Rails Controller Example with Error Messages

rails_controller_example.rb

class StudentsController < ApplicationController
    before_action :find_student, except: [:index, :new, :create]

    def index
        @students = Student.all
    end

    def show
    end

    def new
        @student = Student.new
    end

    def edit
    end

    def create
        @student = Student.new(params[:student])
        if @student.save
          flash[:success] = "Student successfully created"
          redirect_to @student
        else
          flash[:error] = "Something went wrong"
          render 'new'
        end
    end

    def update
        if @student.update_attributes(params[:student])
          flash[:success] = "Student was successfully updated"
          redirect_to @student
        else
          flash[:error] = "Something went wrong"
          render 'edit'
        end
    end

    def destroy
        if @student.destroy
            flash[:success] = "Student was successfully deleted"
            redirect_to @students_path
        else
            flash[:error] = "Something went wrong"
            redirect_to @students_path
        end
    end

    private

        def find_student
            @student = Student.find(params[:id])
        end
end