/**
* Drop the column
*
* @return result query
*/
public function dropColumn($column)
{
if (($table = Schema::getTable($this->getTable())) == null) {
return;
}
$c = $table->getColumn($column);
if ($c == null) {
return;
}
if ($c->getForeign()) {
$this->query(DB::SQL()::DROP_FOREIGN_KEY($this->getTable(), $c->getConstraint()));
}
if ($c->getPrimary()) {
$a = Schema::getTable($this->getTable());
foreach (Schema::getAllForeignKeyToColumn($this->getTable(), $c->getName()) as $k) {
$this->query(DB::SQL()::DROP_FOREIGN_KEY($this->getTable(), $k->getConstraint()));
self::$tables[$k->getTable()]->getColumn($k->getName())->resetForeign($k);
}
$this->query(DB::SQL()::MODIFY_COLUMN_RESET($this->getTable(), $c->getName()));
$this->query(DB::SQL()::DROP_PRIMARY_KEY($this->getTable()));
} else {
if ($c->hasIndex()) {
$this->query(DB::SQL()::DROP_INDEX_KEY($this->getTable(), $c->getIndex()));
}
}
if ($table->countColumns() == 1) {
unset(Schema::$tables[$this->getTable()]);
unset(self::$tables[$this->getTable()]);
return $this->drop();
} else {
Schema::$tables[$this->getTable()]->dropColumn($c->getName());
self::$tables[$this->getTable()]->dropColumn($c->getName());
return $this->query(DB::SQL()::DROP_COLUMN($this->getTable(), $c->getName()));
}
}
/**
* Add a SQL code for a JOIN|LEFT JOIN|RIGHT JOIN
*
* @param string $ACT type of JOIN
* @param string $table name of the secondary table
* @return object clone of $this
*/
public function _join(string $ACT, $table, $table_fun = null, $last = null, $on = true)
{
$t = $this;
if ($table_fun == null) {
$last = $table_fun;
}
$s_last = $last == null ? $t->builder->getLastJoinTable() : $last;
if (is_array($table)) {
foreach ($table as $tab_n => $tab_val) {
$t = $t->_join($ACT, is_int($tab_n) ? $tab_val : $tab_n, is_int($tab_n) ? null : $tab_val, $s_last);
}
return $t;
}
if (is_object($table_fun) && $table_fun instanceof Closure) {
$n = static::__construct($t->getBuilderTable());
$n->builder->prepare = $t->builder->prepare;
$n->builder->orOn = $t->builder->orOn;
$n->builder->andOn = $t->builder->andOn;
$n = $table_fun($n);
$t->builder->orOn = $n->builder->orOn;
$t->builder->andOn = $n->builder->andOn;
$t->builder->prepare = $n->builder->prepare;
if ($last == null) {
$last = $table;
}
} else {
list($table_g, $table_alias) = DB::SQL()::GET_ALIAS($table);
if (!Schema::hasTable($table_g)) {
throw new \Exception("Schema: {$table} doesn't exists");
}
}
if (empty($t->builder->orOn) && empty($t->builder->andOn)) {
list($table_g, $table_alias) = DB::SQL()::GET_ALIAS($table);
if ($on) {
list($s_last_g, $s_last_alias) = DB::SQL()::GET_ALIAS($s_last);
$k1 = Schema::getTable($table_g)->getForeignKeyTo($s_last_g);
$k2 = Schema::getTable($s_last_g)->getForeignKeyTo($table_g);
if ($k1 !== null) {
$k = $k1;
} else {
if ($k2 !== null) {
$k = $k2;
} else {
throw new \Exception("<br>\nCannot relate {$s_last} with {$table}: Error with foreign key\n<br>");
}
}
$c1 = ($k1 == null ? $table_alias : $s_last_alias) . "." . $k->getForeignColumn();
$c2 = ($k1 !== null ? $table_alias : $s_last_alias) . "." . $k->getName();
$t = $t->on($c1, '=', $c2);
$last = $k1 != null ? $table : $s_last;
} else {
$last = $table_g;
}
}
$t->builder->setLastJoinTable($last);
$t->builder->join[] = DB::SQL()::JOIN($ACT, $table, $t->SQL_ON_EXP());
$t->builder->andOn = [];
$t->builder->orOn = [];
return $t;
}