使用Rails和Vue.JS将Devise用户ID传递给Post模型

Question

我正在将前端从rails转换为Vue.JS，但对于如何将current_user的user_id引入Vue.JS表单并将其传递回rails后端，我有点困惑。我如何传递user_id，以便在我的Vue.JS表单提交新的Post时。。。它将"current_user"的user_id发送回rails DB？

新的文章视图(New.html.erb(

<%= content_tag :div, id: "new-post", data: { id: @post.id, user_id: current_user.id } do %>
<label>Title:</label>
<input type="text" class="form-control" v-model="post.title">
<button v-on:click="SavePost" class="btn btn-info">Save Post</button>

Application.JS(VUE JS(

import Vue from 'vue/dist/vue.esm'
import VueResource from 'vue-resource'
import TurbolinksAdapter from 'vue-turbolinks'
Vue.use(TurbolinksAdapter)
Vue.use(VueResource)
document.addEventListener("turbolinks:load", function() {
Vue.http.headers.common['X-CSRF-Token'] = document.querySelector('meta[name="csrf-token"]').getAttribute('content')
var element = document.getElementById("new-post")
if (element != undefined) {
var id = element.dataset.id
var post = JSON.parse(element.dataset.post)
var app = new Vue({
el: element,
data: function() {
return {
post: post,
user: current_user
}
},
methods: {
SavePost: function() {
if(this.id == null) {
this.$http.post(url, { post: this.post }).then(response => {
Turbolinks.visit(`/posts/${response.data.id}`)
}, response => {
console.log(response)
if(response.status = 422) {
var json = JSON.parse(response.bodyText);
this.errors = json["post.title"][0]
}
})
} 
},
}
})
}
});

张贴控制器

class PostsController < SignedInController
before_action :authenticate_user!, except: [:create]
layout "signed_in"
def new
@post = Post.new
end
def create
@post = Post.new(post_params)
@user = current_user
end
respond_to do |format|
if @post.save
format.html { redirect_to root_path, notice: 'Post was successfully created.' }
format.json { render json: { id: @post.id}, status: :ok  }
else
format.html { render :new }
format.json { render json: @post.errors, status: :unprocessable_entity }
# flash[:error] = @post.errors.full_messages.join(',')
# redirect_to new_post_path
end
end
def post_params
params.require(:post).permit(:title, :user_id)
end
end

后模型：

class Post < ApplicationRecord
# uncomment to make users be logged in to post Posts
belongs_to :user
end

Answer 1

如果总是为current_user创建post，则不需要在view/Vue内传递任何user_id，并让控制器执行以下操作：

def create
@post = Post.new(post_params)
@post.user = current_user
respond_to do |format|
#...
end
end