If I understand correctly, you want to make the distribution of users by role. You have a few options for this:Write in a separate column of the same table (please add the role column to the table)Make a separate table of roles and add an external key to the user table. I mean, there's a role column in the users' table. This will allow you to dynamically add to or perform the role without touching the code.Make a separate table of roles and a connecting table, e.g. users_roles and connecting relationships http://rusrails.ru/active-record-associations#the-has-many-through-association

To the excheon update It didn't even work.form_for accepts a whole range of parameters, actually. But almost everything is unnecessary.key to the shape parametersURL, to which the form should be sent ( default current page)HTTP-methodGET/POST/PUTetc., default POST)(and a number of others, but others are not relevant)Many of them can be transferred in shape "Here's the object of the model, deal with yourself.":The key will be the model name. snake_case and the only number.URL: if .new?♪ модели_path relevant resourceotherwise (if) .persisted?) edit_модель_path(объект) relevant resourceA similar choice, POST or PUT respectively.Sometimes it makes sense to ask the parameters manually:form_for :ключ, url: адрес, method: http_метод All you've got is a symbol. Only key♪URL and method default for uniforms in general (current page and method POST)But they usually use the object of the model. For form to be found Модель.newedited, edited object, respectively.

Try this:current_user.courses.where(tickets: {status: 'paid'})

Result of request DISTINCT ON The fields identified in the field will always be classified in the first place DISTINCT ON Because of the restriction already mentioned. You can't get rid of it.It is only possible to sort the results of this request into a post-actum. You can do it in Ruby, but you can do it at the OBD level:Модель.select(Arel.star).from(подзапрос, :алиас).order(:position) # выбрать всё* из подзапроса "алиас" с сортировкой по "position" It's likely that the base will be shorter than Ruby. But you should think if it's better to show something else that's easier to get. For example, can data be modified in such a way that DISTINCT ON I didn't need it.Let's just say we can keep in the id post some sort of "electoral record" that delivers through a banal. JOIN to posts. The uniqueness of the posts will be derived from the data structure: a condition for the equality of the primary key may give not more than one recording. And every post can have not more than one meaning. That's right.♪ It's a base point. * (whether it's all the same and you can use it. .select("*")) ActiveRecord's making requests with the help of Arel, and it's his wildcard literal.

I got the question and I found the answer.Added to the main request .select("addresses.*, services.search_priority") And it's all working properly.

You're not coming in from the end, you're gonna miss model Issue and you're gonna make your validation check. Your mistake will result in standard error_messages_for in redmine.

Usually, using a Fremworth without good language skills is a bad idea, but in the case of Rails, it's a little different.The fact is, the Fremvorke itself is very often used by DSL, and it's not important to use Ruby knowledge.I think you can start studying Ruby on Rails at once, even if there's no hard Ruby knowledge. Although, of course, you don't have to do real work without them.

Delayed implementation of long-standing actionsOnce you're able to create a separate flow, you don't have to complete this operation. before send a response to the client. And it's for this to be done. priorities♪ As a canonal example of such actions, e-mails are usually sent, but you have some other nature that is not less appropriate.They have control over how many of these heavy tasks can be carried out in parallel and the number of queues may be set so that the system does not fall. Moreover, this number can be changed directly during work (this is more a matter of administration).Such turns are usually structured as follows:Got it. Repository of tasks♪ This may be a dedicated communications server (RabbitMQ), or may be a general-purpose data repository (Redis, PostgreSQL). There are tasks to be carried out.Got it. server (Worker, working process) that takes one of the records repository of tasks in line (a order may be imposed on the data repository but not necessarily) and fulfils what is written.Got it. Clientwhich adds the tapes Repository of tasks♪From modern reality from the Ruby ecosystem, I can say: https://github.com/rails/rails/tree/master/activejob - your own adapter. http://api.rubyonrails.org/classes/ActiveJob/QueueAdapters.html showed up in Rails 4.2. It is predicted that almost all functionality specific to specific realities is deep buried or inaccessible. https://github.com/mperham/sidekiq - the most popular option. Functions stored Redis♪ Targets are carried out specifically for this purpose. Supports nitty people like assignments for a given time. Regrettably, it is true that the warriors take tasks from the vault and wipe them out there, so that one task cannot capture a number of warriors. If the process that performed the task fell down, the task would disappear. The solution is in a feeble version, but you understand. https://github.com/gocardless/hutch - A little known. In fact, it's a simplified client. RabbitMQthe message server. Simplified, i.e. opportunities, absolute minimum and communications are exchanged through the one topic exchange♪ Topic exchange It is not only possible to use the task line. Hutch is therefore not positioned as a set of tasks, but as a means of communication between services. https://github.com/chanks/que - a pretty new and interesting version. The tasks are stored in a separate postgreSQL table. May use all ACID guarantees on an equal footing with the rest of the data and change in transactions with them. The "Zawat" of the tasks is done through the advisory lock(s) on which the OBD is not aware, the annex may clearly indicate that it wishes to treat them somehow. The locking shall be recorded at the level of the connection in the operational memory. If the compound dies, the lock will fall and the record will be available to others. There is also a problem: the entry of Que roarers with access to OBD through pgbouncer is not possible.There are others, of course. We can focus. http://api.rubyonrails.org/classes/ActiveJob/QueueAdapters.html ♪

