vereto-api/app/controllers/v1/articles_controller.rb

class V1::ArticlesController < ApplicationController
  before_action :set_article, only: [:show, :update, :destroy]
  skip_before_action :authorize_request, only: [:index, :show]

  # GET /articles
  def index
    posts_per_page = 10
    current_page = params[:page]
    @article =  Article.all.order(created_at: :desc).paginate(page: current_page, per_page: 10)
    total_pages = (@article.count / posts_per_page).ceil

    pagination = {
        "current_page": current_page.to_i == 0 ? 1 : current_page,
        "last_page": total_pages,
        "next_page": "#{current_page.to_i < total_pages.to_i ? (current_page.to_i+1) : (current_page)}",
        "prev_page": "#{current_page.to_i > 1 ? (current_page.to_i-1) : (current_page)}"
    }
    json_response({articles: @article.as_json(include: [:user, :comments]), pagination: pagination})
  end

  # POST /articles
  def create
    @article = current_user.articles.create!(article_params)
    json_response(@article, :created)
  end

  # GET /articles/:id
  def show
    json_response(@article.to_json(include: :user))
  end

  # PUT /articles/:id
  def update
    @article.update(article_params)
    head :no_content
  end

  # DELETE /articles/:id
  def destroy
    @article.destroy
    head :no_content
  end

  private

  def article_params
    # whitelist params
    params.permit(:title, :post, :page)
  end

  def set_article
    @article = Article.find(params[:id])
  end

end