Widget : html 2 dimensional array doesn't work

Question

I have some strange trouble with my WordPress today :

I want to store same multiple values in a widget, so I create something like this : myCollection[id][myField] as input's name for my admin widget form.

After a $this->get_field_name call and template integration, it generates the following code :

<label for="widget-pricetable-ibsciss-widget-2-widget-pricetable-ibscisswidget[2][box[1][price]]"> … </label>
<input id="widget-pricetable-ibsciss-widget-2-widget-pricetable-ibsciss-widget[2][box[1][price]]" value="" name="widget-pricetable-ibsciss-widget[2][box[1][price]]"></input>

After the submit I get this instance array from WordPress :

array(4) { [
  "title"]=> string(12) "Global title" 
  ["box[0"]=> array(2) { 
    ["title"]=> string(6) "title1" 
    ["price"]=> string(6) "price1" 
  } 
  ["box[1"]=> array(2) { 
    ["title"]=> string(6) "title2" 
    ["price"]=> string(6) "price2" 
  } 
  ["box_title"]=> string(9) "Box title"

}

And I have this strange "box[0" keys instead of a well formatted array.

Sorry, what generates that code? get_field_name looks a bit like ACF code but I'm guessing. — s_ha_dum
– s_ha_dum, Commented Nov 28, 2013 at 22:06

lilobase · Accepted Answer · 2013-11-30 17:25:38Z

Ok, with a quick dirty hack I have achieve my goal :

Instead of myCollection[id][myField] I give to the get_field_name's function something like this : collection][id][field.

So the generated code became :

name="widget-pricetable-ibsciss-widget[2][box][1][title]"

And my array just look perfect now :

array(3) { 
  ["title"]=> string(12) "Global title" 
  ["box"]=> array(2) { 
    [0]=> array(2) { 
      ["title"]=> string(6) "title1" 
      ["price"]=> string(6) "price1" 
    } 
    [1]=> array(2) { 
      ["title"]=> string(6) "title2" 
      ["price"]=> string(6) "price2" 
    } 
  } 
  ["box_title"]=> string(9) "Box title" 
}

PS : only for information purpose this is the get_field_name method from Wordpress :

function get_field_name($field_name) {
    return 'widget-' . $this->id_base . '[' . $this->number . '][' . $field_name . ']';
}

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