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Drupal 8 QA

API'S or Images has been blocked by CORS policy in Drupal 8:


When use REST Api in angular , then through the error CORS policy, to avoid ir

Change config in sites/default/services.yml

cors.config:
    enabled: true
    # Specify allowed headers, like 'x-allowed-header'.
    allowedHeaders: ['x-csrf-token','authorization','content-type','accept','origin','x-requested-with']
    # Specify allowed request methods, specify ['*'] to allow all possible ones.
    allowedMethods: ['*']
    # Configure requests allowed from specific origins.
    allowedOrigins: ['*']
    # Sets the Access-Control-Expose-Headers header.
    exposedHeaders: false
    # Sets the Access-Control-Max-Age header.
    maxAge: false
    # Sets the Access-Control-Allow-Credentials header.
    supportsCredentials: false

Function to load only class name to avoid the page hanged or breaked when load whole object

get_class      just like 

kint(get_class($variables['element']['#object']->get('field_media_image')->entity))

output::
string(36) "Drupal\file_entity\Entity\FileEntity"


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