marwenmdoukhi/embed-collection-of-forms

Heavily commented project which includes a demo using collection of forms in symfony 3

Embed Collection Of Forms

Here's a link to a youtube video explaining this repository: https://youtu.be/nLy7dIQPCUI

Check the timestamps in the description

What this repository contains

• Configuring your symfony application to use SQLite instead of Mysql
• Creating Two entities: User and Exp (means Experience) which are related with the following relationship:
  • Exp.php
    • @ORM\ManyToOne(targetEntity="User", inversedBy="exp")
    • @ORM\JoinColumn(name="user_id", referencedColumnName="id")
  • User.php:
    • @ORM\OneToMany(targetEntity="Exp", mappedBy="user", cascade={"persist"})
    • Also don't forget to set the user in addExp function:

      public function addExp(\AppBundle\Entity\Exp $exp)
        {
            $this->exp[] = $exp;
            // setting the current user to the $exp,
            // adapt this to whatever you are trying to achieve
            $exp->setUser($this);
            return $this;
        }
      

• Next up, creating the forms from the command-line, pretty straight forward
  • ExpType.php:
    • Nothing special about this file
  • User.php:

    public function buildForm(FormBuilderInterface $builder, array $options)
       {
           $builder
               ->add('fullname')
               // this is the embeded form, the most important things are highlighted at the bottom
               ->add('exp', CollectionType::class, [
                   'entry_type' => ExpType::class,
                   'entry_options' => [
                       'label' => false
                   ],
                   'by_reference' => false,
                   // this allows the creation of new forms and the prototype too
                   'allow_add' => true,
                   // self explanatory, this one allows the form to be removed
                   'allow_delete' => true
               ])
               // just a regular save button to persist the changes
               ->add('save', SubmitType::class, [
                   'attr' => [
                       'class' => 'btn btn-success'
                   ]
               ])
           ;
       }
    

• Next, sending the form to the view and hadling the form submition
• Creating the JavaScript file which does most of the work:
  • Please look up the file in the repository, i cannot put the code here because it's about 80 or 90 lines long
• And finally persisting the data to the database