Question

So suppose I have two Models — Project and Task

I want user to be able to select an existing project and assign a task to it.

This needs to be done in a task_form, in other words, I use Task Controller.
I know if it’s a project form, I can simply create a nested form using
accepts_nested_attributes_for in my Project model. However, the problem is
I need to refer back to a higher level model.

Thanks in advance.

Answer 1

One option is to create a view for the task form where there is a drop down box of all existing projects. You can use collection_select to create the multiselect and then just have it put the id of the project in the project_id column.