126 lines
3.4 KiB
PHP
Executable File
126 lines
3.4 KiB
PHP
Executable File
<?php
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class HistoryChange extends Rails\ActiveRecord\Base
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{
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protected $obj;
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public function options()
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{
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$master_class = $this->master_class();
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return $master_class::versioning()->get_versioned_attribute_options($this->column_name) ?: [];
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}
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public function master_class()
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{
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if ($this->table_name == 'pools_posts')
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$class_name = 'PoolPost';
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else
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$class_name = Rails::services()->get('inflector')->classify($this->table_name);
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return $class_name;
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}
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# Return true if this changes the value to the default value.
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public function changes_to_default()
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{
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if (!$this->has_default())
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return false;
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// $master_class = $this->master_class();
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// $column = $master_class::columns
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return $this->value == $this->get_default();
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}
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public function is_obsolete()
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{
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$latest_change = $this->latest();
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return $this->value != $latest_change->value;
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}
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public function has_default()
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{
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return isset($this->options()['default']);
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}
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public function get_default()
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{
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if ($this->has_default()) {
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return $this->options()['default'];
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}
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}
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# Return the default value for the field recorded by this change.
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public function default_history()
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{
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if (!$this->has_default())
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return null;
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return new History([
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'table_name' => $this->table_name,
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'remote_id' => $this->remote_id,
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'column_name' => $this->column_name,
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'value' => $this->get_default()
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]);
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}
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# Return the object this change modifies.
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public function obj()
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{
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if (!$this->obj) {
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$master_class = $this->master_class();
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$this->obj = $master_class::find($this->remote_id);
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}
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return $this->obj;
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}
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public function latest()
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{
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return self::order('id DESC')
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->where(
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"table_name = ? AND remote_id = ? AND column_name = ?",
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$this->table_name, $this->remote_id, $this->column_name
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)->first();
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}
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public function next()
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{
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return self::order('id ASC')
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->where(
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"table_name = ? AND remote_id = ? AND id > ? AND column_name = ?",
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$this->table_name, $this->remote_id, $this->id, $this->column_name
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)->first();
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}
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protected function set_previous()
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{
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$obj = self::order('id DESC')
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->where(
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"table_name = ? AND remote_id = ? AND id < ? AND column_name = ?",
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$this->table_name, $this->remote_id, $this->id, $this->column_name
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)->first();
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if ($obj) {
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$this->setAssociation('previous', $obj);
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$this->previous_id = $obj->id;
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$this->save();
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}
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}
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protected function associations()
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{
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return [
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'belongs_to' => [
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'history',
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'previous' => ['class_name' => 'HistoryChange', 'foreign_key' => 'previous_id']
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]
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];
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}
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protected function callbacks()
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{
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return [
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'after_create' => [
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'set_previous'
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]
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];
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}
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}
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