I have magento 1.9 installed with more than 600 products. about 300 products has custom options set with input field drop down.
I want to change input type from drop down to check boxes for all 300 products.
I can only see option of uploading via csv with field _custom_options_type.
Can anyone suggest me how I can update input type efficiently.
Thanks
Checkbox input-type for product attribute are not set as a normal behaviour there is yes/no select for boolean attributes and multiselect for attribute with many values possible.
In case you speak about admin and you want to have a checkbox for an attribute with multiselect, you will have to develop it yourself (but I am sure you can find a module). The same for yes/no.
In case you speak about frontend, you can display multiselect as checkboxes or yes/no as a checkbox to tick with help of CSS and/or JS.
Feel free to precise your question to get more precise answer.
