Add follow / unfollow button

app/assets/javascripts/relationships.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/relationships.sass

@@ -0,0 +1,3 @@
+// Place all the styles related to the Relationships controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: https://sass-lang.com/

app/controllers/relationships_controller.rb

@@ -0,0 +1,15 @@
+class RelationshipsController < ApplicationController
+   def create
+    profile = Profile.find(params[:followed_id])
+    authorize Relationship
+    current_user.follow(profile)
+    redirect_to profile
+  end
+
+  def destroy
+    profile = Relationship.find(params[:id]).followed
+    authorize profile
+    current_user.unfollow(profile)
+    redirect_to profile
+  end
+end

app/controllers/tokens_controller.rb

@@ -43,7 +43,10 @@ class TokensController < ApplicationController
         @token.standard = :icrc1
         @token.transfer_fee = metadata.lines[2].split[7].to_i
         @token.decimals = metadata.lines[5].split[7].to_i
-        @token.logo_url = metadata.lines[9].split("\"")[1]
+        begin
+          @token.logo_url = metadata.lines[9].split("\"")[1]
+        rescue
+        end
         @token.name = metadata.lines[3].split("\"")[3]
         total_supply = `dfx canister --network ic call #{@token.canister_id} icrc1_total_supply 2>&1`
         @token.total_supply = total_supply.split[0][1..-1].to_i/(10.0**@token.decimals)

app/helpers/relationships_helper.rb

@@ -0,0 +1,2 @@
+module RelationshipsHelper
+end

app/policies/relationship_policy.rb

@@ -0,0 +1,55 @@
+class RelationshipPolicy
+  attr_reader :user, :relationship
+
+  def initialize(user, model)
+    @user = user || User.new
+    @relationship = model
+  end
+
+  class Scope
+    def initialize(user, scope)
+      @user  = user
+      @scope = scope
+    end
+
+    def resolve
+      if user.admin?
+        scope.all
+      else
+        scope.all
+      end
+    end
+
+    private
+
+    attr_reader :user, :scope
+  end
+
+  def index?
+    true
+  end
+
+  def show?
+    true
+  end
+
+  def create?
+    @user.admin? || @user.signed_in?
+  end
+
+  def new?
+    @user.admin? || @user.signed_in?
+  end
+
+  def edit?
+    @user.admin? || @user.id == @relationship.follower_id
+  end
+
+  def update?
+    @user.admin? || @user.id == @relationship.follower_id
+  end
+
+  def destroy?
+    @user.admin? || @user.id == @relationship.follower_id
+  end
+end

app/views/profiles/_follow.html.haml

@@ -0,0 +1,3 @@
+= form_for(current_user.active_relationships.build) do |f|
+  %div= hidden_field_tag :followed_id, @profile.id
+  = f.submit "Follow"

app/views/profiles/_follow_form.html.haml

@@ -0,0 +1,5 @@
+#follow_form
+  - if current_user.following?(@profile)
+    = render 'unfollow'
+  - else
+    = render 'follow'

app/views/profiles/_unfollow.html.haml

@@ -0,0 +1,3 @@
+= form_for(current_user.active_relationships.find_by(followed_id: @profile.id), |
+  html: { method: :delete }) do |f|                                          |
+  = f.submit "Unfollow"

app/views/profiles/show.html.haml

@@ -3,6 +3,7 @@
     = @profile.name
   - if policy(@profile).edit?
     = link_to 'Edit', edit_profile_path(@profile)
+  = render 'follow_form' if current_user.signed_in?
 %p
   = @profile.summary
 

config/routes.rb

@@ -1,6 +1,10 @@
 Rails.application.routes.draw do
   resources :social_links
-  resources :profiles
+  resources :profiles do
+    member do
+      get :followers
+    end
+  end
   resources :tokens do
     member do
       get 'refresh'
@@ -70,4 +74,5 @@ Rails.application.routes.draw do
       get :following
     end
   end
+  resources :relationships,       only: [:create, :destroy]
 end

spec/helpers/relationships_helper_spec.rb

@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+# Specs in this file have access to a helper object that includes
+# the RelationshipsHelper. For example:
+#
+# describe RelationshipsHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       expect(helper.concat_strings("this","that")).to eq("this that")
+#     end
+#   end
+# end
+RSpec.describe RelationshipsHelper, type: :helper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/requests/relationships_spec.rb

@@ -0,0 +1,7 @@
+require 'rails_helper'
+
+RSpec.describe "Relationships", type: :request do
+  describe "GET /index" do
+    pending "add some examples (or delete) #{__FILE__}"
+  end
+end