After some trials I found a solution. In my "customers" table I have a column "product_id" that refers to a (single) product that a customer purchased. Adding the following field to the form creates a list with titles of all of the possible products and preselects the one based on "product_id" value in the original "customer" table. The name of the field and attribute in "customers" table must match for this to work.
I wonder whether this is documented somewhere. I found it by trial and error.
My original assumption that I need to join the "customers" and "products" table so that I can get full product name in a form was therefore wrong. I can operate over a single table ("customers") using the Table() class and get e.g. full titles of possible products that sit in another table using the above approach.
I wonder whether this is documented somewhere. I found it by trial and error.
Code:
<field name="product_id" type="sql" label="COM_EXAMPLE_PRODUCT" query="SELECT id, title FROM #__products" key_field="id" value_field="title"header="COM_EXAMPLE_PRODUCT_SELECT"/>Statistics: Posted by JanoD — Sat Aug 10, 2024 9:47 am