title: How to use global variable in symfony twig file?
body: <p>I have done setting in app/config/config.yml</p>
  
  <pre><code>twig:
  
  globals:
  
    mandatory_note: %mandatory_note%
  </code></pre>
  
  <p>parameter also set in config.yml file</p>
  
  <p>parameters:</p>
  
  <pre><code>mandatory_note: "Note: * marked fields are mandatory"
  </code></pre>
  
  <p>And in twig file I have accessed the variable</p>
  
  <p>{{ mandatory_note }}</p>
  
  <p>but still gets error. ie. mandatory_note variable doesnot exists.</p>
  
  <p><strong>This is my config.yml file</strong></p>
  
  <pre><code>imports:
      - { resource: parameters.yml }
      - { resource: security.yml }
      - { resource: services.yml }
  
  framework:
      #esi:             ~
      translator:      { fallbacks: ["%locale%"] }
      secret:          "%secret%"
      router:
          resource: "%kernel.root_dir%/config/routing.yml"
          strict_requirements: ~
      form:            ~
      csrf_protection: ~
      validation:      { enable_annotations: true }
      templating:
          engines: ['twig']
          #assets_version: SomeVersionScheme
      default_locale:  "%locale%"
      trusted_hosts:   ~
      trusted_proxies: ~
      session:
          cookie_lifetime: 0
          gc_maxlifetime: 36000
          # handler_id set to null will use default session handler from php.ini
          handler_id:  ~
      fragments:       ~
      http_method_override: true
  
  # Twig Configuration
  twig:
      debug:            "%kernel.debug%"
      strict_variables: "%kernel.debug%"
  
  # Assetic Configuration
  assetic:
      debug:          "%kernel.debug%"
      use_controller: false
      bundles:        []
      #java: /usr/bin/java
      filters:
          cssrewrite: ~
          #closure:
          #    jar: "%kernel.root_dir%/Resources/java/compiler.jar"
          #yui_css:
          #    jar: "%kernel.root_dir%/Resources/java/yuicompressor-2.4.7.jar"
  
  # Doctrine Configuration
  doctrine:
      dbal:
          driver:   "%database_driver%"
          host:     "%database_host%"
          port:     "%database_port%"
          dbname:   "%database_name%"
          user:     "%database_user%"
          password: "%database_password%"
          unix_socket: "/opt/lampp/var/mysql/mysql.sock"
          charset:  UTF8
          mapping_types: 
              enum:       integer
          # if using pdo_sqlite as your database driver:
          #   1. add the path in parameters.yml
          #     e.g. database_path: "%kernel.root_dir%/data/data.db3"
          #   2. Uncomment database_path in parameters.yml.dist
          #   3. Uncomment next line:
          #     path:     "%database_path%"
  
      orm:
          auto_generate_proxy_classes: "%kernel.debug%"
          auto_mapping: true
  
  # Swiftmailer Configuration
  swiftmailer:
      transport: "%mailer_transport%"
      host:      "%mailer_host%"
      username:  "%mailer_user%"
      password:  "%mailer_password%"
      spool:     { type: memory }
      encryption: "%mailer_encryption%"
      port: "%mailer_port%"
      sender_address: "%mailer_sender%"
  parameters:
      max_contents_per_page: 20
      max_pages_per_page: 10
      mandatory_note: "Note: * marked fields are mandatory"
  
  twig:
      globals:
          mandatory_note: %mandatory_note%  
  </code></pre>