Add data field to pass up parameters up to reducer.

app/scripts/lib/idStore.js

@@ -99,6 +99,8 @@ IdentityStore.prototype.getState = function () {
     unconfMsgs: messageManager.unconfirmedMsgs(),
     messages: messageManager.getMsgList(),
     selectedAddress: configManager.getSelectedAccount(),
+    currentFiat: configManager.getCurrentFiat(),
+    currentConversion: configManager.getConversionRate(),
   }))
 }
 

app/scripts/metamask-controller.js

@@ -241,8 +241,13 @@ module.exports = class MetamaskController {
     try {
       this.configManager.setCurrentFiat(fiat)
       this.configManager.setConversionRate()
+      const data = {
+        conversionRate: this.configManager.getConversionRate,
+        currentFiat: this.configManager.getCurrentFiat,
+      }
+      cb(data)
     } catch (e) {
-      cb(e)
+      cb(null,e)
     }
   }
 

ui/app/actions.js

@@ -212,10 +212,14 @@ function revealAccount () {
 function setCurrentFiat (fiat) {
   return (dispatch) => {
     dispatch(this.showLoadingIndication())
-    _accountManager.setCurrentFiat(fiat, (err) => {
+    _accountManager.setCurrentFiat(fiat, (data, err) => {
       dispatch(this.hideLoadingIndication())
       dispatch({
         type: this.SET_CURRENT_FIAT,
+        value: {
+          currentFiat: data.currentFiat,
+          conversionRate: data.conversionRate,
+        }
       })
     })
   }

ui/app/reducers/metamask.js

@@ -109,6 +109,12 @@ function reduceMetamask (state, action) {
       var identities = extend(metamaskState.identities, id)
       return extend(metamaskState, { identities })
 
+    case actions.SET_CURRENT_FIAT:
+      return extend(metaMaskState, {
+        currentFiat: action.value.currentFiat,
+        conversionRate: action.value.conversionRate,
+      })
+
     default:
       return metamaskState