Combination validation from both custom script and doctype .py file?

Frappe Framework Customization
1

Hi All,

Below is the validation code of custom script

image.png1026×524 18.5 KB

Below is the validation code of doctype py file

image.png946×183 8.6 KB

Seem like only one part is working fine only.( need to remove other part )
How i convert the code below in custom script to .py file ?

// make a field read-only after saving
frappe.ui.form.on(“Task”, {
refresh: function(frm) {
// use the __islocal value of doc, to check if the doc is saved or not
frm.set_df_property(“myfield”, “read_only”, frm.doc.__islocal ? 0 : 1);
}
});

2

Custom Script should be like,

frappe.ui.form.on('Master God Plate', {
	refresh: function(frm) {
		//refresh block
	},

	validate: function(frm) {
		//validate block
	}
})