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It might not be perfect for your case and you will have to change a few things, but I'm sure it will help you on the way!

1. Create a dropdown field. Options you can leave empty (getCtaOptions in YourModel.php) or use a global static method like I did

```
cta:
		label: Link
		type: dropdown
		emptyOption: -- select  a page --
		options: \Aic\Globals\Helpers\FormHelper::getCtaOptions
```

2. Create your method (static method example)

```
<?php namespace Aic\Globals\Helpers;

use Cms\Classes\Theme;
use Cms\Classes\Page as CmsPage;
use Winter\Pages\Classes\Page as StaticPage;

use Aic\BlogX\Models\Blog as BlogX;
use Aic\BlogY\Models\Blog as BlogY;
use Aic\BlogZ\Models\Blog as BlogZ;

class FormHelper
{

public static function getCtaOptions($formWidget, $formField) {

$currentTheme = Theme::getActiveTheme();
        $pages = [];

foreach (CmsPage::listInTheme($currentTheme, false) as $page) {

// BlogX
            if ($page->baseFileName == 'blog-x/article') {
                foreach (BlogX::select('id', 'slug', 'title')->get() as $post) {
                    $key = 'cms:' . $page->baseFileName . ':slug:' . $post->slug . ':Aic\BlogX\Models\Blog:' . $post->id;
                    $pages[$key] = 'Blog X - ' . $post->title;
                }
            }
            
            // Same as BlogX for BlogY, BlogZ, ...
						// ... else if
						// ... else if
            
            // All CMS pages
            else {
                if (strpos($page->baseFileName, 'category') || strpos($page->baseFileName, 'tag')) {
                    // don't include pages that contain category or tag (in my case not needed)
                } else {
                    $key = 'cms:' . $page->baseFileName;
                    $pages[$key] = $page->title;
                }
            }

}

foreach (StaticPage::listInTheme($currentTheme, false) as $page) {
            $key = 'static:' . $page->baseFileName;
            $pages[$key] = $page->title;
        }

// sort the associative array alphabetically
        asort($pages);

// return the pages
        return $pages;

}

}
```

3. Your dropdown should now be populated with all your pages

4. Now you can render them in the frontend using twig

```
{% set cta = cta|split(':') %}
{% set type = cta[0] %}
{% set baseFileName = cta[1] %}
{% set property = cta[2] %}
{% set slug = cta[3] %}
{% set model = cta[4] %}
{% set id = cta[5] %}

{% if type == 'cms' %}
		{% if property == 'slug' %}

{% set translatedSlug = slug|translateSlug(model, id) %}
				{% if translatedSlug %}
						<a href='{{ baseFileName|page({ slug: translatedSlug }) }}'>Button label</a>
				{% endif %}

{% else %}
				<a href='{{ baseFileName|page }}'>Button label</a>
		{% endif %}
{% else %}
		<a href='{{ baseFileName|staticPage }}'>Button label</a>
{% endif %}
```

5. Finally, create the `|translateSlug` filter in your own Plugin.php. Note that for translations, your plugins need to implement the [translatableModel](https://github.com/wintercms/wn-blog-plugin/blob/d53520138bdf93ad39bd4877df6f62b9e8db3bb1/models/Post.php#L26)

```
public function registerMarkupTags()
{
		return [
				'filters' => [
						'translateSlug' => [$this, 'translateSlug']
				]
		];
}

public function translateSlug($slug, $model, $id)
{
		// cancel if Winter.Translate isn't installed
		if (!class_exists('Winter\Translate\Behaviors\TranslatableModel')) return $slug;

// return the translated slug. Returns an empty string of none was found.
		return $model::find($id)?->noFallbackLocale()->getAttributeTranslated('slug');
}
```

Special thanks to mjauvin and Romain 'Maz' B

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Backend Plugin Development CMS Twig Themes Deployment