tab/app/controllers/application_controller.rb

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class ApplicationController < ActionController::Base
# Prevent CSRF attacks by raising an exception.
# For APIs, you may want to use :null_session instead.
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protect_from_forgery with: :exception
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rescue_from CanCan::AccessDenied do |exception|
redirect_to root_url, alert: exception.message
end
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def authenticate_user_or_client!
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current_user || current_client || head(:unauthorized)
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end
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def current_client
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@current_client ||= Client.find_by key: request.headers["X-API-KEY"]
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end
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def current_ability
if current_user
@current_ability ||= Ability.new(current_user)
elsif current_client
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@current_ability ||= ClientAbility.new(current_client)
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end
end
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end