Creating link option in form and modifying it's url in form alter hook

Ernesto Alfredo

7/23/23, 4:19 PM

I'm searching to modify a node add form, so far i added a personal field "link" to display as a button to add another node type if the user wants to, that link has this code in hook_form_alter, im catching a value from another select earlier and passing that value to my route::

    $selected_advertiser = isset($form_state->getUserInput()['field_advertiser'])? $form_state->getUserInput()['field_advertiser'] : "0";
    $url = Url::fromRoute('product.product_form', ['advertiser' => $selected_advertiser]);
    $form['product_modal'] = [
        '#type' => 'link',
        '#name' => 'product_modal',
        '#title' => t('New Product'),
        '#url' => $url,
        '#attributes' => [
            'class' => [
                'use-ajax',
                'button',
            ],
            'data-dialog-type' => 'modal',
            'data-dialog-options' => '{"width":800, "height": 500}',
            'disable-refocus' => true,
            'style'=>'display: inline-block',
        ],
        "#weight" => 5,
    ];

routing.yml

  product.product_form:
  path: /product/product_form/{advertiser}
  defaults:
    _controller: '\Drupal\my_module\Controller\mycontrollerController::openModalProduct'
    _title: 'Popup for product form'
  requirements:
    _permission: 'administer site configuration'

so the first time this runs it sets the $selected_advertiser to "0" but next time is setting properly to whatever id i have selected from previous select option, but the route to the button is still matched as default value "0", my debugger is showing the correct new route with the correct new id but the form button is not, im guessing this has something to do with unstated changes in form or something like that?

0 + 0

forms

hooks

ajax

Hodba Khalaf

7/24/23, 12:46 PM

Why not create a new selected_advertiser field and hide, then use the value of the field to modify the $URL?

Ernesto Alfredo

7/29/23, 8:09 PM

@HodbaKhalaf i think i understand the idea, i think looks good, let me try that

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Creating link option in form and modifying it's url in form alter hook

TH: การสร้างตัวเลือกลิงค์ในแบบฟอร์มและแก้ไข url ในแบบฟอร์ม alter hook

RO: Crearea opțiunii de link în formular și modificarea url-ului acesteia în form alter hook

RU: Создание опции ссылки в форме и изменение ее URL-адреса в форме alter hook

VI: Tạo tùy chọn liên kết trong biểu mẫu và sửa đổi url của nó trong biểu mẫu thay đổi hook

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