[doclist] new pattern / [item] pricelist must be unique / [formatter] show null floats as empty string

public/js/wn/form/formatters.js

@@ -11,7 +11,8 @@ wn.form.formatters = {
 			parseInt(wn.boot.sysdefaults.float_precision) : null;
 
 		return "<div style='text-align: right'>" + 
-			format_number(value, null, decimals) + "</div>";
+			((value==null || value==="") ? "" :
+				format_number(value, null, decimals)) + "</div>";
 	},
 	Int: function(value) {
 		return cint(value);

webnotes/db.py

@@ -309,6 +309,9 @@ class Database:
 		return ret and ((len(ret[0]) > 1 or as_dict) and ret[0] or ret[0][0]) or None
 		
 	def get_values(self, doctype, filters=None, fieldname="name", ignore=None, as_dict=False, debug=False):
+		if isinstance(filters, list):
+			return self.get_value_for_many_names(doctype, filters, fieldname)
+			
 		fields = fieldname
 		if fieldname!="*":
 			if isinstance(fieldname, basestring):
@@ -367,6 +370,11 @@ class Database:
 
 		return r
 
+	def get_value_for_many_names(self, doctype, names, field):
+		names = filter(None, names)
+		return dict(self.sql("select name, `%s` from `tab%s` where name in (%s)" \
+			% (field, doctype, ", ".join(map(lambda n: "'%s'" % n.replace("'", "\'"), names)))))
+
 	def set_value(self, dt, dn, field, val, modified=None, modified_by=None):
 		from webnotes.utils import now
 		if dn and dt!=dn:

webnotes/model/doclist.py

@@ -60,6 +60,9 @@ class DocList(list):
 					break
 		
 		return DocList(out)
+		
+	def get_distinct_values(self, fieldname):
+		return list(set(map(lambda d: d.fields.get(fieldname), self)))
 
 	def remove_items(self, filters):
 		for d in self.get(filters):