recommendations: add search form, allow searching by username.

app/controllers/recommended_posts_controller.rb

@@ -1,9 +1,9 @@
 class RecommendedPostsController < ApplicationController
   respond_to :html, :json, :xml, :js
 
-  def show
+  def index
     limit = params.fetch(:limit, 100).to_i.clamp(0, 200)
-    @recs = RecommenderService.search(params).take(limit)
+    @recs = RecommenderService.search(search_params).take(limit)
     @posts = @recs.map { |rec| rec[:post] }
 
     respond_with(@recs)

app/javascript/src/javascripts/posts.js.erb

@@ -434,7 +434,7 @@ Post.initialize_post_sections = function() {
       $("#comments").hide();
       $("#edit").hide();
       $("#recommended").show();
-      $.get("/recommended_posts.js", { post_id: Utility.meta("post-id"), max_recommendations: Post.MAX_RECOMMENDATIONS });
+      $.get("/recommended_posts.js", { search: { post_id: Utility.meta("post-id") }, limit: Post.MAX_RECOMMENDATIONS });
     } else {
       $("#edit").hide();
       $("#comments").hide();

app/logical/recommender_service.rb

@@ -17,27 +17,27 @@ module RecommenderService
     enabled? && user.favorite_count > MIN_USER_FAVS
   end
 
-  def recommend_for_user(user_id, limit = 50)
-    body, status = HttpartyCache.get("#{Danbooru.config.recommender_server}/recommend/#{user_id}", params: { limit: limit }, expiry: CACHE_LIFETIME)
+  def recommend_for_user(user, limit = 50)
+    body, status = HttpartyCache.get("#{Danbooru.config.recommender_server}/recommend/#{user.id}", params: { limit: limit }, expiry: CACHE_LIFETIME)
     return [] if status != 200
 
-    process_recs(body, uploader_id: user_id, favoriter_id: user_id)
+    process_recs(body, uploader: user, favoriter: user)
   end
 
-  def recommend_for_post(post_id, limit = 50)
-    body, status = HttpartyCache.get("#{Danbooru.config.recommender_server}/similar/#{post_id}", params: { limit: limit }, expiry: CACHE_LIFETIME)
+  def recommend_for_post(post, limit = 50)
+    body, status = HttpartyCache.get("#{Danbooru.config.recommender_server}/similar/#{post.id}", params: { limit: limit }, expiry: CACHE_LIFETIME)
     return [] if status != 200
 
-    process_recs(body, post_id: post_id)
+    process_recs(body, post: post)
   end
 
-  def process_recs(recs, post_id: nil, uploader_id: nil, favoriter_id: nil)
+  def process_recs(recs, uploader: nil, favoriter: nil)
     recs = JSON.parse(recs)
 
     posts = Post.where(id: recs.map(&:first))
-    posts = posts.where.not(id: post_id) if post_id
-    posts = posts.where.not(uploader_id: uploader_id) if uploader_id
-    posts = posts.where.not(id: Favorite.where(user_id: favoriter_id).select(:post_id)) if favoriter_id
+    posts = posts.where.not(id: post.id) if post
+    posts = posts.where.not(uploader_id: uploader.id) if uploader
+    posts = posts.where.not(id: favoriter.favorites.select(:post_id)) if favoriter
 
     id_to_score = recs.to_h
     recs = posts.map { |post| { score: id_to_score[post.id], post: post } }
@@ -46,14 +46,21 @@ module RecommenderService
   end
 
   def search(params)
-    if params[:user_id].present?
+    if params[:user_name].present?
+      user = User.find_by_name(params[:user_name])
+    elsif params[:user_id].present?
       user = User.find(params[:user_id])
+    elsif params[:post_id].present?
+      post = Post.find(params[:post_id])
+    end
+
+    if user.present?
       raise User::PrivilegeError if user.hide_favorites?
       max_recommendations = params.fetch(:max_recommendations, user.favorite_count + 500).to_i.clamp(0, 50000)
-      recs = RecommenderService.recommend_for_user(params[:user_id], max_recommendations)
-    elsif params[:post_id].present?
-      max_recommendations = params.fetch(:max_recommendations, 50).to_i.clamp(0, 200)
-      recs = RecommenderService.recommend_for_post(params[:post_id], max_recommendations)
+      recs = RecommenderService.recommend_for_user(user, max_recommendations)
+    elsif post.present?
+      max_recommendations = params.fetch(:max_recommendations, 100).to_i.clamp(0, 1000)
+      recs = RecommenderService.recommend_for_post(post, max_recommendations)
     else
       recs = []
     end

