this.store.byValue is undefined

[30081996]

Hello! I've got an error , after calling

 field.setValue(field.getStore().getAt(_idx).get(field.valueField)); 

i get an undefined error in ext debug all

findRecordByValue: function(value) {                          //value = 7560        
var result = this.store.byValue.get(value),           //result= undefined            
ret = false;                                                                       
if (result) {            
ret = result[0] || result;      
  }        
return ret;   
 },

it looks like this.store.byValue is undefined, and from this point js crashes.
a few facts:

field is combobox, it has defined valueField and displayField, the value is existent in store, i searched in store.data.items, and the value of _idx is 0 in this case; also, the combobox is created dynamically depending on some data that i get after an ajax call, but the store is predefined.

Does anybody have any clue what's going on?

[tristan.lee]

What version of the framework are you using? Can you create a fiddle (http://fiddle.sencha.com) demonstrating the issue?

[30081996]

Version is: 5.1.3

Hello, i'm sorry but i can not reproduce it in fiddler, since the combobox is created dynamically. i looked over other stores in the same function, and it looks like they all have that property called byValue, the issue is here. is something that might cause the disappearing of byValue property?

[cplomp]

This post is old but I came across it on Google so I'm posting a solution. byValue is a method added by the Combobox onBindStore method. If you set the store as part of the the initial config or by using setStore the method will be available. Otherwise if the store is set using this.store = the onBindStore method will not fire and byValue will will not be available. This prevents setValue and getSelectedRecord and potentially other functions from working.

[fappels]

I lost my store.byValue when I added a second form to viewport with a selectfield bind to same store as a selectfield on form already in viewport. Solved it by removing store from second form config and add it dynamic after form show using setStore.
I'm on ExtJs 6.6