Programming Phoenix 1.4 book examples updated to 1.7

Thank you for posting this, it’s extremely helpful for people learning Phoenix. Mis-match between the code in the book and the current version is frustrating, great work!

Thanks for posting this, @jramnani!

Does category input select in lib/rumbl_web/controllers/video_html/video_form.html.heex work fine for you?

When I use your code as is, the select neither has the proper value selected when opening edit video page, nor the changeset contains changed category_id when I save updated video.

When I use value={f.data.category_id}, the form has category value properly selected when opening edit video page, but still the changeset does not contain changed category_id when I save updated video.

Replacing

<.input
  field={{f, :category_id}}
  name="category"
  type="select"
  label="Categories"
  prompt="Enter a category"
  options={Enum.map(@categories, fn c -> {c.name, c.id} end)}
  value={Enum.map(@categories, fn c -> c.id end)}
  />

from here with

<.input
  field={f[:category_id]}
  type="select"
  label="Categories"
  prompt="Enter a category"
  options={Enum.map(@categories, fn c -> {c.name, c.id} end)}
  />

is what fixed the problem on Phoenix 1.7.7 for me.