Stash Embed Variable Assignment

Question

I have two Stash embeds. Both embed templates accept a color variable, but it's optional:

{if '{stash:color}'}
  {stash:color}<br>
{/if}

If I explicitly set the variable in both embeds, everything works as expected:

{exp:stash:embed name='template1' stash:color='Red'}
{exp:stash:embed name='template2' stash:color='Green'}

Outputs:

Red
Green

If I set the variable in the first embed but not the second, it also works as expected:

{exp:stash:embed name='template1' stash:color='Red'}
{exp:stash:embed name='template2'}

Outputs:

Red

But if I leave the first variable empty and set the second, both are assigned the second value:

{exp:stash:embed name='template1'}
{exp:stash:embed name='template2' stash:color='Green'}

Outputs:

Green
Green

Is this a bug? Shouldn't Stash embed variables only be scoped to the embed template they're passed to?

• Stash 2.6.0
• EE 2.10.1

Answer 1

Stash embed variables are available anywhere in the template that is parsed later in the parse order, i.e. they create a variable with global scope. This is by design - so that, for example, child embeds inherit variables passed to their parent, and so that the embeds can pass information to siblings. I would argue this is a feature rather than a bug, but I understand why you may disagree.

When using multiple instances of the same embed that accepts variables, you should set each variable explicitly:

{exp:stash:embed name='template1' stash:color=''}
{exp:stash:embed name='template2' stash:color='Green'}

Answer 2

It looks like you may need to include the file_name in your embed code.

The docs refer to the same template but it's likely that what you're seeing may be related.

Give it a shot and see what happens.

PS. How are you setting your stash var if they're both named the same ?