prohibit adding existing value in a multidimensional array - php

Question

I have a table ingredient w/c consist of(ingredient_id,name). I can perfectly add an ingredient. But i want to add a condition that prohibit on adding existing ingredient. I have the code for that condition but i think it's wrong because the condition didn't work and i can still add an existing ingredient. please help me
HERE'S MY CODE:
VIEW:
<?php echo form_open('dashboard/uploadIngredients', 'class="form-horizontal" enctype="multipart/form-data"'); ?>
<div class="form-group">
<div class="col-sm-10">
<select required class="form-control" name="ingredient_category">
<option value="" selected disabled>Select Ingredient Category</option>
<option value="All">All</option>
<?php foreach($this->products_model->getCategory() as $row): ?>
<option value="<?php echo $row->category_id ?>"><?php echo $row->name; ?></option>
<?php endforeach; ?>
</select>
</div>
</div>
<div class="form-group">
<div class="col-sm-10">
<textarea class="form-control" name="ingredients" rows="5" placeholder="Ingredients (EX. onion, oil, pasta)" required></textarea>
</div>
</div>
<div class='form-group'>
<div class="col-sm-10">
<button class="btn btn-lg btn-positive" type="submit"><i class="glyphicon glyphicon-ok"></i> Save Ingredient</button>
</div>
</div>
<?php echo form_close(); ?>
CONTROLLER:
public function uploadIngredients()
{
foreach(explode(',', $this->input->post('ingredients')) as $key => $value) {
$saveData[] = array('ingredient_id' => null,
'name' => trim($value)
);
}
$ingredient_id = $this->products_model->saveIngredients($saveData);
redirect('dashboard/add_ingredients');
} }
MODEL:
public function saveIngredients($ingredient_id)
{
foreach($ingredient_id as $row => $value) {
$query=$this->db->where('ingredient_id', $value->ingredient_id);
if($query->num_rows > 0) {
echo '<div class="alert alert-error"><a class="close" data-dismiss="alert">×</a><strong>';
echo "Ingredient already taken";
echo '</strong></div>';
} else {
$this->db->insert('ingredient', $value);
$insert_id[] = $this->db->insert_id();
}
}
return $insert_id;
}

Answer 1

Change your model to
public function saveIngredients($ingredient_id)
{
foreach($ingredient_id as $row => $value) {
$query=$this->db->where('name', $value->name);
if($query->num_rows > 0) {
echo '<div class="alert alert-error"><a class="close" data-dismiss="alert">×</a><strong>';
echo "Ingredient already taken";
echo '</strong></div>';
} else {
$this->db->insert('ingredient', $value);
$insert_id[] = $this->db->insert_id();
}
}
return $insert_id;
}
That should do it. Just changing the $query line.
If that doesn't work, do a var_dump on $value just above that line, so you can see if you need to adjust the value you're targeting.

Answer 2

Use below code.
CONTROLLER:
public function uploadIngredients()
{
foreach(explode(',', $this->input->post('ingredients')) as $key => $value) {
$result = this->products_model->saveIngredients(trim($value));
if($result['status'])
{
$ids[]=$result['id'];
}else{
echo '<div class="alert alert-error"><a class="close" data-dismiss="alert">×</a><strong>';
echo "Ingredient already taken";
echo '</strong></div>';
}
}
redirect('dashboard/add_ingredients');
} }
MODEL:
public function saveIngredients($data)
{
$query=$this->db->where('name', $data);
if($query->num_rows > 0) {
return ['status'=>FALSE];
} else {
$this->db->insert('ingredient', array('name'=>$data));
$insert_id = $this->db->insert_id();
return ['status'=>TRUE,'id'=>$insert_id];
}
}