Since Arel got incorporated by Rails, docs have gone away and I heard multiple complaints on the Internet about how this API is now “hidden” and we must either rely on AR or raw SQL. But there are many projects that rely on it and many things you can do using it. It would be nice if Arel had a bet…

@tenderlove here’s a rough example of how I compose query objects together. It’s probably missing some stuff and some of these methods I have in mixins, etc. class MyQuery attr_reader :company_id, :other_query_object delegate :to_sql, to: :query def initialize(company_id, other_query_object:…

[image] tenderlove: what is your main entry point to getting Arel objects? I think most people use arel_table , but I don’t know for sure. I use Model[:column] extensively, provided by the arel-helpers gem (which I found out about at RailsConf years and years ago). Most of the day-to-day Are…

[image] tenderlove: @flanger001 what is your main entry point to getting Arel objects? My main entry is .arel_table as you said, e.g. Task.arel_table. Sometimes I use the #arel method on a relation: [1] pry(main)> Task.all.arel => #<Arel::SelectManager:0x00007ff1cc026cd0 @ast= #<Arel::Nod…

I will add that one thing I hope to work with @rafaelfranca on here is exposing some more of this within ActiveRecord. The reason we reach to Arel is because ActiveRecord can’t do some of the stuff we want, so we can reduce the need for Arel if we can expose things through ActiveRecord.

If not typing Arel is a goal, what should be done about the requirement to type Arel.sql to escape deprecation notices for SQL fragments in things like order()?

I don’t know yet. Maybe we can’t eliminate it 100%, but it’s a goal to strive for :smile:

Nice. We should steal stuff from this gem and put it in Rails. Thank you.

Great, thanks! Arel::Nodes::Count.new(Arel.star) can be rewritten as Arel.star.count. We probably need an as factory method on Arel::Table. We have this , but it doesn’t seem to be on the Table class, and I’m not sure if converting the parameter to a sql literal is correct. Would you mind investi…

Awesome, thank you! Let’s figure out how to get rid of the references to “Arel”. Arel has some builder methods like outer_join so we can eliminate the reference to Arel::Nodes::OuterJoin. I think the PR here will help us eliminate some of the Arel::Table.new calls. Anyway, I think we just need t…

What has happened to Arel

A May Of WTFs

tenderlove (Aaron Patterson) May 8, 2020, 7:34pm 38

I’ve made a PR so we can discuss the [] feature. https://github.com/rails/rails/pull/39198

Default AR order behaviour

Topic		Replies	Views
ActiveRecord interface to Arel is awkward, requires find_by_sql(query.to_sql) rubyonrails-core	23	1124	June 5, 2012
Is Arel a public API or not? Arel.sql seems so lonely rubyonrails-talk	3	874	October 24, 2023
Proposal for public Arel API rubyonrails-core activerecord	1	90	May 27, 2026
Arel - clone bug (and fix), feature requests rubyonrails-core	12	487	April 28, 2011
Add `ActiveRecord::Base#[]` rubyonrails-core feature	6	728	September 8, 2021

What has happened to Arel

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