Having problems setting a delete route - ruby-on-rails

Question

Took me a while but finally was able to have a user_id and friend_id associate with each other through friendships model. The problem I'm having is:
When clicking "add friend"
<% #users.each do |user| %>
<% if user.user_name != current_user.user_name %>
<% if #friendshiplink.nil? %>
<%= user.user_name %>
<%= link_to "Add Friend", friendships_path(friend_id: user.id), method: :post %>
<% else %>
<%= link_to(
("Unfollow"),
"/friendships/#{ #friendship.id }",
method: :delete ) %>
<% end %>
<% end %>
<% end %>
I get in respond is:
undefined method `id' for nil:NilClass
Extracted source (around line #86):
<% else %>
<%= link_to(
("Unfollow"),
"/friendships/#{ #friendship.id }",
method: :delete ) %>
<% end %>
<% end %>
Please let me know if I'm missing any code in order to further understand what might be the issue
Rake Routes
friendships POST /friendships(.:format) friendships#create
friendship DELETE /friendships/:id(.:format) friendships#destroy
Friendship Controller
class FriendshipsController < ApplicationController
def create
# #friendship = current_user.friendships.build
# #friendship.friend_id = params[:friend_id]
# #friendship.user_id = current_user.id
#friendship = current_user.friendships.build(friend_id: params[:friend_id])
if #friendship.save
flash[:notice] = "Added friend."
redirect_to "/users/#{ params[:friend_id] }"
else
flash[:notice] = "Unable to add friend"
redirect_to root_url
end
end
def destroy
#friendship = current_user.friendships.find(params[:id])
#friendship.destroy
flash[:notice] = "Removed friendship."
redirect_to current_user
end
private
def friendship_params
params.require(:friendship).permit(:user_id, :friend_id)
end
end
User Controller
def index
#user = User.new
#users = User.all
if current_user
#leaders = #current_user.leaders
end
end
def create
#user = User.new(user_params)
if #user.save
session[:user_id] = #user.id
cookies[:user_id] = #user.id
flash[:notice] = "Successfully Registerd"
redirect_to "/"
else
flash[:alert] = #user.errors.full_messages
redirect_to "/"
end
end
def new
#user = User.new
end
def edit
#user = User.friendly.find(params[:id])
current_user
end
def show
#users = User.all
#user = User.friendly.find(params[:id])
current_user
if #current_user
#followerlink = Follower.where(leader_id: #user.id,
follower_id: #current_user.id).first
#friendshiplink = Friendship.where(friend_id: #user.id,
user_id: #current_user.id).first
end
end
def update
#user = User.friendly.find(params[:id])
if #user.update(user_params)
flash[:notice] = "You have successfully update your information"
redirect_to "/"
else
flash[:alert] = #user.errors.full_messages
redirect_to "/"
end
end
def destroy
#user = User.friendly.find(params[:id])
#user.destroy
end
private
def user_params
params.require(:user).permit(:background, :username_or_email, :first_name, :last_name, :email, :password, :user_name, :avatar, :gender, :zip_code, :birthdate)
end
Where code is in user/view
<div id="user_profile">
<div id="profile_top">
<p class="profile_logo"></p>
<nav>
<div class="profile_loginout">
<%= link_to ("LOGOUT"), "/sessions/new",method: :delete %>
</div>
<div class="profile_user-links">
<a href="/users/<%= current_user.id %>">
<% if current_user.user_name.present? %>
<%= link_to current_user.user_name, user_path(current_user) %>
<% else %>
<%= current_user.first_name %>
<% end %>
</a>
<b class="size">|</b>
Settings
<b class="size">|</b>
</div>
</nav>
</div>
<div id="profile_to">
<div class="profile_background_picture">
<%= image_tag #user.background.url(:medium) %>
</div>
<div class="profile_picture">
<%= image_tag #user.avatar.url(:medium) %>
</div>
</div>
</div>
<% if #current_user && #user.id != #current_user.id %>
<% if !#followerlink %>
<form action="/followers" method="POST">
<input type="hidden"
name="authenticity_token"
value="<%= form_authenticity_token %>">
<input type="hidden"
name="leader_id"
value=<%= #user.id %>>
<input type="submit" value="Follow" class="followlink">
</form>
<% else %>
<div class="followlink">
<%= link_to(
("Unfollow"),
"/followers/#{ #followerlink.id }",
method: :delete ) %>
</div>
<% end %>
<% end %>
<p>Username: <%= #user.user_name %></p>
<h2>Friends</h2>
<ul>
<% for friendship in #user.friendships %>
<li>
(<%= link_to "remove", friendship, method: :delete %>)
</li>
<% end %>
</ul>
<p><%= link_to "Find Friends", users_path %></p>
<h2> Users who Have Befriended you </h2>
<ul>
<% for user in #user.inverse_friends %>
<li> <%= h user.user_name %></li>
<% end %>
</ul>
<% #users.each do |user| %>
<% if user.user_name != current_user.user_name %>
<% if #friendshiplink.nil? %>
<%= user.user_name %>
<%= link_to "Add Friend", friendships_path(friend_id: user.id), method: :post %>
<% else %>
<%= link_to "Unfollow", friendships_unfollow_path(#friendship), method: :delete %>
<% end %>
<% end %>
<% end %>
Thank you for all the help or hints in solving the issue. Greatly appreciate it.

Answer 1

On top of my head, not sure it's working but try it...
In routes:
delete '/friendships/:id', to: 'friendships_controller#destroy', as: 'friendships_unfollow'
In view:
<%= link_to "Unfollow", friendships_unfollow_path(#friendship), method: :delete %>
It is unclear where do you get your #friendship variable.