How do I call the value from another backed page form and use it on a component in OctoberCms

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I'm making a seo plugin and I'm also using the rainlab blog plugin, I have created a tab with fields where I can input the metas that I want to include in the head tag of the page but I don't know how to call the value from the form fields that are in the blog area (rainlab plugin menu tab) while my seo component is at a cms page I have tried to use the {{this.page.variable}}'method but since the input form is at another backend page it doesn't work.

This is how my plugin.php looks like:

<?php namespace Stronganswer\Seo;
use Backend;
use Event;
use System\Classes\PluginBase;
use Cms\Classes\Page;
use Cms\Classes\Theme;
use System\Classes\PluginManager;
use System\Classes\SettingsManager;

class Plugin extends PluginBase
{

    /**
     * Returns information about this plugin.
     *
     * @return array
     */
public function pluginDetails()
{
    return [
        'name'        => 'seo',
        'description' => 'meta and og tag handler',
        'author'      => 'stronganswer',
        'icon'        => 'icon-leaf'
    ];
}

/**
 * Registers any front-end components implemented in this plugin.
 *
 * @return array
 */
public function registerComponents()
{

    return [
        'Stronganswer\Seo\Components\Seo' => 'seoHandler',
        'Stronganswer\Seo\Components\BlogPost' => 'SeoBlogPost',
        'Stronganswer\Seo\Components\StaticPage' => 'SeoStaticPage',
        'Stronganswer\Seo\Components\CmsPage' => 'SeoCmsPage',
    ];
}

public function registerSettings(){
    return [
        'settings' => [
            'label'       => 'SEO Settings',
            'description' => 'Seo Settings.',
            'icon'        => 'icon-bar-chart-o',
            'class'       => 'stronganswer\seo\Models\settings',
            'context'     => 'mysettings',
            'category'    =>  SettingsManager::CATEGORY_MYSETTINGS,
            'order'       => 1
        ]
    ];
}

/**
 * Registers any back-end permissions used by this plugin.
 *
 * @return array
 */
public function registerPermissions()
{

    return [
        'stronganswer.seo.some_permission' => [
            'tab' => 'seo',
            'label' => 'Some permission'
        ],
    ];
}

/**
 * Registers back-end navigation items for this plugin.
 *
 * @return array
 */
  /*  public function registerNavigation()
{

    return [
        'seo' => [
            'label'       => 'seo',
            'url'         => Backend::url('stronganswer/seo/controllers'),
            'icon'        => 'icon-leaf',
            'permissions' => ['stronganswer.seo.*'],
            'order'       => 500,
        ],
    ];
}*/

public function boot()
{
  Event::listen('backend.form.extendFields', function($widget)
    {
      if(PluginManager::instance()->hasPlugin('RainLab.Pages') && $widget->model instanceof \RainLab\Pages\Classes\Page)
      { //static pages fields
        $widget->addFields([
          'viewBag[seo_title]' =>[
            'label' => 'Meta Title',
            'tab'     => 'SEO',
            'type' => 'text'
          ],
          'viewBag[seo_description]' =>[
            'label' => 'Meta Description',
            'tab'     => 'SEO',
            'size'    => 'tiny',
            'type' => 'textarea'
          ],
          'viewBag[seo_keywords]' =>[
            'label' => 'Meta Keywords',
            'tab'     => 'SEO',
            'type' => 'text'
          ],
          'viewBag[robot_index]' => [
            'label'   => 'Robot Index',
            'type'    => 'dropdown',
            'tab'     => 'SEO',
            'options' => ["index"=>"index","noindex"=>"noindex"],
            'default' => 'index',
            'span'    => 'left'
          ],
          'viewBag[robot_follow]' => [
            'label'   => 'Robot Follow',
            'type'    => 'dropdown',
            'tab'     => 'SEO',
            'options' => ["follow"=>"follow","nofollow"=>"nofollow"],
            'default' => 'follow',
            'span'    => 'right'
                    ]
        ], 'primary');
      }

