Material input appears to allow multiple addition, but in fact allows only one

[gbathree]

I am able to add multiple materials to the material type dropdown in the add quantity space in a log, but when I hit 'update quantity' it only saves on material.

It appears that in reality, only one material is possible to be added per quantity (which may be fine). If so, that dropdown box should not appear to allow more than one. Otherwise, if more than one is allowed, it should not remove the other added materials upon 'update quantity.

See image below.

[mstenta]

Hmm good point.

We may also want to change the language of the description so it is more singular:

What type of materials are material is being applied?

[mstenta]

Here is where that field is currently defined:

farmOS/modules/quantity/material/src/Plugin/Quantity/QuantityType/Material.php

Line 26 in 6a57206

$options = [

It delegates to the farmFieldFactory service which sets some field widget default settings for taxonomy_term reference fields:

farmOS/modules/core/field/src/FarmFieldFactory.php

Line 324 in 6a57206

// Term reference.

[mstenta]

I believe this is the low-level element that gets used by the widget: https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Entity%21Element%21EntityAutocomplete.php/class/EntityAutocomplete/8.2.x

It provides this property:

#tags: (optional) TRUE if the element allows multiple selection. Defaults to FALSE.

I wonder if that has any affect on this behavior. I would imagine it is already set to FALSE though because we are not setting #multiple to TRUE... 🤔