Calculation fields in child model does not work if parent model instance was created

[Alexey.Solonets]

Ext version tested:

• Ext 5.0.1.1255

Browser versions tested against:

• Chrome 31,
• IE 11

Description:

• I have a child model that is extended from a parent model which has some calculation fields (calculate config). If I create both parent and child model instances then child model's calculation fields does not work. But if I create only child model's instance it will work fine.

• I guess the problem is somewhere in Ext.data.Model.rankFields. This method forgets calculation fields for the child model.

Steps to reproduce the problem:

• https://fiddle.sencha.com/#fiddle/8go

The result that was expected:

• Calculation field to work in child model

The result that occurs instead:

• Calculation fields doesn't work in child model

[israelroldan]

Thanks for the report! I have opened a bug in our bug tracker.