      if(PluginManager::instance()->hasPlugin('RainLab.Blog') && $widget->model instanceof \RainLab\Blog\Models\Post)
      {
        $widget->addFields([
          'blog_title' =>[
            'label' => 'Meta Title',
            'tab' => 'Blog Seo',
            'type' => 'text'
          ],
          'seo_description' =>[
            'label' => 'Meta Description',
            'tab'     => 'Blog Seo',
            'size'    => 'tiny',
            'type' => 'textarea'
          ],
          'seo_keywords' =>[
            'label' => 'Meta Keywords',
            'tab'     => 'Blog Seo',
            'type' => 'text'
          ],
          'robot_index' => [
            'label'   => 'Robot Index',
            'type'    => 'dropdown',
            'tab'     => 'Blog Seo',
            'options' =>  ["index"=>"index","noindex"=>"noindex"],
            'default' => 'index',
            'span'    => 'left'
          ],
          'canonical_url' => [
                        'label'   => 'Canonical URL',
                        'type'    => 'text',
                        'tab'     => 'SEO',
                        'span'    => 'left'
                    ],
          'robot_follow' => [
            'label'   => 'Robot Follow',
            'type'    => 'dropdown',
            'tab'     => 'Blog Seo',
            'options' => ["follow"=>"follow","nofollow"=>"nofollow"],
            'default' => 'follow',
            'span'    => 'right'
                    ]
        ], 'secondary');
      }

      if (!$widget->model instanceof \Cms\Classes\Page) return;
      //cms page fields
                $widget->addFields([
                  'settings[seo_title]' =>[
                    'label' => 'Meta Title',
                    'tab'     => 'SEO',
                    'type' => 'text'
                  ],
                  'settings[seo_description]' =>[
                    'label' => 'Meta Description',
                    'tab'     => 'SEO',
                    'size'    => 'tiny',
                    'type' => 'textarea'
                  ],
                  'settings[seo_keywords]' =>[
                    'label' => 'Meta Keywords',
                    'tab'     => 'SEO',
                    'type' => 'text'
                  ],
                  'settings[robot_index]' => [
                    'label'   => 'Robot Index',
                    'type'    => 'dropdown',
                    'tab'     => 'SEO',
                    'options' => ["index"=>"index","noindex"=>"noindex"],
                    'default' => 'index',
                    'span'    => 'left'
                  ],
                  'settings[robot_follow]' => [
                    'label'   => 'Robot Follow',
                    'type'    => 'dropdown',
                    'tab'     => 'SEO',
                    'options' => ["follow"=>"follow","nofollow"=>"nofollow"],
                    'default' => 'follow',
                    'span'    => 'right'
                            ]
      ],  'primary');

           });

    }

}

and this is my component:

<?php namespace Stronganswer\Seo\Components;
use DB;
use Cms\Classes\ComponentBase;
use Stronganswer\Seo\models\Settings;
use RainLab\Pages\Classes\Router;
use RainLab\Blog\Models\Post;
use Cms\Classes\Theme;
use Cms\Classes\Page;
use Request;
use Event;

class BlogPost extends ComponentBase
{

  //singular page tags
public $page;
public $blog_title;
public $seo_title;
public $seo_description;
public $seo_keywords;
public $robot_index;
public $robot_follow;

//global tags
    public $ogTitle;
    public $ogDescription;
    public $ogSiteName;
    public $ogUrl;
    public $ogType;
    public $ogAuthor;
    public $ogImage;

//facebook tags
    public $ogFbAppId;
    public $ogFbAdmins;

//google tags
    public $ogGlTitle;
    public $ogGlDescription;
    public $ogGlImage;

//twitter tags
    public $ogTtCard;
    public $ogTtSite;
    public $ogTtTitle;
    public $ogTtDescription;
    public $ogTtAuthor;
    public $ogTtImage;

public function componentDetails()
{
    return [
        'name'        => 'Seo BlogPost component',
        'description' => 'handles seo fields into blogposts'
    ];
}

public function defineProperties()
{
    return [
        "post" => [
                "title" => "data",
                "default" => "post"
        ]
    ];
}

public function Run()
{
  $theme = Theme::getActiveTheme();
  $page = Page::load($theme,$this->page->baseFileName);
  $this->page["hasBlog"] = true;

  if($page->hasComponent("blogPost"))
  {
  //$seo = DB::table('rainlab_blog_posts')->get();

  //$blog_title = DB::table('rainlab_blog_posts')->where('slug','=','first-blog-post')->value('seo_title');

  //$this->seo_title = $this->page['blog_title'] = $this->page->getViewBag()->property('blog_title');
  //$this->seo_title = $this->page["seo_title"] = $this->page->seo_title;
  /*$blog_title = DB::table('rainlab_blog_posts')
                       ->select(DB::raw('select seo_title'))
                       ->where('slug', '=', 'first-blog-post')
                       ->get();*/

