Symfony3 trying to save into db with forms and twig - php

Question

It is my first attempt to store product's information into mysql. I apologize in advance if the code is not in the best form, Im still learning. This is my registration.html.twig
{% extends 'base.html.twig' %}
{% block stylesheets %}
<link href="{{ asset('bundles/framework/css/myStyle.css') }}" rel="stylesheet" />
{% endblock %}
{% block title %}Create your product {% endblock %}
{% block body %}
<div id="container">
<h1 id="header">Create your product and store it in the database!</h1>
</div>
<form method="POST" id="registrationForm">
<input type="text" id="pName" placeholder="Product name">
<input type="text" id="pPrice" placeholder="Product price"> <br>
<textarea id="pDescription" placeholder="Product description"></textarea>
</form>
<input type="submit" value="Submit" >
{% endblock %}
I also have Product entity class with setters&getters, not going to include it here because of amount of code.
This is my ProductForm :
class ProductForm extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('pName')
->add('pPrice')
->add('pDescription')
;
}
}
and here is part of my controller for the /insert page:
public function createAction()
{
$product = 'AppBundle\Entity\Product';
$form = $this->createForm(ProductForm::class, $product);
if($form->isValid())
{
$em= $this->getDoctrine()->getManager();
//Save into database code should go here...
}
}
For starters, it complains that it Expected argument of type "object, array or empty", "string" given which I guess comes from the controller where I try to pass $product variable with specified path to the entity class. In the documentation this part is very confusing. It says $product = ... leaving me without anything, I managed to understand that this is a path to entity class which should be passed to createForm method, but as mentioned before it complains that it is string, not array. Could someone review my code and give a feedback on what is wrong? Im really lost at the moment and not sure what to do next or how to solve this. Thank you in advance.

Answer 1

Your form fields don't have name attributes set, which means that no data will be posted from it.
In the controller, $product should be an instance of AppBundle\Entity\Product, not just a class name:
$product = new \AppBundle\Entity\Product();
The form will not automatically retrieve the data from HTTP request (which are not there because of point 1), you must handle the request manually:
// inject the request here
public function createAction(\Symfony\Component\HttpFoundation\Request $request) {
// ...
$form->handleRequest($request);
if ($form->isValid()) {
// ...
}
}