问题
In my angular6 application i have a menu page with 6-7 accordions, and in every accordion i have form fields to be filled in and then a button to submit after which it opens to the next accordion. Here i do not want to give permission to the next accordion if the previous button hasnt been clicked. I have attached an image below, where once one clicks on the submit button, the next accordion should be made open if not should not be permitted to open it manually while clicked on the toggle accordion permission
来源：https://stackoverflow.com/questions/53552524/angular6-accordion-permissions-ie-once-completed-on-filling-all-the-form-fields