Number of posts per page is now configurable through .env

.env-example

@@ -5,4 +5,5 @@ POSTGRES_PASSWORD=yourpasswordhere
 
 APP_NAME="You App Name Here"
 
-EMAIL_CONFIRMATION=0
+EMAIL_CONFIRMATION=0
+POSTS_PER_PAGE=15

app/javascript/constants/index.js

@@ -0,0 +1 @@
+export const POSTS_PER_PAGE = parseInt(process.env.POSTS_PER_PAGE);

app/javascript/reducers/postsReducer.ts

@@ -5,6 +5,8 @@ import { FiltersState } from './filtersReducer';
 import postReducer from './postReducer';
 import filtersReducer from './filtersReducer';
 
+import { POSTS_PER_PAGE } from '../constants';
+
 import {
   PostsRequestActionTypes,
   POSTS_REQUEST_START,
@@ -60,7 +62,7 @@ const postsReducer = (
           :
           [...state.items, ...action.posts.map(post => postReducer(undefined, postRequestSuccess(post)))],
         page: action.page,
-        haveMore: action.posts.length === 15,
+        haveMore: action.posts.length === POSTS_PER_PAGE,
         areLoading: false,
         error: '',
       };

app/models/post.rb

@@ -6,7 +6,7 @@ class Post < ApplicationRecord
 
   validates :title, presence: true, length: { in: 4..64 }
 
-  paginates_per 15
+  paginates_per Rails.application.posts_per_page
 
   class << self
     def find_with_post_status_in(post_statuses)

config/application.rb

@@ -23,5 +23,9 @@ module App
     def email_confirmation?
       ENV["EMAIL_CONFIRMATION"] == "1"
     end
+
+    def posts_per_page
+      ENV["POSTS_PER_PAGE"].to_i
+    end
   end
 end