Rails 5：Jquery自动完成
我在rails应用程序中实现了jquery自动完成function。
这是设置：
//= require jquery //= require rails-ujs //= require jquery-ui //= require bootstrap //= require_tree . items.js
$(document).ready(function() { $("#search").autocomplete({ source: "/search_suggestions", autoFocus: true, select: function(event, ui) { $(event.target).val(ui.item.value); $('#search').closest("form").submit(); return false; } }); });
这是模型items.rb中的搜索操作
def self.search(term) return where("0=1") if term !~ /\w{4}/ where("lower(title) LIKE lower(:term)", term: "%#{term}%") end
之后我创建了一个search_suggestions资源：
rails g resource search_suggestion term popularity:integer rails db:migrate
search_suggestions.rb
class SearchSuggestion < ApplicationRecord def self.terms_for(prefix) suggestions = where("term like ?", "#{prefix}_%") suggestions.order("popularity desc").limit(10).pluck(:term) end def self.index_items Item.find_each do |item| index_term(item.title) item.title.split.each { |t| index_term(t) } end end def self.index_term(term) where(term: term.downcase).first_or_initialize.tap do |suggestion| suggestion.increment! :popularity suggestion.save! end end end
search_suggestions_controller.rb
def index render json: SearchSuggestion.terms_for(params[:term]) end end
我创建了以下rake任务，以便根据search_suggestions.rb模型中的设置更新search_suggestion索引：
namespace :search_suggestions do desc "Generate search suggestions from items" task :index => :environment do SearchSuggestion.index_items end end
如果我输入rake search_sugegstions:index rake完成没有错误，但不会用当前项更新表。 例如，仍有一些项目已删除，并且仍显示在自动填充内。
任何想法为什么会这样？ 有没有更好的方法来实现这一点？
UPDATE1
rake search_suggestions：index时的log / development.log
对不起这个格式…日志很大，因此我无法正确形成它。
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