After several days of research, I have some knowledge about the structure of prestashop.CodeSomething in, need
Check the corresponding file.
Most background files are stored in the admin * (* your own name) folder;
To modify the front-end, first check whether there is a corresponding PHP file in the root directory of the website, and then modify the corresponding TPL file under the corresponding topic in themes/. If it is in the template, go to modules to check the results.
I made several changes a few days ago. Let's take a look at it here and forget it later ~
1. if you need to set the price of the purchased item to a certain amount before you can update the order, you can back office> preferences> products here minimum purchase total required in order to validate order: fill in the corresponding amount.
2. you can set the price ranges or weight ranges option to restrict the corresponding types of distribution. If you want to implement this option, the corresponding distribution method is not displayed unless the restriction is exceeded, in back office> shipping> carriers, select the appropriate delivery method and edit its out-of-range behavior,
It has the disable carrier option to achieve non-display.