button 'edit symptoms for today' actually goes to dayview of today

home.js

@@ -4,21 +4,30 @@ import {
   Button,
   Text
 } from 'react-native'
+import { LocalDate } from 'js-joda'
 import styles from './styles'
 import getCycleDay from './get-cycle-day'
+import { getOrCreateCycleDay } from './db'
 
 export default class Home extends Component {
   constructor(props) {
     super(props)
   }
 
+  passTodayToDayView() {
+    const todayDateString = LocalDate.now().toString()
+    const cycleDay = getOrCreateCycleDay(todayDateString)
+    const navigate = this.props.navigation.navigate
+    navigate('dayView', { cycleDay })
+  }
+
   render() {
     const navigate = this.props.navigation.navigate
     return (
       <View style={styles.container}>
         <Text style={styles.welcome}>Welcome! Today is day {getCycleDay()} of your current cycle</Text>
         <Button
-          onPress={() => navigate('temperatureList')}
+          onPress={() => this.passTodayToDayView()}
           title="Edit symptoms for today">
         </Button>
         <Button

package.json

@@ -14,6 +14,7 @@
     "lint": "eslint app test"
   },
   "dependencies": {
+    "js-joda": "^1.8.2",
     "moment": "^2.22.1",
     "react": "16.3.1",
     "react-native": "0.55.4",