私は友情モデルで立ち往生しています。私はユーザーと何度も友達になることができます。したがって、友達リンクに追加しないようにするための条件が必要です。私のusers_controller:
class UsersController < ApplicationController
before_filter :authenticate_user!
def index
@users = User.all
end
def show
@user = User.find(params[:id])
@topics = @user.topics.paginate(page: params[:page])
@friendship = @user.friendships.build(:friend_id => params[:friend_id])
@friendships = @user.friendships.all
end
私のshow.html.erb:
<section>
<h1><%= @user.username %></h1>
<%= link_to "Arkadaşlarıma Ekle", friendships_path(:friend_id => @user), :method => :post,class: "btn btn-large btn-primary" %>
</section>
私のfriendships_controller:
class FriendshipsController < ApplicationController
before_filter :authenticate_user!
def create
@friendship = current_user.friendships.build(:friend_id => params[:friend_id])
if @friendship.save
flash[:notice] = "Arkadaşlara eklendi."
redirect_to root_url
else
flash[:error] = "Arkadaşlara Eklenemiyor."
redirect_to root_url
end
end
def destroy
@friendship = current_user.friendships.find(params[:id])
@friendship.destroy
flash[:notice] = "Arkadaşlarımdan kaldırıldı."
redirect_to current_user
end
end
だから私はusers_controllerにこのメソッドを追加しようとしましたが、それでも解決策はありません。修正を手伝ってもらえますか?
def friend?(other_user)
friendships.find_by_friend_id(other_user.id)
end
とリンクの前に
<% unless friend?(@user) %>
%= link_to "Arkadaşlarıma Ekle", friendships_path(:friend_id => @user), :method => :post,class: "btn btn-large btn-primary" %>
<%end %>
私のユーザーモデル:
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :token_authenticatable, :confirmable,
# :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
# Setup accessible (or protected) attributes for your model
attr_accessible :email, :password, :password_confirmation, :remember_me, :username
# attr_accessible :title, :body
has_many :topics
has_many :posts
has_many :friendships
has_many :friends, :through => :friendships
has_many :inverse_friendships, :class_name => "Friendship", :foreign_key => "friend_id"
has_many :inverse_friends, :through => :inverse_friendships, :source => :user
end
私の友情モデル:
class Friendship < ActiveRecord::Base
attr_accessible :friend_id, :user_id
belongs_to :user
belongs_to :friend, :class_name => "User"
validates :friend, :presence => true, :unless => :friend_is_self
def friend_is_self
user_id == friend_id ? false : true
end
end