Laravel / Eloquent - Column name as variable - php

Question

Eloquent offers a handy way of passing stuff to the database
$table_name = new TableName;
$table_name->column_name = "some data";
$table_name->save();
I've got quite a lot of data from a form that needs to be validated, so I was wondering if it was possible to replace the column name with a variable, so I can put it in some loop, and get the names and data from arrays.
$table_name->$columns[$i] = $data[$i];
(though I suppose not written in that way)
Update
In the end I've gone with the following:
$table_name = new TableName;
$nameArray=[
1 => 'form-name-1',
...
];
$columnArray=[
1 => 'column_name_1',
...
];
for($i=1;$i<=count($nameArray);$i++){
if(logic logic logic) $table_name->{$columnArray[$i]} = $_POST[$nameArray[$i]];
else $table_name->{$columnArray[$i]} = NULL;
}
$table_name->save();

Answer 1

You can do one these:
1) Create with values
$table_name = new TableName([
"column_name" => "column_value"
]);
2) Fill
$table_name = new TableName();
$table_name->fill([
"column_name" => "column_value"
]);
3) The way you suggested originally:
$valuesMap = [
"column_name" => "column_value"
];
$table_name = new TableName();
foreach ($valuesMap as $column => $value) {
$table_name->{$column} = $value; //The {} are optional in this case
}
Note that to do 1 or 2 all fields you put in the array must be fillable and not guarded.

Answer 2

You can use it like an associative array:
$table_name['column_name']
$column_name = 'column_name';
$table_name[$column_name];
Or you can loop their attributes
foreach($table_name->getAttributes() as $value => $key){
echo "The attr ".$key." has this value: ".$value;
}