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    Copyright
    Dedication
    Author of Head First Rails
    how to use this book
    Ch. 1. getting started
    Ch. 2. beyond scaffolding
    Ch. 3. inserting, updating and deleting
    People want to post new ads online
    You already know how to build an app that publishes data from the database
    Saving data works just the opposite of reading data
    You need a form to submit data and an action method to save it
    Are forms and objects related?
    Rails can create forms that are associated with model objects
    The @ad form object has not been created
    The form object needs to be created before the form is displayed
    The forms ad object will be created in the new action of the controller
    Each page template now has a matching controller method
    The form doesn't send an object back, it sends DATA back
    Rails needs to convert the data into an object before it can be saved
    The controller create method step-by-step
    The controller needs to save the record
    Don't create a new page, use an existing one
    But how can a controller action display ANOTHER action's page?
    Redirects let the controller specify which view is displayed
    But what if the ad need to be amended after it's been posted?
    Updating an ad is just like creating one... only different
    Instead of creating an ad, you need to find one; instead of saving it, you need to update the ad
    Restricting access to a function
    ...but now old ads need to be deleted
    Doing it yourself gave you the power to do more than scaffolding
    Ch. 4. database finders
    Ch. 5. validating your data
    Ch. 6. making connections
    Ch. 7. ajax
    Ch. 8. XML and multiple representations
    Ch. 9. REST and Ajax
    Ch. 10. real-world applications
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    Chapter 3. inserting, updating and delet... > The form doesn't send an object back... - Pg. 119