetchAndTransformColumns())->keyBy('id');
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$updateObj = [];
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foreach ($newVals as $colId => $value) {
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if (starts_with($colId, '_')) continue; // internals
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$col = $cols[$colId];
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$value = $col->cast($value);
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$origValue = $col->cast(isset($origRow->$colId) ? $origRow->$colId : null);
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if ($value !== $origValue) {
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$updateObj[$colId] = $value;
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}
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}
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if ($this->isNewRow($_id)) {
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$this->newRows[$_id] = array_merge($this->newRows[$_id], $updateObj);
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|
|
}
|
|
|
|
else {
|
|
|
|
if (!empty($updateObj)) {
|
|
|
|
$this->rowUpdates[$_id] = $updateObj;
|
|
|
|
} else {
|
|
|
|
// remove possible old update record for this row, if nothing changes now
|
|
|
|
unset($this->rowUpdates[$_id]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return $this->fetchAndTransformRow($_id);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* @param $newVals
|
|
|
|
* @return Column
|
|
|
|
*/
|
|
|
|
public function columnUpdate($newVals)
|
|
|
|
{
|
|
|
|
$id = $newVals->id;
|
|
|
|
$col = $this->fetchColumn($id);
|
|
|
|
|
|
|
|
$updateObj = [];
|
|
|
|
foreach ($newVals as $field => $value) {
|
|
|
|
if (starts_with($field, '_')) continue; // internals
|
|
|
|
|
|
|
|
if ($value !== $col->$field) {
|
|
|
|
$updateObj[$field] = $value;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ($this->isNewColumn($id)) {
|
|
|
|
$this->newColumns[$id] = array_merge($this->newColumns[$id], $updateObj);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if (!empty($updateObj)) {
|
|
|
|
$this->columnUpdates[$id] = $updateObj;
|
|
|
|
} else {
|
|
|
|
// remove possible old update record for this row, if nothing changes now
|
|
|
|
unset($this->columnUpdates[$id]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return $this->fetchAndTransformColumn($id);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function columnRemove(string $id)
|
|
|
|
{
|
|
|
|
if ($this->isNewColumn($id)) {
|
|
|
|
unset($this->newColumns[$id]);
|
|
|
|
// remove it from order
|
|
|
|
$this->columnOrder = array_diff($this->columnOrder, [$id]);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
$this->removedColumns[] = $id;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
public function columnRestore(string $id)
|
|
|
|
{
|
|
|
|
$this->removedColumns = array_diff($this->removedColumns, [$id]);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get a page of added rows for display in the editor
|
|
|
|
*
|
|
|
|
* @param int $perPage
|
|
|
|
* @return \Illuminate\Pagination\LengthAwarePaginator|Collection|array
|
|
|
|
*/
|
|
|
|
public function getAddedRows($perPage = 25)
|
|
|
|
{
|
|
|
|
return collection_paginate($this->newRows, $perPage);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* @param Column[] $columns
|
|
|
|
* @param array $csvArray
|
|
|
|
* @param bool $forTableInsert
|
|
|
|
* @return \array[][]|Collection
|
|
|
|
*/
|
|
|
|
