{"id":11697,"date":"2022-09-28T07:20:53","date_gmt":"2022-09-28T01:50:53","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-symfony-4-manytomany-association-with-attribute-custom-form-to-insert-attribute-value-how-do-i\/"},"modified":"2022-09-28T07:20:53","modified_gmt":"2022-09-28T01:50:53","slug":"solved-symfony-4-manytomany-association-with-attribute-custom-form-to-insert-attribute-value-how-do-i","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-symfony-4-manytomany-association-with-attribute-custom-form-to-insert-attribute-value-how-do-i\/","title":{"rendered":"[Solved] Symfony 4. ManyToMany association with attribute. Custom form to insert attribute value, how do I?"},"content":{"rendered":"

[ad_1]
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It seems I did find a way, indeed it is pretty straightforward Synfony 4 code.
\nHope it could be useful to somebody.<\/p>\n

(note: I used php bin\/console make:entity\/crud\/form<\/code> to write the needed scripts. Below how I needed to modify the code I got from make<\/code>) <\/p>\n

So, say I have Alpha and Beta entities.
\nI wish to have a form to create a new Alpha object, to associate to it one or more Beta objects, and to fill in a Cost value for each Alpha-Beta association. I want a edit form too.<\/p>\n

First I create a new AlphaBeta entity, whose fields are:<\/p>\n

 \/**\n * @ORM\\ManyToOne(targetEntity=\"App\\Entity\\Alpha\", inversedBy=\"alphabetas\", cascade={\"persist\"})\n * @ORM\\JoinColumn(nullable=false)\n *\/\nprivate $alpha;\n\n\/**\n * @ORM\\ManyToOne(targetEntity=\"App\\Entity\\Beta\", inversedBy=\"betaalphas\", cascade={\"persist\"})\n * @ORM\\JoinColumn(nullable=false)\n *\/\nprivate $beta;\n\n \/**\n * @ORM\\Column(type=\"string\", length=255, nullable=true)\n *\/\nprivate $cost;\n<\/code><\/pre>\n
Within class Alpha<\/code>, I need<\/p>\n
    \/**\n * @ORM\\OneToMany(targetEntity=\"App\\Entity\\AlphaBeta\", mappedBy=\"alpha\", orphanRemoval=true, cascade={\"persist\"})\n *\/\nprivate $alphabetas;\n<\/code><\/pre>\n
with usual ‘getAlphaBeta<\/code>, addAlphaBeta<\/code> and removeAlphaBeta<\/code> methods. (similarly for Beta<\/code>)<\/p>\n
I create usual CRUD controllers for the new AlphaBeta<\/code> entity. To have an AlphaBeta Form which could be used as a subform too, I define<\/p>\n
class `AlphaBetaEmbeddedForm`  extends AbstractType {\n\n      public function buildForm(FormBuilderInterface $builder, array $options)\n    {\n    $builder ->add('Beta', EntityType::class, array(\n                    'class' => Beta::class,\n                    'multiple' => false,\n                    'expanded' => true,\n                    'choice_label' => 'betaTitle' ))\n             ->add('cost', TextType::class);\n   if(empty($options['remove_alpha_field'])) {\n   $builder->add('Alpha', EntityType::class, array(\n                   'class' => Alpha::class,\n                   'multiple' => false,\n                   'expanded' => true,\n                   'choice_label' => 'alphaTitle'\n    ));}}\n\npublic function configureOptions(OptionsResolver $resolver)\n{\n    $resolver->setDefaults([\n        'data_class' => AlphaBeta::class,\n        'remove_alpha_field' => false,\n    ]);\n}}\n<\/code><\/pre>\n
remove_alpha_field<\/code> is the trick that let me use the form above as a subform within a form to create an Alpha<\/code> object:<\/p>\n
class AlphaType extends AbstractType {\n\n     public function buildForm(FormBuilderInterface $builder, array $options) {\n\n     $builder\n        ->add('alphaTitle')       \n        ->add('AlphaBetas', CollectionType::class, array(\n           'entry_type'  => AlphaBetaEmbeddedForm ::class,\n           'entry_options' => ['label' => true, 'remove_alpha_field' => true],\n           'allow_add' => true,\n           'label' => 'Betas',\n           'by_reference' => false\n    ));}\n<\/code><\/pre>\n
To render the subforms within the main form, I need some JS, as suggested here<\/a>, to be inserted within the new.html.twig<\/code> and edit.html.twig<\/code> templates for Alpha<\/code>:<\/p>\n
{% block javascripts %} <script type=\"text\/javascript\"> \n     jQuery(document).ready(function () {\n        $(\"#add-another-collection-widget\").click(function(e){ \n          var list = jQuery(jQuery(this).attr('data-list-selector'));\n          var counter = list.data('widget-counter') | list.children().length;\n          var newWidget = list.attr('data-prototype');\n          newWidget  = newWidget.replace(\/__name__\/g, counter); \n          counter++;\n          list.data('widget-counter', counter);\n          var newElem = jQuery(list.attr('data-widget-tags')).html(newWidget);\n          newElem.appendTo(list);\n    });});<\/script>{% endblock %}\n<\/code><\/pre>\n
To apply the latter, it seems you need to write each single row in the main form template _form.html.twig<\/code>:<\/p>\n
{{ form_start(form) }}\n<div class=\"my-custom-class-for-errors\">\n    {{ form_errors(form) }}\n<\/div>\n     <div id=\"alphaTitle\">\n        {{ form_row(form.alphaTitle) }}\n    <\/div>\n\n{% if  form.AlphaBetas %} \n     <b>Betas<\/b> <\/br><\/br>\n {% for Beta in form.AlphaBetas %}\n   {% for BetaField in Beta %}\n     {{ form_row(BetaField) }}\n   {% endfor %} \n       {% endfor %}\n {% endif %}\n\n<div id=\"AlphaBeta-fields-list\"\n    data-prototype=\"{{ form_widget(form.AlphaBetas.vars.prototype)|e }}\"\n    data-widget-tags=\"{{ '<p><\/p>' |e }}\"\n    data-widget-counter=\"{{ form.children|length }}\">\n{% for AlphaBetaField in form.AlphaBetas.vars.prototype.children %}\n{{ form_row(AlphaBetaField) }}\n{% endfor %}\n<\/div> \n\n<button type=\"button\" id=\"add-another-collection-widget\" data-list-selector=\"#AlphaBeta-fields-list\">Insert Beta<\/button>\n<\/br>\n<button class=\"btn\">{{ button_label|default('Save') }}<\/button>\n{{ form_end(form) }}\n<\/code><\/pre>\n
That’s all.<\/p>\n
Note: within the main form to edit an Alpha object, I would like to insert a delete buttons for each Beta associated object. As much as I can see, it is not possible, since it would mean to insert a html form within an html form. Since I may delete a AlphaBeta association by the corresponding AlphaBeta delete action, it is not a big deal. <\/p>\n
If you see how I can improve my code, you are welcome to advise me. <\/p>\n<\/p><\/div>\n
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            1<\/span> <\/p><\/div>\n<\/div>\n
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solved Symfony 4. ManyToMany association with attribute. Custom form to insert attribute value, how do I? <\/p>\n","protected":false},"excerpt":{"rendered":"
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