Show record count in list header

frappe/model/db_query.py

@@ -578,3 +578,13 @@ def get_list(doctype, *args, **kwargs):
 	'''wrapper for DatabaseQuery'''
 	kwargs.pop('cmd', None)
 	return DatabaseQuery(doctype).execute(None, *args, **kwargs)
+
+@frappe.whitelist()
+def get_count(doctype, filters=None):
+	if filters:
+		filters = json.loads(filters)
+
+	if isinstance(filters, list):
+		filters = frappe.utils.make_filter_dict(filters)
+
+	return frappe.db.count(doctype, filters=filters)

frappe/public/js/frappe/list/list_renderer.js

@@ -355,6 +355,29 @@ frappe.views.ListRenderer = Class.extend({
 			this.render_tags($item_container, value);
 		});
 
+		this.render_count(values.length);
+	},
+
+	render_count: function(current_count) {
+		console.log(this)
+		const $header_right = this.list_view.list_header.find('.list-item__content--activity');
+
+		frappe.call({
+			method: 'frappe.model.db_query.get_count',
+			args: {
+				doctype: this.doctype,
+				filters: this.list_view.get_filters_args()
+			}
+		}).then(r => {
+			const count = r.message;
+			const $html = $(`<span>${current_count} of ${count}</span>`);
+
+			$html.css({
+				marginRight: '10px'
+			})
+			$header_right.addClass('text-muted');
+			$header_right.html($html);
+		})
 	},
 
 	// returns html for a data item,

frappe/utils/data.py

@@ -781,6 +781,16 @@ def make_filter_tuple(doctype, key, value):
 	else:
 		return [doctype, key, "=", value]
 
+def make_filter_dict(filters):
+	'''convert this [[doctype, key, operator, value], ..]
+	to this { key: (operator, value), .. }
+	'''
+	_filter = frappe._dict()
+	for f in filters:
+		_filter[f[1]] = (f[2], f[3])
+
+	return _filter
+
 def scrub_urls(html):
 	html = expand_relative_urls(html)
 	# encoding should be responsibility of the composer