Cannot delete records in Rails

Question

I have three models: Project, team and users.

Team has many projects associated.

In my projects def I want to delete teams associated to projects but nothing happens when I click delete.

My destroy def is as follows:

def destroy
  @project = Project.find(params[:id])
  @team = project.team
  @project.destroy
  # edit #1 shown below:
  respond_to do |format|
    format.html { redirect_to @team, notice: 'Project was successfully destroyed.' }
  end
end

And making the button inside show.erb.html to delete project and link back to project path

<%= link_to 'Delete Project', project_path(@project), data: { confirm: 'Are you sure'}, method: :destroy, class:'button is-danger is-outlined' %>
                        </div>

Routes:

Rails.application.routes.draw do
  resources :projects
  resources :teams
  as :user do
    put '/user/confirmation' => 'confirmations#update', :via => :patch, :as => :update_user_confirmation
  end



   devise_for :users, controllers: {
    registrations: 'registrations',
    confirmations: 'confirmations'
  }
  devise_scope :user do  
    get '/users/sign_out' => 'devise/sessions#destroy'     
  end
  root 'home#index'
end

I'm still very new to rails and cannot find a reason for why this may be occuring.

Edit 2 - More details

Projects Controller is as follows:

class ProjectsController < ApplicationController
  before_action :set_project, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!, only: [:edit, :update, :destroy]

  # GET /projects
  # GET /projects.json
  def index
    @projects = Project.all.order('created_at DESC')
  end

  # GET /projects/1
  # GET /projects/1.json
  def show
  end

  # GET /projects/new
  def new
    @project = current_user.projects.build
    @teams = Team.where('id = ?', current_user.team_id)
  end

  # GET /projects/1/edit
  def edit
    @teams = current_user.teams
  end

  # POST /projects
  # POST /projects.json
  def create
    @project = current_user.projects.build(project_params)

    respond_to do |format|
      if @project.save
        format.html { redirect_to @project, notice: 'Project was successfully created.' }
        format.json { render :show, status: :created, location: @project }
      else
        format.html { render :new }
        format.json { render json: @project.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /projects/1
  # PATCH/PUT /projects/1.json
  def update
    respond_to do |format|
      if @project.update(project_params)
        format.html { redirect_to @project, notice: 'Project was successfully updated.' }
        format.json { render :show, status: :ok, location: @project }
      else
        format.html { render :edit }
        format.json { render json: @project.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /projects/1
  # DELETE /projects/1.json
  def destroy
    @project = Project.find(params[:id])
    @team = project.team
    @project.destroy
    # edit #1 shown below:
    respond_to do |format|
      format.html { redirect_to @team, notice: 'Project was successfully destroyed.' }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_project
      @project = Project.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def project_params
      params.require(:project).permit(:name, :description, :team_id)
    end
end

Answer 1

Redirecting to a resource after you delete it doesn't work, because that resource no longer exists. So the controller action should probably redirect to the deleted projects team:

def destroy
  @project = Project.find(params[:id])
  @team = project.team
  @project.destroy
  # edit #1 shown below:
  respond_to do |format|
    format.html { redirect_to @team, notice: 'Project was successfully destroyed.' }
  end
end

Then your link_to should use method: :delete, NOT method: :destroy:

<%= link_to 'Delete Project', project_path(@project), data: { confirm: 'Are you sure'}, method: :delete, class:'button is-danger is-outlined' %>

Ref: https://api.rubyonrails.org/v5.2.3/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to-label-Options

See if that gets you going, and if not please share some debugging information.

Edit #1: In your controllers destroy action, you need to do a little more work to handle how rails responds to requests. I didn't notice it missing before but the action should have a respond_to block where you can choose to respond different ways basically. I modified the above controller action code to give you an example.