目前我无法更新我的obj，因为我收到了rails 422无法处理的实体错误。我已经正确定义了所有参数，不确定为什么会发生这种情况，请查看下面的代码。我有一个rails后端和react前端。Routes.rb在我的控制台上；EditReserveForm.js:14补丁http://localhost:4000/reservations/2422(不可处理实体("；在轨道日志
Started PATCH "/reservations/2" for 127.0.0.1 at 2022-09-01 11:53:07 +0530
Processing by ReservationsController#update as */*
Parameters: {"name"=>"koshieee", "date"=>"2022-08-30", "time"=>"2000-01-01T18:29:00.000Z", "num"=>2, "contact"=>12345, "occasion"=>"Bday", "id"=>"2", "reservation"=>{"name"=>"koshieee", "date"=>"2022-08-30", "time"=>"2000-01-01T18:29:00.000Z", "num"=>2, "contact"=>12345, "occasion"=>"Bday"}}
hello
4
Rails.application.routes.draw do
resources :reservations,only: [:index,:show,:create,:update,:destroy]
resources :reviews,only: [:index,:create,:destroy]
resources :restaurants,only: [:index]
post "/signup", to: "users#create"
get "/me", to: "users#show"
post "/login", to: "sessions#create"
delete "/logout", to: "sessions#destroy"
end
预订控制器
class ReservationsController < ApplicationController
def index
reservations = @current_user.reservations
render json: reservations
end
def show
reservation = Reservation.find_by(id: params[:id])
if reservation
render json: reservation
else
render json: { error: "Reservation not found" }, status: :not_found
end
end
def create
reservation=Reservation.create!(reservation_params)
render json: reservation,status: :created
end
def update
reservation = Reservation.find_by(id: params[:id])
reservation.update!(reservation_params)
render json: reservation,status: :ok
end
def destroy
reservation = Reservation.find_by(id:params[:id])
if reservation
reservation.destroy
head :no_content
else
render json: {error: "Reservation Not Found ."}, status: :not_found
end
end
private
def reservation_params
params.permit(:name, :date, :time, :num, :contact, :occasion,:user_id,:restaurant_id)
end
end
EditForm.js
import { useState } from "react";
function EditReservationForm({reservation,onUpdateReservation}){
const{ name, date, time, num, contact, occasion}=reservation;
const[updateName,setUpdatedName]=useState(name);
const[updateDate,setUpdatedDate]=useState(date);
const[updateTime,setUpdatedTime]=useState(time);
const[updateNum,setUpdatedNum]=useState(num);
const[updateContact,setUpdatedContact]=useState(contact);
const[updateOccasion,setUpdatedOccasion]=useState(occasion);
function handleEditClick(e) {
e.preventDefault()
fetch(`/reservations/${reservation.id}`, {
method: "PATCH",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({ name:updateName,date:updateDate, time:updateTime,num:updateNum,contact:updateContact,occasion:updateOccasion}),
})
.then((r) => r.json())
.then((updatedReservation) => {
onUpdateReservation(updatedReservation);
});
}
return(
<>
<h2>Modify Reservation</h2>
<form onSubmit={handleEditClick} >
<div >
<label htmlFor="name" >Name</label>
<input type="text" name="name" value={updateName} onChange={(e) => setUpdatedName(e.target.value)} placeholder="name" />
</div>
<div >
<label htmlFor="date" >Date</label>
<input type="date" name="date" value={updateDate} onChange={(e) => setUpdatedDate(e.target.value)} placeholder="date" />
</div>
<div >
<label htmlFor="time" >Time</label>
<input type="time" name="time" value={updateTime} onChange={(e) => setUpdatedTime(e.target.value)} placeholder="time" />
</div>
<div >
<label htmlFor="num" >Num</label>
<input type="number" name="num" value={updateNum} onChange={(e) => setUpdatedNum(e.target.value)} placeholder="num" />
</div>
<div >
<label htmlFor="date" >Contact</label>
<input type="tel" name="contact" value={updateContact} onChange={(e) => setUpdatedContact(e.target.value)} placeholder="contact" />
</div>
<div >
<label htmlFor="occasion" >Occasion</label>
<input type="text" name="occasion" value={updateOccasion} onChange={(e) => setUpdatedOccasion(e.target.value)} placeholder="occasion" />
</div>
<button type="submit">Update Reservation</button>
</form>
</>
)
}
export default EditReservationForm;
```
您的强参数不能正确地确定嵌套参数的范围。我想应该是这样的：
def reservation_params
params.require(:reservation)
.permit(:name, :date, :time, :num, :contact, :occasion, :user_id, :restaurant_id)
end
请注意，当前参数中既没有:user_id，也没有:restaureant_id。