Issue #3311053 by mahtab_alam: Create the config form for setting up the sheet url

    _permission: 'access content'

  options:

    no_cache: 'TRUE'

live_data_gsheet.gsheet_url:

  path: /admin/config/gsheet-url

  defaults:

    _title: 'Setting for google Sheet'

    _form: \Drupal\live_data_gsheet\Form\GsheetSettingsForm

  requirements:

    _permission: 'administer site configuration'

<?php

namespace Drupal\live_data_gsheet\Form;

use Drupal\Core\Form\ConfigFormBase;

use Drupal\Core\Form\FormStateInterface;

/**

 * Configure Google Sheet url settings for this.

 */

class GsheetSettingsForm extends ConfigFormBase {

  /**

   * {@inheritdoc}

   */

  public function getFormId() {

    return 'gsheet_settings';

  }

  /**

   * {@inheritdoc}

   */

  protected function getEditableConfigNames() {

    return ['gsheet.settings'];

  }

  /**

   * {@inheritdoc}

   */

  public function buildForm(array $form, FormStateInterface $form_state) {

    $form['gsheet_url'] = [

      '#type' => 'textfield',

      '#title' => $this->t('Google Sheet URL'),

      '#default_value' => $this->config('gsheet.settings')->get('gsheet_url'),

    ];

    return parent::buildForm($form, $form_state);

  }

  /**

   * {@inheritdoc}

   */

  public function submitForm(array &$form, FormStateInterface $form_state) {

    $this->config('gsheet.settings')

      ->set('gsheet_url', $form_state->getValue('gsheet_url'))

      ->save();

    parent::submitForm($form, $form_state);

  }

}