javascript - How to create a dynamic columns in a table using array values in codeigniter
Get the solution ↓↓↓public function addDynFields()
{
$checkedfileds=$_POST['CheckedFileds'];
$fields=implode(',',$checkedfileds);
$dynflds = strtolower($fields);
$dynclmns = 'add_to'.'_'.$dynflds;
if($fields == 'Title')
{
$this->db->query("ALTER TABLE `pm1asset_dynamic_fields` ADD ".$dynclmns." int(11) NOT NULL");
}
else
{
$this->db->query("ALTER TABLE `pm1asset_dynamic_fields` ADD ".$dynclmns." varchar(255) NOT NULL");
}
}
Answer
Solution:
I would not advise that because you also need to givetype, length, default value, null
etc. So, it will be a hectic task. Also, you'll have to check if the table already exists then use Alter table query.
If you must then also take thetype, length
value from the user
Possible Solution
In your function check if the table exists,
$query = "SELECT 1 from `Your_Table` LIMIT 1";
//returns false if the table does not exist.
$tableExists = $this->db->query($query);
IF NOT--
Use CREATE TABLE query--//if($tableExists === FALSE)
CREATE TABLE Your_Table(
Column_1 Column_1_Attributes,
Column_2 Column_2_Attributes,
.
.
)
Eg:
$query = "CREATE TABLE MyGuests (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
firstname VARCHAR(30) NOT NULL,
email VARCHAR(50)
)";
IF YES--
Use ALTER TABLE query--
ALTER TABLE Your_Table
MODIFY COLUMN new_column new_column_attributes;
Eg:
$query = "ALTER TABLE MyGuests
ADD lastname VARCHAR(30) NOT NULL";
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