Symfony3 trying to save into db with forms and twig

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.

Bartosz Zasada · Accepted Answer · 2016-07-22 13:22:35Z

2

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()) {
        // ...
    }
}

answered Jul 22, 2016 at 13:22

Bartosz Zasada

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2 Comments

2-D Over a year ago

Thank you for your answer, what do you mean by name attributes? I was trying to figure it out but I couldn't. I also changed the $product variable to the one you specified, but I still get the same error saying that it was expecting array or object and received string.

Bartosz Zasada Over a year ago

<input type="text" id="pName" placeholder="Product name"> - the attributes in this element are: type, id, and placeholder. A form field, such as input with type text, needs a name attribute, under which the value will be sent to the server with a POST request. For example, a value with this field: <input type="text" name="theFieldName"> will be later accessible in $request object like this: $request->request->get('theFieldName'), and will also be present in $_POST['theFieldName'].

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