app/views/posts/partials/common/_secondary_links.html.erb

@@ -3,7 +3,7 @@
   <%= subnav_link_to "Upload", new_upload_path %>
   <%= subnav_link_to "Hot", posts_path(:tags => "order:rank", :d => "1") %>
   <% if RecommenderService.available_for_user?(CurrentUser.user) %>
-    <%= subnav_link_to "Recommended", recommended_posts_path(user_id: CurrentUser.id) %>
+    <%= subnav_link_to "Recommended", recommended_posts_path(search: { user_name: CurrentUser.name }) %>
   <% end %>
   <% unless CurrentUser.is_anonymous? %>
     <%= subnav_link_to "Favorites", posts_path(tags: "ordfav:#{CurrentUser.user.name}") %>

app/views/recommended_posts/_index.html.erb

@@ -0,0 +1,9 @@
+<section class="recommended-posts user-disable-cropped-<%= Danbooru.config.enable_image_cropping && CurrentUser.user.disable_cropped_thumbnails? %>">
+  <% if @recs.empty? %>
+    No recommendations found.
+  <% end %>
+
+  <% @recs.each do |rec| %>
+    <%= PostPresenter.preview(rec[:post], recommended: 100*rec[:score]) %>
+  <% end %>
+</section>

app/views/recommended_posts/_show.html.erb

@@ -1,3 +0,0 @@
-<section class="recommended-posts user-disable-cropped-<%= Danbooru.config.enable_image_cropping && CurrentUser.user.disable_cropped_thumbnails? %>">
-  <%= PostSets::Recommended.new(@posts).presenter.post_previews_html(self) %>
-</section>

app/views/recommended_posts/index.html.erb

@@ -0,0 +1,20 @@
+<div id="c-recommended-posts">
+  <div id="a-index">
+    <h1>Recommended Posts</h1>
+
+    <%= search_form_for(recommended_posts_path) do |f| %>
+      <%= f.input :user_name, label: "User", input_html: { value: params[:search][:user_name], "data-autocomplete": "user" } %>
+      <%= f.input :post_id, label: "Post", input_html: { value: params[:search][:post_id] } %>
+      <%= f.submit "Search" %>
+    <% end %>
+
+    <%= render "posts/partials/common/inline_blacklist" %>
+    <%= render partial: "index" %>
+  </div>
+</div>
+
+<%= render "posts/partials/common/secondary_links" %>
+
+<% content_for(:page_title) do %>
+  Recommended Posts - <%= Danbooru.config.app_name %>
+<% end %>

app/views/recommended_posts/index.js.erb

@@ -0,0 +1 @@
+$("#recommended").html("<%= j render "recommended_posts/index" %>");

app/views/recommended_posts/show.html.erb

@@ -1,16 +0,0 @@
-<div id="c-recommended-posts">
-  <div id="a-show">
-    <h1>Recommended Posts</h1>
-
-    <p>Based on your favorites, you may enjoy these posts. Favorite more posts to get more accurate results. These recommendations update every few hours.</p>
-
-    <%= render "posts/partials/common/inline_blacklist" %>
-    <%= render partial: "show" %> 
-  </div>
-</div>
-
-<%= render "posts/partials/common/secondary_links" %>
-
-<% content_for(:page_title) do %>
-  Recommended Posts - <%= Danbooru.config.app_name %>
-<% end %>

app/views/recommended_posts/show.js.erb

@@ -1 +0,0 @@
-$("#recommended").html("<%= j render "recommended_posts/show" %>");

config/routes.rb

@@ -241,7 +241,7 @@ Rails.application.routes.draw do
   get "reports/upload_tags" => "reports#upload_tags"
   get "reports/down_voting_post" => "reports#down_voting_post"
   post "reports/down_voting_post_create" => "reports#down_voting_post_create"
-  resource :recommended_posts, only: [:show]
+  resources :recommended_posts, only: [:index]
   resources :saved_searches, :except => [:show] do
     collection do
       get :labels