added corsheaders

backend/RateMyCourse/settings.py

@@ -31,6 +31,7 @@ ALLOWED_HOSTS = []
 # Application definition
 
 INSTALLED_APPS = [
+    'corsheaders',
     'postings',
     'django.contrib.admin',
     'django.contrib.auth',
@@ -46,6 +47,8 @@ MIDDLEWARE = [
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
+    'corsheaders.middleware.CorsMiddleware',
+    'django.middleware.common.CommonMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
@@ -71,6 +74,7 @@ TEMPLATES = [
 
 WSGI_APPLICATION = 'RateMyCourse.wsgi.application'
 
+CORS_ORIGIN_ALLOW_ALL = True
 
 # Database
 # https://docs.djangoproject.com/en/2.0/ref/settings/#databases