stevecondylios

How to make a contact form in rails 6

This is a quick walk through on how to:

1. make a contact form in rails 6,
2. test it locally, and
3. move it into production using heroku and the MailGun addon

This uses the free heroku and mailgun plans. If you get stuck on any part, check the full code here.

esteedqueen

So, you just cloned an existing project's repo and you run bundle install but you got the error: rbenv: version x.x.x is not installed....

What the issue means? The project uses a specific ruby version that you do not have on your system.

Here's how to fix it:

• Install the Ruby build for the specified version using:

rbenv install x.x.x

jacklorusso

"workbench.colorCustomizations": {
    // Contrast Colors - The contrast colors are typically only set for high contrast themes. If set, they add an additional border around items across the UI to increase the contrast.
    "contrastActiveBorder": "",
    "contrastBorder": "",
    // Base Colors
    "focusBorder": "",
    "foreground": "",
    "widget.shadow": "",
    "selection.background": "",
    "descriptionForeground": "",

gunjanpatel

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

Atlas7

This blog post has helped me clean up my postgres development environment on Mac. So making a copy!

How completely uninstall PostgreSQL 9.X on Mac OSX

This article is referenced from stackoverflow:

If installed PostgreSQL with homebrew , enter brew uninstall postgresql

If you used the EnterpriseDB installer , follow the following step.

tlowrimore

class V1::AddressBooksController < V1::BaseController
  def create
    @address_book = AddressBook.new address_book_params
    unless @address_book.save
      errors = @address_book.errors.to_hash(true)
      render status: 422, json: { errors: errors }
    end
  end

  private

hopsoft

# lib/tasks/db.rake
namespace :db do

  desc "Dumps the database to db/APP_NAME.dump"
  task :dump => :environment do
    cmd = nil
    with_config do |app, host, db, user|
      cmd = "pg_dump --host #{host} --username #{user} --verbose --clean --no-owner --no-acl --format=c #{db} > #{Rails.root}/db/#{app}.dump"
    end
    puts cmd

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

alexpchin

Alex's Rails Cheat Sheet

I think the most confusing thing that I have found about Ruby on Rails so far has been the transition from (trying to) write code myself to the use of the fabled "Rails Magic". So, to help my own understanding of a few core Ruby on Rails concepts, I have decided to write something on what I think is a CRITICAL topic... the idea of Convention over Configuration and why (in my mind) it is the most important thing that helps Rails become magic!

(This may be a topic that we cover in more detail in class but as I said, I'm writing this for my own understanding... I hope it helps someone else understand things too... Perhaps you can give me a hand when I'm crying next week!)

##Convention over configuration ###What does this "actually" mean...

jczaplew

Heroku + Github + Sensitive Data

Scenario: You deployed a Heroku project that contains sensitive data (password, API key, etc) but you want to share it on Github.

Problem: You need to commit all files necessary for the application to run on Heroku. However, pushing this to Github would reveal the sensitive info.

Solution: Have a production branch (for this example, master will be the production branch) and a Github branch. The latter contains a different .gitignore that ignores the sensitive files.