24: Listed all the merchant names in the admin/merchants index page
25: When you click on a merchant's name in the index page, it takes you to the merchant show page, where the name of the merchant is shown.
26: When you click on "Update Merchant" on the show page, it takes you to /admin/merchants/:merchant_id/edit page, where you will find a text box with the merchant's current name prefilled. When you input a new name and click "Submit", it redirects you to the merchant show page, where you will see the new merchant's name that you inputted, as well as a flash message saying that you have successfully changed the merchant's name.
24: Listed all the merchant names in the admin/merchants index page
25: When you click on a merchant's name in the index page, it takes you to the merchant show page, where the name of the merchant is shown.
26: When you click on "Update Merchant" on the show page, it takes you to /admin/merchants/:merchant_id/edit page, where you will find a text box with the merchant's current name prefilled. When you input a new name and click "Submit", it redirects you to the merchant show page, where you will see the new merchant's name that you inputted, as well as a flash message saying that you have successfully changed the merchant's name.