From a08a889e7dc930771ff02b2bd584f63cfc4dad55 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Victor=20Geonizeli?= <joao.geonizeli@gmail.com>
Date: Mon, 28 Feb 2022 13:45:28 -0300
Subject: [PATCH] add search by terms on posts

---
 Gemfile                                      | 6 +++---
 Gemfile.lock                                 | 4 ++++
 app/controllers/posts_controller.rb          | 2 +-
 app/models/post.rb                           | 8 ++++----
 app/services/posts_query_resolver_service.rb | 4 ++++
 5 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/Gemfile b/Gemfile
index 8224856..6a028cd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,11 +2,12 @@ source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 ruby "3.1.1"
+
 gem "rails", "~> 7.0.2", ">= 7.0.2.2"
 gem "pg", "~> 1.1"
 gem "puma", "~> 5.0"
 gem "jbuilder"
-
+gem "pg_search", "~> 2.3"
 gem "bootsnap", require: false
 
 group :development, :test do
@@ -14,6 +15,5 @@ group :development, :test do
 
   gem "rspec-rails", "~> 5.1"
   gem "factory_bot_rails", "~> 6.2"
+  gem "faker", "~> 2.19"
 end
-
-gem "faker", "~> 2.19"
diff --git a/Gemfile.lock b/Gemfile.lock
index 2a9fd44..fa71a15 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -124,6 +124,9 @@ GEM
     nokogiri (1.13.3-x86_64-linux)
       racc (~> 1.4)
     pg (1.3.3)
+    pg_search (2.3.6)
+      activerecord (>= 5.2)
+      activesupport (>= 5.2)
     puma (5.6.2)
       nio4r (~> 2.0)
     racc (1.6.0)
@@ -196,6 +199,7 @@ DEPENDENCIES
   faker (~> 2.19)
   jbuilder
   pg (~> 1.1)
+  pg_search (~> 2.3)
   puma (~> 5.0)
   rails (~> 7.0.2, >= 7.0.2.2)
   rspec-rails (~> 5.1)
diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 0e7f1bf..68722ef 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -29,7 +29,7 @@ class PostsController < ApplicationController
   private
 
   def query_params
-    params.permit(:scope) || {}
+    params.permit(:scope, :terms)
   end
 
   def post_params
diff --git a/app/models/post.rb b/app/models/post.rb
index 6b55839..f34a55c 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -1,15 +1,15 @@
 class Post < ApplicationRecord
+  include PgSearch::Model
+
   belongs_to :user
   belongs_to :quoted_post, optional: true, class_name: 'Post'
 
   validates :content, length: { maximum: 777 }
   validates :content, presence: true, unless: :repost?
-
   validate :user, :limit_of_post_per_day
 
-  scope :by_user_follows, ->(user) {
-    where(user_id: user.following_ids)
-  }
+  pg_search_scope :by_terms, against: :content
+  scope :by_user_follows, ->(user) { where(user_id: user.following_ids) }
 
   def repost?
     kind == :quoted_post
diff --git a/app/services/posts_query_resolver_service.rb b/app/services/posts_query_resolver_service.rb
index 91d52a8..afe86eb 100644
--- a/app/services/posts_query_resolver_service.rb
+++ b/app/services/posts_query_resolver_service.rb
@@ -17,6 +17,10 @@ class PostsQueryResolverService
       scope = scope.by_user_follows(current_user)
     end
 
+    if filter[:terms]
+      scope = scope.by_terms(filter[:terms])
+    end
+
     scope
   end
 end
\ No newline at end of file