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modify readme.md. Document select options hidden workaround #98

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Feb 10, 2014
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modify readme.md. Document select options hidden workaround #98

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16 changes: 15 additions & 1 deletion readme.md
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Expand Up @@ -147,7 +147,21 @@ In order, for ngUpload to respond correctly for IE, your server needs to return

### uploadSubmit

* `upload-options-convert-hidden`: Set the value of hidden inputs to their `ng-model` attribute when the form is submitted.
* `upload-options-convert-hidden`: Set the value of hidden inputs to their `ng-model` attribute when the form is submitted. One situation in which this is useful is when
using select elements whose options are generated with ngOptions, for
example:
```
select[name='category_id' ng-model='category' ng-options='c.id as c.name for c in categories']
```
and where categories is
```
[{id: 12, name: 'fred'}, {id: 65, name: 'wilma'}]
```
Because Angular will generate options whose HTML element value is indexed on 0, the value submitted will be the value of the
option and not the desired ng-model value which is category.id. Adding
a hidden element whose ng-model matches the ng-model of the select
element, combined with
upload-options-convert-hidden='true' will workaround this issue.

## Example

Expand Down