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Next, let's look at update
operations in the console.

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After retrieving a model object from
the database, we can modify the object and

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update the database record.

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This is much the same as working
with a new model object.

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We just assign new values, the existing
object's attributes and call save on it.

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Let's suppose we wanted
to update a post title.

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As before, we can get a collection of all
the posts objects by calling Post.all.

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We can look at the ID attribute
of the one we want to modify and

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then retrieve it by passing
the ID to the find method.

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We'll assign the object we get back
to a variable, post = Post.find(3).

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As before we can set the attributes
the same way we would on any other

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Ruby object.

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So let's change the title.

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Post.title =" I've been

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updated!" Once again,

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these changes only exist in your
computer's memory, not in the database.

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We need to call the save method on
the object to update its database record.

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post.save.

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We'll see an SQL query that updates
the record in the database..

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And the next time we query that database,

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we'll see the updated title
instead of the old one.