[ruby] ruby_topics = [ 'Benchmark memory when running a big query or a complex process with Ruby(Especially if you are using Heroku)', 'See how to set up a project to use a database and ActiveRecord in plain Ruby', 'Export a giant CSV file...
[ruby] your_model = User column_names = your_model.column_names - ['created_at', 'updated_at'] # we can ignore some unimportant fields backup_array = [] your_model.find_each(batch_size: 500) do |your_record| p_hash = {} column_names.each do |col_name| p_hash.merge!("#{col_name}" => your_record.send(col_name)) end backup_array << p_hash end [/ruby] This will create an array of...
I was having troubles after switching between branches, here is the basic troubleshooting trick. [caption id="attachment_1394" align="alignnone" width="700"] problems with gem depedencies[/caption] As simple as that, thanks for reading Keep reading, coding and relax, peace H....
My test suite is failing due to the latest changes in Google Chrome version (61.xx), seems like something has changed and now you need to manually scroll right/bottom/top if you are using Capybara RSpec or cucumber with selenium driver because if the element is not...
Another name for this post would be: How to test async store.dispatch react redux actions. Seems like there is a lot of confusion about this topic, so I would show you how easy is to test that kind of actions using JEST, the important thing here...
Working recently on a feature for searching I found out that sometimes when I'm creating complex queries we forget to take advantages of ActiveRecord and as a result our SQL queries could be vulnerable to SQL injection, for example, let's say we have a dynamic...
I have seen many times that I forget to lazy load associations when doing queries and that generates n + 1 queries, in order to avoid and reduce these errors most of the time I add some scenarios in rspec that prevents `n + 1...
How do I allow my camera in a Cucumber scenario in Chrome? I was looking for a way to test a WebRtc feature and trying to fake the camera in order to do so, it turns out that it was pretty easy when using Chrome as...
I just realized that the facebook authentication is failing, this is the error I get in heroku: [shell] 2017-04-20T16:23:30.596766+00:00 app[web.1]: I, [2017-04-20T16:23:30.596716 #7] INFO -- omniauth: (facebook) Callback phase initiated. 2017-04-20T16:23:30.647209+00:00 app[web.1]: E, [2017-04-20T16:23:30.647151 #7] ERROR -- omniauth: (facebook) Authentication failure! invalid_credentials: OAuth2::Error, : [/shell] and the way to...
Have you used JSONB from Postgres recently? I'm not going to talk about it but I think it's pretty awesome and powerful, and I'm going to show some of my findings that I have made so far and actually was inspired by: https://www.reddit.com/r/PostgreSQL/comments/2u6ah3/how_to_use_json_to_recordset_on_json_stored_in_a/ Let's get...
