Best way to access entry data from within Playa field?

Question

I have a channel items and a channel colors, and the items channel has a Playa field item_colors that links to the colors channel. What is the best way to loop through the items entries and output a construct like this?

{

  "color_1" : "item_1",
  "color_2" : "item_1",
  "color_3" : "item_1",

  "color_1" : "item_2",
  "color_4" : "item_2",

  "color_5" : "item_3",

  "color_2" : "item_4",
  "color_3" : "item_4",

}

The tricky part is outputting the outer entry title from within the Playa field tag pair. I attempted to do this with a Stash variable:

{exp:channel:entries channel="items" dynamic="no" disable="categories|member_data|pagination"}
  {exp:stash:item_title}{title}{/exp:stash:item_title}
  {item_colors}
    "{title}": "{stash:item_title}",
  {/item_colors}
{/exp:channel:entries}

But the result is the Stash variable outputs the same (last) entry title for every instance. Something about parse order, undoubtedly… any help would be greatly appreciated.

Answer 1

Good news, it should be a quick fix. All you need is to prefix your Playa variables with var_prefix parameter to differentiate the namespace from the Channel Entry variables, although you might have to use the full module tag:

{exp:playa:children field="item_colors" var_prefix="pl"}
    "{pl:title}": "{title}",
{/exp:playa:children}