Add Algolia filtering (#72)

* Add tabs for chronological filtering

* Add Algolia filtering

app/assets/javascripts/initializers/initScrolling.js.erb

@@ -105,12 +105,22 @@ function algoliaPaginate(tag){
   if (tag && tag.length > 0) {
     filters.push(tag);
   }
-  articlesIndex.search("*", {
+
+  var searchObj = {
       hitsPerPage: 15,
       page: nextPage,
       attributesToHighlight: [],
       tagFilters: filters,
-  })
+  }
+
+  var homeEl = document.getElementById("index-container");
+  if (homeEl.dataset.feed === "base-feed") {
+  } else if (homeEl.dataset.feed === "latest") {
+  } else {
+    searchObj["filters"] = ('published_at_int > ' + homeEl.dataset.articlesSince);
+  }
+
+  articlesIndex.search("*", searchObj)
   .then(function searchDone(content) {
     nextPage += 1;
     insertArticles(content.hits);

app/assets/javascripts/initializers/initializeFetchFollowedArticles.js.erb

@@ -23,21 +23,24 @@ function algoliaFollowedArticles(){
       var client = algoliasearch('<%= ENV["ALGOLIASEARCH_APPLICATION_ID"] %>', '<%= ENV["ALGOLIASEARCH_SEARCH_ONLY_KEY"] %>');
       var index = client.initIndex('ordered_articles_<%= Rails.env %>');
       
+      var searchObj = {
+          hitsPerPage: 20,
+          page: "0",
+          attributesToHighlight: [],
+          tagFilters: [user.followed_tag_names.concat(followedUsersArray)],
+      }
+      
       var homeEl = document.getElementById("index-container");
       if (homeEl.dataset.feed === "base-feed") {
         articlesIndex = client.initIndex('ordered_articles_<%= Rails.env %>');
       } else if (homeEl.dataset.feed === "latest") {
         articlesIndex = client.initIndex('ordered_articles_by_published_at_<%= Rails.env %>');
       } else {
+        searchObj["filters"] = ('published_at_int > ' + homeEl.dataset.articlesSince);
         articlesIndex = client.initIndex('ordered_articles_by_positive_reactions_count_<%= Rails.env %>');
       }
-      
-      index.search("*", {
-          hitsPerPage: 20,
-          page: "0",
-          attributesToHighlight: [],
-          tagFilters: [user.followed_tag_names.concat(followedUsersArray)],
-      })
+
+      index.search("*", searchObj)
       .then(function searchDone(content) {
         var insertPlace = document.getElementById("article-index-hidden-div");
         if (insertPlace) {

app/models/article.rb

@@ -114,6 +114,9 @@ class Article < ApplicationRecord
       attributes :title, :path, :class_name, :comments_count,
         :tag_list, :positive_reactions_count, :id, :hotness_score,
         :readable_publish_date
+      attribute :published_at_int do
+        published_at.to_i
+      end
       attribute :user do
         { username: user.username,
           name: user.name,

app/views/articles/index.html.erb

@@ -194,7 +194,9 @@
 <div class="home <%= "sub-home" if (@user || @tag || @query)%>" id="index-container"
   data-params="<%= params.to_json(only: [:tag,:username,:q]) %>" data-which="<%=@list_of%>"
   data-algolia-tag="<%= @user ? "#{@user.class.name.downcase}_#{@user.id}" : nil || @tag %>"
-  data-feed="<%= params[:timeframe] || "base-feed"%>">
+  data-feed="<%= params[:timeframe] || "base-feed"%>"
+  data-articles-since="<%= Timeframer.new(params[:timeframe]).datetime.to_i %>"
+  >
   <%= render "articles/sidebar" %>
   <div class="articles-list" id="articles-list">
     <% if @home_page || @tag %>