ExtJS 6 grid group by associated models
问题 Context A while ago I used this answer to implement remote sorting and filtering. Using the format 'associatedModel.associatedModelField', I could easily resolve the expression in my server side code in order to query the database. Problem While this does the job, I encountered another problem with grouping - which I have configured to be local - the associated models . If I group a column which displays an associated field, I cannot collapse or expand without errors. Doing the same thing for