public static function csvToRowsArray($columns, $csvArray, $forTableInsert)
|
|
|
|
{
|
|
|
|
/** @var Collection|array[][] $rows */
|
|
|
|
$rows = collect($csvArray)->map(function ($row) use ($columns, $forTableInsert) {
|
|
|
|
if (count($row) == 0 || count($row) == 1 && $row[0] == '') return null; // discard empty lines
|
|
|
|
if (count($row) != count($columns)) {
|
|
|
|
throw new NotApplicableException("All rows must have " . count($columns) . " fields.");
|
|
|
|
}
|
|
|
|
|
|
|
|
$data = [];
|
|
|
|
|
|
|
|
foreach ($row as $i => $val) {
|
|
|
|
$col = $columns[$i];
|
|
|
|
|
|
|
|
if (strlen($val) > 1000) {
|
|
|
|
// try to stop people inserting unstructured crap / malformed CSV
|
|
|
|
throw new NotApplicableException("Value for column {$col->name} too long.");
|
|
|
|
}
|
|
|
|
$data[$col->id] = $col->cast($val);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ($forTableInsert) {
|
|
|
|
return ['data' => $data];
|
|
|
|
} else {
|
|
|
|
return $data;
|
|
|
|
}
|
|
|
|
})->filter();
|
|
|
|
|
|
|
|
|
|
|
|
$rowNumerator = new RowNumerator(count($csvArray));
|
|
|
|
|
|
|
|
if ($forTableInsert) {
|
|
|
|
return $rows->map(function ($row) use (&$rowNumerator) {
|
|
|
|
$row['data']['_id'] = $rowNumerator->next();
|
|
|
|
return $row;
|
|
|
|
});
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
return $rows->map(function ($row) use (&$rowNumerator) {
|
|
|
|
$row['_id'] = $rowNumerator->next();
|
|
|
|
return $row;
|
|
|
|
});
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
public function addBlankRows(int $count)
|
|
|
|
{
|
|
|
|
$numerator = new RowNumerator($count);
|
|
|
|
|
|
|
|
$columns = $this->fetchAndTransformColumns();
|
|
|
|
$template = [];
|
|
|
|
foreach ($columns as $column) {
|
|
|
|
$template[$column->id] = $column->cast(null);
|
|
|
|
}
|
|
|
|
|
|
|
|
foreach ($numerator->generate() as $_id) {
|
|
|
|
$row = $template;
|
|
|
|
$row['_id'] = $_id;
|
|
|
|
$this->newRows[$_id] = $row;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
public function addFilledRows($csvArray)
|
|
|
|
{
|
|
|
|
/** @var Column[] $columns */
|
|
|
|
$columns = array_values($this->fetchAndTransformColumns());
|
|
|
|
|
|
|
|
$rows = self::csvToRowsArray($columns, $csvArray, false)
|
|
|
|
->keyBy('_id');
|
|
|
|
|
|
|
|
// using '+' to avoid renumbering
|
|
|
|
$this->newRows = $this->newRows + $rows->toArray();
|
|
|
|
}
|
|
|
|
|
|
|
|
public function addBlankCol()
|
|
|
|
{
|
|
|
|
$cid = (new ColumnNumerator(1))->next();
|
|
|
|
|
|
|
|
$allCols = $this->fetchAndTransformColumns();
|
|
|
|
$num = count($allCols) + 1;
|
|
|
|
|
|
|
|
$col = [
|
|
|
|
'name' => "col_{$num}",
|
|
|
|
'type' => "string",
|
|
|
|
'title' => "Column {$num}",
|
|
|
|
'id' => $cid,
|
|
|
|
];
|
|
|
|
|
|
|
|
$this->newColumns[$cid] = $col;
|
|
|
|
return $col;
|
|
|
|
}
|
|
|
|
|
|
|
|
public function setColOrder(array $order)
|
|
|
|
{
|
|
|
|
$allCols = $this->fetchAndTransformColumns();
|
|
|
|
$ids = collect($allCols)->pluck('id')->all();
|
|
|
|
$order = array_intersect($order, $ids);
|
|
|
|
$missing = array_diff($ids, $order);
|
|
|
|
|
|
|
|
$this->columnOrder = array_merge($order, $missing);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function removeEmptyNewRows()
|
|
|
|
{
|
|
|
|
$cols = $this->fetchColumns();
|
|
|
|
$emptyTpl = collect($cols)->keyBy('id')->map(function(Column $c) {
|
|
|
|
return $c->cast(null);
|
|
|
|
})->all();
|
|
|
|
|
|
|
|
$this->newRows = array_filter($this->newRows, function ($r) use ($emptyTpl) {
|
|
|
|
$emptyTpl['_id'] = $r['_id'];
|
|
|
|
return $emptyTpl != $r;
|
|
|
|
});
|
|
|
|
}
|
|
|
|
}
|