如何通过rails api实现部分更新

rails new my_api --api

rails generate model User name:string email:string

rails db:migrate

rails generate controller Users

Rails.application.routes.draw do
  resources :users, only: [:index, :show, :update]
end

class UsersController < ApplicationController
  before_action :set_user, only: [:show, :update]

  def index
    @users = User.all
    render json: @users
  end

  def show
    render json: @user
  end

  def update
    if @user.update(user_params)
      render json: @user
    else
      render json: @user.errors, status: :unprocessable_entity
    end
  end

  private

  def set_user
    @user = User.find(params[:id])
  end

  def user_params
    params.require(:user).permit(:name, :email)
  end
end

PATCH /users/1
Content-Type: application/json

{
  "user": {
    "name": "John Doe"
  }
}