Calculate total quantities purchased by SKU, with Mechanic.

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Calculate total quantities purchased by SKU

This task scans all orders, regardless of status, and counts up the lifetime quantity purchased for each SKU, listing each SKU with its quantity and all related order names. This task demonstrates Shopify's bulk operations API.

Runs Occurs when a user manually triggers the task and Occurs when a bulk operation is completed.

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Open source
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Subscriptions
mechanic/user/trigger
mechanic/shopify/bulk_operation
Tasks use subscriptions to sign up for specific kinds of events. Learn more
Code
{% if event.topic == "mechanic/user/trigger" %}
  {% capture bulk_operation_query %}
    query {
      orders {
        edges {
          node {
            id
            __typename
            name
            lineItems {
              edges {
                node {
                  id
                  __typename
                  quantity
                  sku
                }
              }
            }
          }
        }
      }
    }
  {% endcapture %}

  {% action "shopify" %}
    mutation {
      bulkOperationRunQuery(
        query: {{ bulk_operation_query | json }}
      ) {
        bulkOperation {
          id
          status
        }
        userErrors {
          field
          message
        }
      }
    }
  {% endaction %}
{% elsif event.topic == "mechanic/shopify/bulk_operation" %}
  {% assign quantities_by_sku = hash %}
  {% assign order_names_by_sku = hash %}

  {% for object in bulkOperation.objects %}
    {% case object.__typename %}
    {% when "LineItem" %}
      {% assign sku = object.sku | default: "(no sku)" %}
      {% assign quantities_by_sku[sku] = quantities_by_sku[sku] | default: 0 | plus: object.quantity %}

      {% if order_names_by_sku[object.sku] == nil %}
        {% assign order_names_by_sku[sku] = array %}
      {% endif %}

      {% assign _count = order_names_by_sku[sku].size %}
      {% assign order_names_by_sku[sku][_count] = object.__parent.name %}
    {% endcase %}
  {% endfor %}

  {% if event.preview %}
    {% assign quantities_by_sku["ABC123"] = 20 %}
    {% assign order_names_by_sku["ABC123"] = "#12345,#67890" | split: "," %}
    {% assign quantities_by_sku["DEF456"] = 20 %}
    {% assign order_names_by_sku["DEF456"] = "#12345,#67890" | split: "," %}
  {% endif %}

  {% capture summary -%}
    Quantity purchased by SKU, across all time and all order statuses:

    {% for keyval in quantities_by_sku -%}
      {% assign sku = keyval[0] -%}
      {% assign quantity = keyval[1] -%}

      * {{ sku }}: {{ quantity }} ({{ order_names_by_sku[sku] | join: ", " }})
    {% endfor %}
  {% endcapture %}

  {% assign summary = summary | unindent | strip %}

  {% action "echo" summary %}
{% endif %}
Task code is written in Mechanic Liquid, an extension of open-source Liquid enhanced for automation. Learn more