select advanced in Group showing: "Warning : Invalid argument supplied foreach"

This topic has 8 replies, 3 voices, and was last updated 1 year, 5 months ago by Ale.

Creator

Topic
October 19, 2018 at 3:48 PM #11675
Resolved Ale
Participant
I have created the followimg metabox using the builder but I am having problems when trying to display on frontend.

Metabox

https://ghostbin.com/paste/gb8nr

Frontend
```
$values = rwmb_meta( 'cellclasses' );
foreach ( $values as $value ) {
    echo $value;
}
```
This is the message I get on frontend:

Warning: Invalid argument supplied for foreach()

Is there a problem because grouping the Select Advanced fields or is there some other problem here?
Creator

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Viewing 8 replies - 1 through 8 (of 8 total)

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October 20, 2018 at 8:31 AM #11686
Anh Tran
Keymaster
Hi Ale,

You’re calling the field cellclasses, which is a sub-field of a group style. So the function rwmb_meta returns nothing, thus the next foreach loop doesn’t work.

You should get the value of the group style first, then get the value of sub-field. Like this:
```
$style = rwmb_meta( 'style' );
$cell_classes = isset( $style['cellclasses'] ) ? $style['cellclasses'] : array();
foreach ( $cell_classes as $cell_class ) {
    echo $cell_class;
}
```
October 20, 2018 at 2:31 PM #11691
Ale
Participant
Thanks so much Anh, I didn’t know that groups will affect how to display fields on the website.
Now works very well.

One more thing is that when adding multiple keys/values to select advanced the Metabox Builder does not create an array but a unique value, if I input the following on the options field:

Red: red
Yellow: yellow
Blue: blue

The Buuilder creates this and not an array:
```
'options' => 'Red: red
Yellow: yellow
Blue: blue',
```
October 22, 2018 at 3:59 PM #11700

Anh Tran
Keymaster

Hi Ale,

I’ve just checked the options for select_advanced field, looks like it’s buggy when put in groups. I’ll fix that.

October 22, 2018 at 6:54 PM #11707

Ale
Participant

Thanks

October 26, 2018 at 7:32 AM #11768

Doug
Participant

Anh – note that it’s not just select_advanced that is buggy when added to a group. It’s also the regular select field that shows the same behavior when placed into a group using Builder. Perhaps fixing one will fix the other. Just wanted to make sure you knew it was both field types that did this.

October 26, 2018 at 2:53 PM #11772

Anh Tran
Keymaster

Yes, it happens for all choice fields. The problem is the Builder doesn’t process sub-fields. We’re trying to fix that.

October 31, 2018 at 9:57 PM #11804

Anh Tran
Keymaster

Hi Ale, the bug is fixed in the latest version of Meta Box Builder. Please update.

Thanks for your bug report!

November 1, 2018 at 3:29 PM #11813

Ale
Participant

Thank you for fixing it!
Author

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