How to add a repeated form in a loop symfony2 for the same entity

问题

I want to build a questionnaire form. When I use the following code, I can only see the last question of my table that contains 18 questions (and the answer field).

I can't use a collection because my questionnaire is going to be more complicated, some questions with multiple answers, some others in true/false, etc. I simplified the code to fix this problem first.

    //Get question array collection
    $questions = $questionnaire->getQuestions();
    $formBuilderQuestionnaire = $this->createFormBuilder();

    //Make a loop for each question
    foreach($questions as $question)
    {
        //Create an answer form
        $answer = new Answers($question, $evaluation);
        $formBuilder = $this->createFormBuilder($answer);

        //Add a answer text box with the question as label
        $formBuilder->add('answerText', 'textarea',  array(
        'required' => false,
        'label' => $question->getQuestionText()
        ));

        $formBuilderQuestionnaire->add($formBuilder);

    }

    //Create the form
    $form = $formBuilderQuestionnaire->getForm();
    return $form->createView();
}

回答1:

Problem solved, thanks to a friend. I had to replace the createformBuilder

   public function generateForm($questionnaire, $evaluation)
{

    //Get question array collection
    $questions = $questionnaire->getQuestions();
    $formBuilderQuestionnaire = $this->createFormBuilder();
    $i = 0;


    //Make a loop for each question
    foreach($questions as $question)
    {

        //Create an answer form
        $answer = new Answers($question, $evaluation);
        $formBuilder = $this->get('form.factory')->createNamedBuilder($i, 'form', $answer);


        //Add a answer text box with the question as label
        $formBuilder->add('answerText' , 'textarea',  array(
            'required' => false,
            'label' => $question->getQuestionText() 
        ));

        $formBuilderQuestionnaire->add($formBuilder);

        $i++;

    }

    //Create the form
    $form = $formBuilderQuestionnaire->getForm();
    return $form; 
  }

回答2:

There is another possibility: Add an iterator to your form elements:

//controller
$idx = 1;
foreach ($list as $elem) {
  $formBuilder->add('checkbox'.$idx,CheckboxType::class, ['label' => $elem->getName() ]);
  $idx++;
}

Then it will iterate automatically in the twig:

//output.html.twig
{{ form_start(form) }}
{{ form_widget(form) }}
{{ form_end(form) }}

When you define your own form theme you are able to address the form variables like:

{% form_theme form _self %}
{% block date_widget %}
  {{ form.vars.value }} 
{% endblock %}

来源：https://stackoverflow.com/questions/16440145/how-to-add-a-repeated-form-in-a-loop-symfony2-for-the-same-entity

标签

php

forms

loops

symfony

formbuilder