Ich habe Dish
und Comment
Modelle wie unten in meiner Rails 5.1 API App - Code Repo here. Ich brauche Hilfe beim Hinzufügen eines neuen Comment
zu einem Dish
.PUT mit verschachtelten Objekt
Beitrag
class Dish < ApplicationRecord
has_many :comments
end
Kommentar
class Comment < ApplicationRecord
belongs_to :dish
end
Beitrag Serializer (verwendet ActiveModel Seriazlier)
class DishSerializer < ActiveModel::Serializer
attributes :id, :name, :image, :category, :label, :price, :featured, :description, :created_at
has_many :comments
end
Kommentar Serializer
class CommentSerializer < ActiveModel::Serializer
attributes :id, :rating, :comment, :author, :date
def date
object.created_at
end
end
Beitrag Controller- - Standardschienen
class DishesController < ApplicationController
before_action :set_dish, only: [:show, :update, :destroy]
# GET /dishes
def index
@dishes = Dish.all
render json: @dishes
end
# GET /dishes/1
def show
render json: @dish
end
# POST /dishes
def create
@dish = Dish.new(dish_params)
if @dish.save
render json: @dish, status: :created, location: @dish
else
render json: @dish.errors, status: :unprocessable_entity
end
end
# PATCH/PUT /dishes/1
def update
# byebug
if @dish.update(dish_params)
render json: @dish
else
render json: @dish.errors, status: :unprocessable_entity
end
end
# DELETE /dishes/1
def destroy
@dish.destroy
end
private
# Use callbacks to share common setup or constraints between actions.
def set_dish
@dish = Dish.find(params[:id])
end
# Only allow a trusted parameter "white list" through.
def dish_params
params.require(:dish).permit(:name, :image, :category, :label, :price, :featured, :description)
end
end
Kommentar-Controller Gerüst - Standardschienen Gerüst
class CommentsController < ApplicationController
before_action :set_comment, only: [:show, :update, :destroy]
# GET /comments
def index
@comments = Comment.all
render json: @comments
end
# GET /comments/1
def show
render json: @comment
end
# POST /comments
def create
@comment = Comment.new(comment_params)
if @comment.save
render json: @comment, status: :created, location: @comment
else
render json: @comment.errors, status: :unprocessable_entity
end
end
# PATCH/PUT /comments/1
def update
if @comment.update(comment_params)
render json: @comment
else
render json: @comment.errors, status: :unprocessable_entity
end
end
# DELETE /comments/1
def destroy
@comment.destroy
end
private
# Use callbacks to share common setup or constraints between actions.
def set_comment
@comment = Comment.find(params[:id])
end
# Only allow a trusted parameter "white list" through.
def comment_params
params.require(:comment).permit(:rating, :comment, :author)
end
end
Ausgabe
Wenn ein Nutzer besucht /dishes/:id
und fügt einen Kommentar zu einem Gericht über die Front-End-Anwendung (Angular 2), ist die comment
Push-to-Array von aktuellen Kommentaren und ich bin PUT /dishes:id
mit dem dish
Objekt Aufruf mit dem verschachtelten bestehende comments
und der neue Kommentar. Das neue comment
wird jedoch nicht von den Schienen gespeichert - es wird kein Fehler zurückgegeben, stattdessen wird das Objekt dish
zurückgegeben. Allerdings sehe ich Unpermitted parameters: :id, :created_at
in rails s
Konsole. Wie bekomme ich Schienen, um den neuen Kommentar zu speichern?
Die Seite (dishes/9
) von wo ich den Kommentar zu einem Gericht hinzufügen, sieht wie folgt auf der Angular-Client-Seite aus.
Rails Server-Protokolle
Auf der Seitenschienen, unten ist das, was ich in params
sehen - sehe ich den neuen Kommentar - {"author"=>"JANE7777", "rating"=>3, "comment"=>"COMMENT7777", "date"=>"2017-11-12T12:58:12.555Z"}
drin.
