What would be the rails text\_field helper equivalent of this?
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I wasn’t sure how to specify the data-total-target with the text\_field helper.
Thanks.
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Is the field really named just `qty`? That would mean to me that it was made with the `text_field_tag` helper rather than the `text_field` helper, since the latter always binds the form field to an instance of your model, and the fields are named something like `your_model_name[qty]` rather than just `qty`.
```nohighlight
f.text_field :qty, class: 'form_control',
data: {
action: 'change->total#settotal',
total: { target: 'qty' }
}
```
…ought to do it. If you find that the data-total-target doesn’t come out kebab-case like you want it with my nested syntax, you can also do `data: { action: '...', 'total-target': 'qty' }` and that will guaranteed work. The data: key always concatenates to it’s direct children with a - rather than a \_, but I don’t know off-hand if it always does that with all of its descendants.
It is also entirely okay (if a little more duplicative and long-hand) to just make up a symbol for each of the data tags you want to add, like `'data-foo-bar': 'baz', 'data-blarg-boo: 'blooey'`. That also works and you end up with the same attributes.
Walter
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