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| == Application Setup ==
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| * create project with
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| <pre>
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| rails new my_project
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| </pre>
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| * add gem dependencies to <code>Gemfile</code> at the root level
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| * update <code>config/application.rb</code> to load needed dependencies and update defaults
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| * double-check <code>/config/initializers</code> and <code>/config/environments</code>
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| Files in <code>lib/</code> are not automatically loaded, so you need to <code>require</code> them.
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|
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| In <code>config/environments/development.rb</code>, set
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| <pre>
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| config.action_mailer.perform_deliveries = false
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| </pre>
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| No delivery attempt is performed, but you can still see the mail in the log file to check it looks good
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| == Other rails commands ==
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| <pre>
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| rails console
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| rails server
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| rails runner
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| </pre>
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|
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|
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| == Routing ==
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| Configured in <code>config/routes.rb</code>
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| <pre>
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| match 'products/:id' => 'products#show'
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| </pre>
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| The url <nowiki><code>http://localhost:3000/products/8</code></nowiki> will be mapped to the <code>show</code> action of the <code>products</code> controller with <code>params[:id]</code> set to 8
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|
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| == Logging ==
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| Use these in models, views, controllers to send timestamped messages to the log.
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| <pre>
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| logger.debug "debug message"
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| logger.info "info message"
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| logger.warn "something bad"
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| logger.error "something broke"
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| logger.fatal "application dead"
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| </pre>
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