Error : Unknown column 'Array' in 'field list' (codeigniter) - php

Question

I am getting this error
Unknown column 'Array' in 'field list'
When inserting checkbox list into database. When I do print_array I am getting this result :
Array
(
[0] => Array
(
[user_id] => 3
[project_id] => 10
[project_type] => 5
[project_list] => Array
(
[0] => 17
[1] => 18
)
)
)
The project_list value supposed to be inserted into a new row in the database.
my view : <input type="checkbox" value="<?php echo $project_list['id']; ?>" name="project_list[]"> which is populated from database.
my controller : $this->Project_module->createProject($_POST['project_list']);
my module
public function createProject($project_list){
if($project_list != null){
$data = array();
foreach($project_list as $project_list){
$data[] = array(
'user_id' => $this->getUserId(),
'project_id' => $this->getProjectId(),
'project_type' => $this->getProjectType(),
'project_list' => $this->getProjectList(),
);
}
$this->db->insert_batch('tblProject', $data);
if($this->db->affected_rows()){
return true;
} else {
return false;
}
}
}
EDIT
I was edited my foreach like this
foreach($project_list as $row){
$data = array(
'user_id' => $this->getUserId(),
'project_id' => $this->getProjectId(),
'project_type' => $this->getProjectType(),
'project_list' => $this->getProjectList(),
);
}
But I am still getting the same error.

Answer 1

Linundus, you need to name the array alias in the foreach something different. You have
foreach ($project_list as $project_list)
you need to have something like this:
foreach($project_list as $list)

Answer 2

You already pass the project_list So you don't want to get the list again. And you can store the just foreach string. In my side confusion with $data and $data[] So test with both and let me know....
Please check before with Table fields are correct
public function createProject($project_list){
if($project_list != null){
$data = array();
foreach($project_list as $row){
$data[] = array(
'user_id' => $this->getUserId(),
'project_id' => $this->getProjectId(),
'project_type' => $this->getProjectType(),
'project_list' => $row,
);
}
$this->db->insert_batch('tblProject', $data);
if($this->db->affected_rows()){
return true;
} else {
return false;
}
}
}

Answer 3

I have solved the problem and here is my coding that working fine now.
ERROR CAUSE
In the controller I have already set the checkbox setter like this :
$this->Project_module->setProjectList($this->input->post('project_list'));
and then call the createProject function after like this :
$this->Project_module->createProject($_POST['project_list']);
So I am getting error with the foreach inside my module.
SOLUTION
In controller
Remove this line
$this->Project_module->setProjectList($this->input->post('project_list'));
Simply hold all checkbox value in line
$this->Project_module->createProject($_POST['project_list']);
And in module
public function createProject($project_list){ // $_POST['project_list'] value pass in $project_list
if($project_list != null){
$data = array();
foreach($project_list as $row){ // Do foreach to insert every value in different rows in database
$data[] = array(
'user_id' => $this->getUserId(),
'project_id' => $this->getProjectId(),
'project_type' => $this->getProjectType(),
'project_list' => $row,
);
}
$this->db->insert_batch('tblProject', $data);
if($this->db->affected_rows()){
return true;
} else {
return false;
}
}
}

Answer 4

Array
(
[0] => Array
(
[user_id] => 3
[project_id] => 10
[project_type] => 5
[project_list] => Array
(
[0] => 17
[1] => 18
)
)
)
your value is in a nested key 0 so if you want to access project_id you'll have to use $array[0]['project_id']
a suggestion here would be to you check if values inside key 0 exist then do print