Variables in templates

Question

I want to update a variable based on my module. I can pass the variable from the main template (say A) to the embedded one(say B). But how can I retrieve this variable back in Template A after updating the variable from B.

Or is there any other way to use a variable in a template and gets updated from a module and the updated variable to be used in the proceeding exp: calls to the module?

When I try to update the variable, I always get the first assigned value.I think the issue is with the parse order.

If anyone knows, please help how to handle this requirement.

Thanks

Answer 1

Embeds are normally parsed at the end.
You can try setting a variable with Stash.
In the main-template get the variable at process-end.

A better approach is to use stash to store your data
in the first place, and avoid an extra embed altogether.
https://github.com/croxton/Stash

// template1 -----------------------------------------
{exp:stash:set name="myvar"}value1{/exp:stash:set}
<h1>Test1</h1>
<p>The value is: {exp:stash:get name="myvar" process="end"}</p>
{embed="group/template2"}

// template2 -----------------------------------------
<h2>The embed</h2>
<p>myvar: {exp:stash:get name="myvar"}</p>
{exp:stash:set name="myvar"}value-embed{/exp:stash:set}

// output --------------------------------------------
Test1
The value is: value-embed
The embed
myvar: value1

Answer 2

If you need to modify the variable in the process of template parsing, I would suggest creating a plugin that will utilize EE Session cache.

Depending on your exact needs, you may find Low Variables useful as well.