Pass input multiple into the native element

[bcallaghan-et]

The input attribute multiple is much simpler to use than the HTML native attribute. However, setting [multiple]="true" does not actually allow the user to select multiple files. All the input setting does currently is change the name of the form field in the final result. Please use the value of multiple to add or remove the native attribute to the underlying input.

ng-stack/projects/forms/src/lib/input-file.directive.ts

Line 12 in ee7cd79

@Input() multiple: boolean | string;

[KostyaTretyak]

In v2.1.0 this bug is fixed.

[bcallaghan-et]

@KostyaTretyak Unfortunately, this change doesn't work in all cases. Modern browsers only check for the existence of the multiple attribute and don't actually read its value. Thus, setting a value of multiple="false" still allows multiple files to be selected. The only way to disable this behavior is to remove the attribute entirely.

[bcallaghan-et]

@KostyaTretyak After some more testing, I found that this change also prevents my previous workaround of setting the attribute manually no longer works, as the input file directive will overwrite my value. I was previously using [attr.multiple]="allowMultiple ? '' : null" to set or remove the attribute as appropriate.

[KostyaTretyak]

Ok, now I see. As workaround you can set multiple="" or multiple="null". Now I will try to fix it.