from_json

Does the opposite of to_json :

Provide JSON to the filter and it will return an object with variables.

Input:

{% capture json_string %}
  { 
    "id": 1,
    "name": "Joe" 
  }
{% endcapture %}
{% assign test = json_string | from_json %}
{{ test }}

You can now use test.id and test.name in your templating code.

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