尝试从React组件获取异步请求。但是,由于权限无效,它总是失败。
工作请求示例:
Started GET "/" for 127.0.0.1 at 2017-10-04 16:32:00 -0400
Processing by EventsController#index as HTML
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? ORDER BY "users"."id" ASC LIMIT ? [["id", 1], ["LIMIT", 1]]
Rendering events/index.html.erb within layouts/application
Started GET "/events/search?ne_lat=37.82915414554321&ne_lng=-122.13221051635742&sw_lat=37.72060601151162&sw_lng=-122.70658948364257" for 127.0.0.1 at 2017-10-04 16:32:07 -0400
Processing by EventsController#search as */*
Parameters: {"ne_lat"=>"37.82915414554321", "ne_lng"=>"-122.13221051635742", "sw_lat"=>"37.72060601151162", "sw_lng"=>"-122.70658948364257"}
... #NOTE: printing 'user' from byebug in ability.rb shows it as nil
CanCan::AccessDenied (You are not authorized to access this page.):
请注意,失败的请求不会从DB查询中选择/加载用户。你知道会出什么问题吗?能力rb权限允许此请求,但异步调用时未正确填写用户。
这个请求以前使用jQuery工作,但我使用
fetch
.
class EventsController < ApplicationController
before_action :set_event, only: [:show, :edit, :update, :destroy]
load_and_authorize_resource
def index
@events = Event.all
end
...
def search
local_events = Event.includes(:address).references(:address)
.where("latitude >= ? AND latitude <= ? AND longitude >= ? AND longitude <= ?",
params[:sw_lat], params[:ne_lat], params[:sw_lng], params[:ne_lng]
)
.limit(50)
render json: local_events, only: [:id,:name,:description,:start], include: { address: { only: [:latitude,:longitude,:street_address] }}
end
end
class Ability
include CanCan::Ability
def initialize(user)
can :read, :all
byebug
return if user == nil #user must be logged in after this point
#events
can [:search], Event
...
end
end
