- Launching Rails console 1:04
- Launch the Console 1 objective
- Rails Console: Reading Model Objects 1:57
- Read Operations 3 objectives
- Rails Console: Creating Model Objects 2:10
- Create Operations 3 objectives
- Rails Console: Updating Model Objects 1:22
- Update Operations 3 objectives
- Rails Console: Deleting Model Objects 1:21
- Destroy Operations 2 objectives
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Launching Rails console
1:04We've seen how to use the Web interface to create new model objects. Now, I want to show you how to do the same from the terminal, using the "Rails console".
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We've seen how to use the web
interface to create new model objects.
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Now I wanna show you how to do the same
from the terminal using the Rails console.
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The Rails console is useful when you need
to do an operation on many model objects
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at once, or to look at model attributes
that you haven't yet added to your views.
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We've seen the Rails server and
generate sub commands already.
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Console is another sub command.
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So let's make sure the Rails
server is stopped and
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we're back at our system prompt.
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Then we type bin/rails
console in our terminal.
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You'll leave your system prompt and
be taken to a prompt provided by Ruby.
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Here you can type Ruby expressions.
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They'll be evaluated and
you'll be shown the result.
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If you've used Ruby's IRB command before,
it works just the same way.
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The difference is you have your
full Rails environment loaded,
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including your model classes.
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Your model class is connected
to your database so
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you can create, read, update,
or delete model data.
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Let's try out all the CRUD operations
using our post model class.
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