  $this->seo_description = $this->page["seo_description"] = $this->page->meta_description;
  $this->seo_keywords = $this->page["seo_keywords"] = $this->page->seo_keywords;
  $this->robot_follow = $this->page["robot_follow"] = $this->page->robot_follow;
  $this->robot_index = $this->page["robot_index"] = $this->page->robot_index;

  $settings = Settings::instance();

      if($settings->enable_og_tags)
      {
          $this->ogTitle = $settings->og_title;
          $this->ogDescription = $settings->og_description;
          $this->ogSiteName = $settings->og_sitename;
          $this->ogUrl = $settings->og_url;
          $this->ogType = $settings->og_type;
          $this->ogAuthor = $settings->og_author;
          $this->ogImage = $settings->og_img;
      }

      if($settings->enable_fb_tags)
      {
          $this->ogFbAppId = $settings->og_fb_appid;
          $this->ogFbAdmins = $settings->og_fb_admins;
      }

      if($settings->enable_ggl_tags)
      {
        $this->ogGlTitle = $settings->og_gl_title;
        $this->ogGlDescription = $settings->og_gl_description;
        $this->ogGlImage = $settings->og_gl_img;
      }

      if($settings->enable_tt_tags)
      {
         $this->ogTtCard = $settings->og_tt_card;
         $this->ogTtSite = $settings->og_tt_site;
         $this->ogTtTitle = $settings->og_tt_title;
         $this->ogTtDescription = $settings->og_tt_description;
         $this->ogTtAuthor = $settings->og_tt_author;
         $this->ogTtImage = $settings->og_tt_img;
      }

}
  else{
  $this->hasBlog = $this->page["hasBlog"] = false;
  }

}
}

The code within the comments are failed trys to get the values from the form. If I go to my database I can see the values that I inputed in the form but I can't call them to my component.

and my deafult.htm :

<meta name="title" content="{{__SELF__.blog_title}}">

  <meta name="description" content="{{__SELF__.seo_description}}">

  <meta name="keywords" content="{{__SELF__.seo_keywords}}">

  <meta name="robots" content="{{__SELF__.robot_index}},{{__SELF__.robot_follow}}">

  <meta property="og:site_name" content="{{ __SELF__.ogSiteName }}" />

  <meta property="og:title" content="{{ __SELF__.ogTitle }}" />

  <meta property="og:url" content="{{ __SELF__.ogUrl }}" />

  <meta property="og:description" content="{{ __SELF__.ogDescription }}" />

  <meta property="og:type" content="{{ __SELF__.ogType }}" />

  <meta name="author" content="{{ __SELF__.ogAuthor }}" />

  <meta property="og:image" content="{{ __SELF__.ogImage }}" />

  <meta property="fb:app_id" content="{{ __SELF__.ogFbAppId  }}" />

  <meta property="fb:admins" content="{{ __SELF__.ogFbAdmins  }}" />

  <meta itemprop="name" content="{{ __SELF__.ogGlTitle  }}" />

  <meta itemprop="description" content="{{ __SELF__.ogGlDescription  }}" />

  <meta itemprop="image" content="{{ __SELF__.ogGlImage  }}" />

  <meta itemprop="image" content="{{ __SELF__.ogGlImage  }}" />

  <meta name="twitter:card" content="{{__SELF__.ogTtCard}}">

  <meta name="twitter:site" content="{{__SELF__.ogTtSite}}">

  <meta name="twitter:title" content="{{__SELF__.ogTtTitle}}">

  <meta name="twitter:description" content="{{__SELF__.ogTtDescription}}">

  <meta name="twitter:creator" content="{{__SELF__.ogTtAuthor}}">

  <meta name="twitter:image:src" content="{{__SELF__.ogTtImage}}">

I also have forms for cms pages and for the rainlab pages plugin(static pages) I get them from another components that I have made and I wanted to point out that both of them are working fine.

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Answer

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To call the value from the DB I did like this:

Insert this into the component onRun fucntion:

$this->blog_seo_or_smth = DB::table('rainlab_blog_posts')->where('slug','first-blog-post')->first();

Then on the default.htm:

<meta name="title" content="{{__SELF__.blog_seo_or_smth.seo_title}}">
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source: stackoverflow.com
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