With Rails 5, how to think about naming a form field to later be used be a Rails Controller#create method - ruby-on-rails

Question

In Rails 5, I have the following model:
Talents.rb
id | Title
1 | Jumping
2 | Skipping
3 | Running
My API, returns Talents#Index like so:
[
{"id":1,"title":"Jumping"},
{"id":2,"title":"Skipping Rope"},
{"id":3,"title":"Running"},
{"id":4,"title":"Something Else"}
]
I then want to use the respond to build a form:
<div>
<label>Jumping</label>
<select name="Jumping">
<option></option>
<option value="1">XXX</option>
<option value="2">YYY</option>
</select>
</div>
....
My question is how should I be thinking about NAMING the talents in the form so that I can properly post the form to Rails to then record the user's response?
Do I need another field from the API with some type of Key? Or for select name, should I be using the ID?

Answer 1

I will do something like this:
<form name="my-form" method="post" action="/create">
<div>
<label>Jumping</label>
<input type="hidden" name="ratings[]talent_id" value="1"></input>
<select name="ratings[]rating">
<option></option>
<option value="1">Rating 1</option>
<option value="2">Rating 2</option>
</select>
</div>
<div>
<label>Skipping</label>
<input type="hidden" name="ratings[]talent_id" value="2"></input>
<select name="ratings[]rating">
<option></option>
<option value="1">Rating 1</option>
<option value="2">Rating 2</option>
</select>
</div>
<div>
<label>Running</label>
<input type="hidden" name="ratings[]talent_id" value="3"></input>
<select name="ratings[]rating">
<option></option>
<option value="1">Rating 1</option>
<option value="2">Rating 2</option>
</select>
</div>
<input type="submit" name="submit" value="Send">
</form>
Using ratings[] will create an array, which enables you tu use the same name for each select.
Adding an input with type hidden, will allow to specify which talent is being rated (the value of each input is the talent_id to be rated in that select).
For example, if a user selects the following:
Rating 2 for Jumper
Rating 1 for Jumping
Rating 1 for Skipping
Then the following parameters will be sent to your controller:
Parameters: {
"ratings"=>[
{"talent_id"=>"1", "rating"=>"2"},
{"talent_id"=>"2", "rating"=>"1"},
{"talent_id"=>"3", "rating"=>"1"}
]
}
Now, in your controller you could just iterate over params[:ratings] to create each object, maybe something like this:
params[:ratings].each do |rating|
rating_attributes = {
user_id: user, # use the appropriate `user_id`
rated_by: rater, # use the appropriate `rated_by`
talent_id: rating[:talent_id],
rating: rating[:rating]
}
Rating.create!(rating_attributes)
end
Of course you should optimize this method by, for example, handling errors instead of raising an exception (as create! does); but this will get you going.