@space = Space.find(params[:id])

class SpacesController < ApplicationController
  before_action :set_space, except: [:index, :new, :create]
  before_action :authenticate_user!, except: [:show]


  def update
    if @space.update(space_params)
      flash[:notice] = "Saved!"
    else
      flash[:notice] = "Something went wrong. Please check your submission and try again."
    end
      redirect_back(fallback_location: request.referer)
  end


  def delete_image_attachment
    @space_image = ActiveStorage::Blob.find_signed(params[:id])
    @space_image.purge_later
    redirect_to listing_space_path(@space)
  end

  private
    def set_space
      @space = Space.find(params[:id])
    end

    def space_params
        params.require(:space).permit(:space_name, :space_type, :description, space_image: [])
    end

end

<div>
  <% if @space.image.attached? %>
      <% @space.image.each do |image| %>
      <%= image_tag image %>
      <span>
        <%= link_to '<- Remove', delete_image_attachment_space_url(image.signed_id),
                method: :delete,
                data: { confirm: 'Are you sure?' } %>
        <i class="fas fa-trash"></i>
      </span>
    <% end %>
  <% end %>
</div>

resources :spaces, except: [:edit] do
  member do
    get 'listing'
    delete :delete_image_attachment
  end
end