mediter

register sidebar in functions.php
registering a sidebar is just defining a container

if( function_exists('register_sidebar') ) {
      register_sidebar(array(
      'name' => 'spage',
      'before_widget' => '',
      'after_widget' => '',
      'before_title' => '<h3>',
      'after_title' => '</h3>'

mediter

# you can call #sum iterator on it:

numbers = [1, 2, 3, 4, 5]

numbers.sum
# => 15


# N.B: In Ruby versions < 2.4, sum didn't exist. The idiomatic way to get the same result was with #reduce:

mediter

for-loop with echo

for model in "artists" "galleries" "paintings"
do
    mkdir -p $(echo views/api/v1/$model)
    for verb in "index" "show"
    do
        touch $(echo views/api/v1/$model/$verb.json.jbuilder)
 done

mediter

rails db:rollback STEP=1

# Is a way to do this, if the migration you want to rollback is the last one applied. You can substitute 1 for however many migrations you want to go back.

# For example:

rails db:rollback STEP=5
# Will also rollback all the migration that happened later (4, 3, 2 and also 1).

# In order to rollback a specific migration use: