Rails: undefined method `each' for nil:NilClass - ruby-on-rails

Question

I want to build a for loop but I an this error.
undefined method `each' for nil:NilClass
That is the part of the view, which gives me the error:
<% #deadlines.each do |deadline| %>
<% if Time.now < deadline.deadline %>
<%= form_for(current_user) do |f| %>
<%= f.hidden_field :enrolled, :value => true %>
<%= f.submit "Anmeldung bestätigen", class: "btn btn-primary" %>
<% end %>
<% end %>
<% end %>
Seems like #deadlines is not recognized, even though I already used the same loop in the Index view of the deadlines folder. How can I use the same variable in my homepage view?
Thanks a lot!
Here is the Controller, maybe it also gives you some information:
class DeadlinesController < ApplicationController
before_action :set_deadline, only: [:show, :edit, :update, :destroy]
# GET /deadlines
# GET /deadlines.json
def index
#deadlines = Deadline.all
end
# GET /deadlines/1
# GET /deadlines/1.json
def show
end
# GET /deadlines/new
def new
#deadline = Deadline.new
end
# GET /deadlines/1/edit
def edit
end
# POST /deadlines
# POST /deadlines.json
def create
#deadline = Deadline.new(deadline_params)
respond_to do |format|
if #deadline.save
format.html { redirect_to #deadline, notice: 'Deadline was successfully created.' }
format.json { render :show, status: :created, location: #deadline }
else
format.html { render :new }
format.json { render json: #deadline.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /deadlines/1
# PATCH/PUT /deadlines/1.json
def update
if #deadline.update(deadline_params)
flash[:success] = "Die Deadline wurde erfolgreich aktualisiert."
redirect_to deadlines_path
else
flash[:error] = "Die Deadline wurde nicht aktualisiert."
end
end
# DELETE /deadlines/1
# DELETE /deadlines/1.json
def destroy
#deadline.destroy
respond_to do |format|
format.html { redirect_to deadlines_url, notice: 'Deadline was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_deadline
#deadline = Deadline.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def deadline_params
params.require(:deadline).permit(:deadline)
end
end

Answer 1

Your #deadlines is empty now, use this #deadlines = Deadline.all to your homepage controller action and each block modify like this
<% if #deadlines.present? %>
<% #deadlines.each do |deadline| %>
<% if Time.now < deadline.deadline %>
<%= form_for(current_user) do |f| %>
<%= f.hidden_field :enrolled, :value => true %>
<%= f.submit "Anmeldung bestätigen", class: "btn btn-primary" %>
<% end %>
<% end %>
<% end %>
<% else %>
Deadline is empty
<% end %>
When #deadlines is empty then it will show Deadline is empty