Oh... wrong you've roughed up. Everything.♪Assets are assembled before production starts and they are common to all. It is pointless to have any data in place that can be different from one page or may change after the server is launched. If you want a change of data, you're going to do the vogue. It's better to have a separate code and a separate data source in JSON, to which the code will be applied.ERB is only processed when at the end of the file name .erbe.g. fuel_chart.js.erb♪<%= JSON.parse(@json_stata_l_na_100_km) %> I'm not gonna give you a valid JSON. It's sorting a line in Ruby's data structure. If you already have a defined data structure, you don't have to evaporate it.JSON.dump)

You have a method. render in a vortex looking for a template _chatroom.html.erb♪ It's not necessary.<h1>Chatrooms</h1> <div> <%= @chatrooms %> </div>

<%= f.search_field :check_lteq, id: 'hidden' %> _ <= assigned value#=> SELECT `products`.* FROM `products` WHERE (`products`.`price` <= 1000) _gteq looking for everything >= assigned value# => "SELECT items.* FROM items WHERE items.price >= 1000)"

Why are you making animal connections to the table of role linkages - users, not the table with users? The user can easily lose his role.We can do this:rails generate model User name rails generate model Role name # в миграции можно добавить внешние ключи и индексы rails generate migration CreateJoinTableUserRole user role rails generate model Pet name user:references class User < ApplicationRecord has_and_belongs_to_many :roles end class Role < ApplicationRecord has_and_belongs_to_many :users end class Pet < ApplicationRecord belongs_to :user end This will create the following structure.

If the type of your application is standalone, redirect_uri should be equal. https://oauth.vk.com/blank.html Due from official document VK API - https://vk.com/dev/implicit_flow_user?f=1.1.%20Redirect%20uri

click bundle events only for the elements satisfying the selter, which are currently on the page.I can assume that the problem is that in the sabmite form, HTML is being updated, which means that old bindes will no longer be used for new elements. That's what makes default behavior, and that's a reversal. Switching the empty link means updating the page. On the updated page, the events will be reinvigorated until the HTML update.If events are to be intercepted for new elements, we need to use them. on:$('body').on('click', '.edit-answer-link', function(e) { e.preventDefault() $(this).hide() answer_id = $(this).data('answerId') $('form#edit-answer-' + answer_id).show() }); https://stackoverflow.com/questions/1359018/in-jquery-how-to-attach-events-to-dynamic-html-elements ♪

Go straight to the point. answer_pathtransmitting the answer:link_to 'delete', answer_path(answer), method: :delete Where? answer --id response

That's how it's supposed to look:Hemom may be used to verify the rights to the substance. https://github.com/elabs/pundit ♪# app/policies/post_policy.rb class PostPolicy < ApplicationPolicy def update? user.admin? end end app/controllers/posts_controller.rb class PostsController < ApplicationController before_action :set_and_authorize_post, only: [:edit, :update] def edit end def update if @post.update(post_params) ... else render :edit end end private def set_and_authorize_post @post = Post.find(params[:id]) authorize @post end end

Watching SWAP files like серебряную пулю не стоит♪ Everything starts to slow down when swap is activated because memory is forgotten and written on the CD, which is why memory is lacking for the rest of the resources. We should watch where memory goes. Consideration should be given to the integrated optimization of the application and monitoring. The number of hems is not 40. It would be nice to see Gemfile himself.In such a situation, it should be thought that it would be good for gems to be scattered by group. test, develpmentalways have to be moved.Look at the correct launch of Cron / Jobs / Workers, it must be borne in mind that a thief should transfer Id to the essence that will be processed in another process.It's worth considering using asynchronous tasks. redisto keep the base down, the redisclosure is easy, and it doesn't eat much.Of course not to forget the simple optimization of N + 1 queries, the number of pools.And by goodness, I'd also advise you to try a Puma server with works and tracks 2 to 2, which is better. Still, the bet does not make the app.

Heroku does not provide a storage space for downloadable files. You've only got 300ms for slug (prepared for launch) and a folder/tmp for kesha storage and fresh loaded files. This file is purified periodically, and your files loaded into it are missing.Fissile storage can be used https://aws.amazon.com/ru/s3/ by connecting him to a gem application fog or aws-s3♪ Look for S3 instructions through these hems with your file loader.carrierwave♪ paperclip)

No.Because the application is fine.From the point of view of the DS, it's not very good.Symptoms are very similar. Lack of operational memory (no conclusion and single) killed after completion). When memory remains critical, it works. https://linux-mm.org/OOM_Killer which, by the off-line algorithm, threatens some work process than frees its resources. It's a bad situation.in normal work, it should not arise at all, and if it occurs, measures must be taken.Only one way to deal with this is to prevent the lack of operatives. Either by broadening the available hug (not necessarily physical OPC, and can be pumped.) or by reducing its consumption, your choice.

Indeed, the erroneous report already contained information on what had gone wrong. Change the protocol from https in urle.require 'open-uri' open('https://pragprog.com') do |f| puts f.read.scan(/<img alt=".?" src="(.?)"/m).uniq[0,3] end