Started PUT "/dishes/9" for 127.0.0.1 at 2017-11-12 18:28:12 +0530
Processing by DishesController#update as HTML
Parameters: {"id"=>"9", "name"=>"Uthappizza", "image"=>"images/uthappizza.png", "category"=>"mains", "label"=>"Hot", "price"=>"4.99", "featured"=>true, "description"=>"A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.", "created_at"=>"2017-11-01T04:30:09.407Z", "comments"=>[{"id"=>46, "rating"=>5, "comment"=>"Imagine all the eatables, living in conFusion!", "author"=>"John Lemon", "date"=>"2012-10-16T17:57:28.556Z"}, {"id"=>47, "rating"=>4, "comment"=>"Sends anyone to heaven, I wish I could get my mother-in-law to eat it!", "author"=>"Paul McVites", "date"=>"2014-09-05T17:57:28.556Z"}, {"id"=>48, "rating"=>3, "comment"=>"Eat it, just eat it!", "author"=>"Michael Jaikishan", "date"=>"2015-02-13T17:57:28.556Z"}, {"id"=>49, "rating"=>4, "comment"=>"Ultimate, Reaching for the stars!", "author"=>"Ringo Starry", "date"=>"2013-12-02T17:57:28.556Z"}, {"id"=>50, "rating"=>2, "comment"=>"It's your birthday, we're gonna party!", "author"=>"25 Cent", "date"=>"2011-12-02T17:57:28.556Z"}, {"id"=>51, "rating"=>4, "comment"=>"great dish", "author"=>"Jogesh", "date"=>"2017-10-30T05:03:39.656Z"}, {"author"=>"JANE7777", "rating"=>3, "comment"=>"COMMENT7777", "date"=>"2017-11-12T12:58:12.555Z"}], "dish"=>{"id"=>"9", "name"=>"Uthappizza", "image"=>"images/uthappizza.png", "category"=>"mains", "label"=>"Hot", "price"=>"4.99", "featured"=>true, "description"=>"A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.", "created_at"=>"2017-11-01T04:30:09.407Z"}}
Dish Load (1.0ms) SELECT "dishes".* FROM "dishes" WHERE "dishes"."id" = $1 LIMIT $2 [["id", 9], ["LIMIT", 1]]
[25, 34] in C:/apps/railsApi/app/controllers/dishes_controller.rb
25: end
26:
27: # PATCH/PUT /dishes/1
28: def update
29: byebug
=> 30: if @dish.update(dish_params)
31: render json: @dish
32: else
33: render json: @dish.errors, status: :unprocessable_entity
34: end
(byebug) params
<ActionController::Parameters {"id"=>"9", "name"=>"Uthappizza", "image"=>"images/uthappizza.png", "category"=>"mains", "label"=>"Hot", "price"=>"4.99", "featured"=>true, "description"=>"A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.", "created_at"=>"2017-11-01T04:30:09.407Z", "comments"=>[{"id"=>46, "rating"=>5, "comment"=>"Imagine all the eatables, living in conFusion!", "author"=>"John Lemon", "date"=>"2012-10-16T17:57:28.556Z"}, {"id"=>47, "rating"=>4, "comment"=>"Sends anyone to heaven, I wish I could get my mother-in-law to eat it!", "author"=>"Paul McVites", "date"=>"2014-09-05T17:57:28.556Z"}, {"id"=>48, "rating"=>3, "comment"=>"Eat it, just eat it!", "author"=>"Michael Jaikishan", "date"=>"2015-02-13T17:57:28.556Z"}, {"id"=>49, "rating"=>4, "comment"=>"Ultimate, Reaching for the stars!", "author"=>"Ringo Starry", "date"=>"2013-12-02T17:57:28.556Z"}, {"id"=>50, "rating"=>2, "comment"=>"It's your birthday, we're gonna party!", "author"=>"25 Cent", "date"=>"2011-12-02T17:57:28.556Z"}, {"id"=>51, "rating"=>4, "comment"=>"great dish", "author"=>"Jogesh", "date"=>"2017-10-30T05:03:39.656Z"}, {"author"=>"JANE7777", "rating"=>3, "comment"=>"COMMENT7777", "date"=>"2017-11-12T12:58:12.555Z"}], "controller"=>"dishes", "action"=>"update", "dish"=>{"id"=>9, "name"=>"Uthappizza", "image"=>"images/uthappizza.png", "category"=>"mains", "label"=>"Hot", "price"=>"4.99", "featured"=>true, "description"=>"A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.", "created_at"=>"2017-11-01T04:30:09.407Z"}} permitted: false>
(byebug) c
Unpermitted parameters: :id, :created_at
(0.0ms) BEGIN
(0.0ms) COMMIT
[active_model_serializers] Comment Load (0.0ms) SELECT "comments".* FROM "comments" WHERE "comments"."dish_id" = $1 [["dish_id", 9]]
[active_model_serializers] Rendered DishSerializer with ActiveModelSerializers::Adapter::Attributes (31.29ms)
Completed 200 OK in 1901725ms (Views: 37.5ms | ActiveRecord: 5.0ms)
clientseitige Modelle
Die Dish
Modell Comment[]
als eines der Mitglieder hat. Wenn ein neuer Kommentar über das Formular hinzugefügt wird, wird die comment
an das Array dish.comments
gesendet, bevor das Objekt Dish
an das Rails-API-Back-End gesendet wird.
Comment
Modell in Client-Seite
export class Comment {
rating: number;
comment: string;
author: string;
date: string;
}
Post
Modell in Client-Seite
import { Comment } from './comment';
export class Dish {
id: number;
name: string;
image: string;
category: string;
label: string;
price: string;
featured: boolean;
description: string;
comments: Comment[];
}
Haben Sie CSRF-Probleme und den angezeigten Fehler im Zusammenhang mit unzulässigen Parametern überprüft? PUT ist zum Aktualisieren, POST ist zum Erstellen. Sie können versuchen, eine verschachtelte Ressource zu verwenden, oder wenn Sie weiter Push verwenden möchten, fügen Sie access_nested_attributes für in disf.rb für comment.rb hinzu. Versuchen Sie, einen kleinen Testfall zu schreiben, anstatt ihn erneut zu versuchen oder zu testen, um den Code in der byebug-Konsole zu verstehen oder auszuführen. – Sairam
Ich benutze 'Rack-Cors' und habe konfiguriert - meine GET-Anfragen funktionieren gut !! – user3206440
Warum machst du nicht eine separate Aktion comments # create? Deine Lösung ist Hacky. Selbst wenn es funktionieren sollte, sollte man nicht wirklich danach suchen. – AntonTkachov