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I don't have any experience with sequel-polymorphic, but basic use of optgroups would be: Forme::Form.new.input(:select, :optgroups=>{Notes: [['a', 1], ['b', 2]], Posts: [['c', 1], ['d', 3]]})
# <select><optgroup label="Notes"><option value="1">a</option><option value="2">b</option></optgroup>
# <optgroup label="Posts"><option value="1">c</option><option value="3">d</option></optgroup></select>I think the main problem you will have with this approach is you don't know when the form is submitted which type is submitted. You could do something like: And parse the attachable type information out of the submitted value. That's kind of ugly, but should allow a single drop down to work. For this type of thing, selecting the attachable type first, then filling in the attachable options for that type is probably a better approach. That requires some Javascript, and it appears you want to avoid that approach. In general, I advise against using polymorphic associations. |
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Yeah, two dropdowns are over-complication for my form but i agree that this is better approach in case if there is no pre-designed way to manage polymorphic type somehow in hidden field, for example (next i will try is to do it with js) Thanks a lot! |
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i want to implement select dropdown with polymorphic field:
(how) can i do it using one dropdown?
thanks
(my real case has more sense but less clear)
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