how to manipulate with codeigniter - postgresql

Question

How I get my data array from view? and how to insert in my database?
my view, I try much code but still an error, sorry about my question and my bad English
<form role="form" action="<?php echo base_url().'potongan/validasi'?>" action="GET">
<div class="box-body">
<div class="box-header with-border">
<div class="row">
<div class="col-xs-3">
<label >NIM</label>
<input type="text" class="form-control" name="nim" id="nim" placeholder="NIM" value="<?php echo $nime ?>" readonly>
</div>
<div class="col-xs-3">
<label >Nama Mahasiswa</label>
<input type="text" class="form-control" name="namamhs" placeholder="Nama Mahasiswa" value="<?php echo $nim[0]->namamhs ?>" disabled>
</div>
<div class="col-xs-3">
<label >Jurusan</label>
<input type="text" class="form-control" name="jurusan" placeholder="Jurusan" value="<?php echo $nim[0]->jurusan ?>" disabled>
</div>
</div>
<br>
<div class="form-group">
<label >Kode Beasiswa</label>
<input type="text" class="form-control " name="kdbeasiswa" value="<?php echo $kdbeasiswa ?>" readonly>
</div>
<div class="form-group">
<label >Keterangan</label>
<input type="text" class="form-control " name="keterangan" value="<?php echo $keterangan ?>" readonly>
</div>
<div>
<table class="table table-bordered table-striped">
<tr>
<th></th>
<th>Kode</th>
<th>Deskripsi</th>
<th>Tahun Akademik</th>
<th>semester</th>
<th>Tagihan</th>
<th>Beasiswa</th>
<th>Terbayar</th>
<th>Potongan</th>
</tr>
<?php foreach ($nim as $n): ?>
<tr>
<td>
<input type="hidden" class="form-control " name="id[]" value="<?php echo $n->thakad.$n->smtakad.$n->kdkeu; ?>" maxlength="3" >
</td>
<td><input type="hidden" class="form-control " name="kdkeu[]" value="<?php echo $n->kdkeu; ?>" maxlength="3" ><?php echo $n->kdkeu; ?></td>
<td><?php echo $n->deskeu; ?></td>
<td><input type="hidden" class="form-control " name="thakad[]" value="<?php echo $n->thakad; ?>" maxlength="3" ><?php echo $n->thakad; ?></td>
<td><input type="hidden" class="form-control " name="smtakad[]" value="<?php echo $n->smtakad; ?>" maxlength="3" ><?php echo $n->smtakad_view; ?></td>
<td><?php echo $n->tagihan; ?></td>
<td><?php echo $n->beasiswa; ?></td>
<td><?php echo $n->terbayar; ?></td>
<td>
<input type="text" class="form-control " name="prosentase_bea[]" value="<?php echo $n->potongan; ?>" maxlength="3">
</td>
</tr>
<?php endforeach ?>
</table>
</div>
</div>
<br>
<button class="btn btn-info" style="float: right;">submit</button>
</div>
<!-- /.box-body -->
</form>
my controller looks like this when I submit no data insert to the database and error like
Filename: C:/xampp/htdocs/tagihan/system/database/DB_query_builder.php
Line Number: 1498
$data = array();
$count = count($this->input->post('device'));
for($i=0; $i<$count; $i++) {
$data[] = array(
$thakad= $this->input->get('thakad'),
$smtakad= $this->input->get('smtakad'),
$kb = $this->input->get('kdbeasiswa'),
$kk = $this->input->get('kdkeu'),
$nim= $this->input->get('nim'),
$pb = $this->input->get('prosentase_bea'),
$status = 1,
$user = $this->session->userdata('username'),
$kt = $this->input->get('keterangan'),
$curentDate = date("Y-m-d"));
}
$this->db->insert_batch('keu_beasiswapermhs',$data);
redirect('http://localhost/tagihan/potongan');

Answer 1

Make a habit using the proper MVC
VIEW
<form action="URL" method="post">
</form>
CONTROLLER
$this->model->function_name();
redirect('URL');
MODEL
function function_name(){
$dataArr = array(
'field_name'=>$this->input->post('form_input_name'),
);
$this->db->INSERT('tbl_name',$dataArr);
}

Answer 2

You have fields like "namamhs" and "jurusan" that are not being put into the db.
You do not need for or while loops to insert data
You are not assigning what fields in your db each posted item goes to. Your controller has no idea where each value should be inserted. Do not use get, you should use post. Here is an example for your controller you can adapt to your form:
$data = [
'url' => $this->input->post('url'),
'name' => $this->input->post('name'),
'genre' => $this->input->post('genre'),
'counter' => $this->input->post('counter'),
'type' => $this->input->post('type')
];
where 'url' is a field in your db that you are putting $this->input->post('url') into.
Next you check the values:
$this->form_validation->set_rules('url', 'url', 'required|trim');
$this->form_validation->set_rules('name', 'Name', 'required|trim|callback_trims');
$this->form_validation->set_rules('genre', 'Genre', 'required|trim');
$this->form_validation->set_rules('counter', 'Counter', 'numeric');
$this->form_validation->set_rules('type', 'Type', 'required|min_length[3]');
If the values pass the validation, inserting is simple
if( $this->form_validation->run() == FALSE) {
echo validation_errors();
}else
{
$this->db->insert('music', $data);
}
You do not need batch insert. Just use insert

Answer 3

Your $data array is empty...always check if array not empty before insert batch...that cause error DB_query_builder.php Line Number: 1498