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def request_widget_backend(path, method = :get, parameters = {})
  request_params = {
    method:   method,
    url:      build_bpm_widget_path(path),
    user:     bpm_config.login,
    password: bpm_config.password
  }
 
  if method == :get
    request_params.merge!({headers: {params: parameters.merge(bpm_parameters)}})
  else
    request_params.merge!({payload: parameters.merge(bpm_parameters)})
  end
 
  RestClient::Request.execute(request_params)
end
 
private
 
def bpm_parameters
  {
    user_identifier: user_identifier,
    entity_type:     params[:entity_type],
    entity_code:     params[:entity_code],
    entity_class:    params[:entity_class]
  }
end
 
def build_bpm_widget_path(path = '')
  URI.join(bpm_config.url, '/widget/', path).to_s
end
 def
request_params(path)
  {
    url:      build_bpm_widget_path(path),
    user:     configuration[:login],
    password: configuration[:password],
    headers: {
      'Content-Type': 'application/json'
    }
  }
end

def bpm_config
  YourApplication::Config.widgets.bpm
end