How to sort by (dropdown from toolbar.phtml) products which has special price comes first on product list (search or category) page?

Question

On product list page want option in sort by dropdown discounted first products so all prodcuts in list with special price comes first.

How I can do that?

Solution

To be able to filter on an attribute in the product list you can edit the value Used for Sorting in Product Listing for that attribute.

Go to Backend > Catalog > Attributes > Manage Attributes filter on Attribute code Special price and click it.

Then scroll down until you see the option Used for Sorting in Product Listing and set that to yes. Refresh your cache and indexes afterwards.

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