this.validate not working onPress button, only onChangeText input

[GustavoLucero]

I have this.validate({...}) method inside an onPress function, but this.validate is not fired when I press the button, this.validate is only fired when I write in the inputs. So this.getErrorMessages() is not returning nothing when I trigger onPress event, but it does return a response when I write in inputs.

¿Should it work like that?

NOTE: I'm working with nativebase.

• Constructor

constructor() {
   super();
   this.state = { email: '' }
}

• onPress function

login = () => {
    this.validate({
      email : {required: true, email: true}
    });
  }

• Input component

   <Input style={styles.input}
      value={this.state.email}
      keyboardType='email-address'
      ref={(ref) => this.email = ref}
     onChangeText={(email) => this.setState({email})}
   />

• Button and error messages Text

<Text>{this.getErrorMessages()}</Text>

<Button onPress={() => this.login()}>
   <Text>LOGIN</Text>
</Button>

[imamsutono]

try to call setState with whatever state you have, such as error state and pass with any value

[ghost]

Use this
_onPressButton = () => {
this.validate({
name: { minlength: 3, maxlength: 7, required: true },
email: { email: true },
number: { numbers: true },
date: { date: 'YYYY-MM-DD' }
});
}

Instead of
_onPressButton(){
this.validate({
name: { minlength: 3, maxlength: 7, required: true },
email: { email: true },
number: { numbers: true },
date: { date: 'YYYY-MM-DD' }
});
}

[ghost]

import React, { Component } from 'react';
import { View, Text, TextInput, TouchableHighlight } from 'react-native';
import ValidationComponent from '../../validator/index';

export default class App extends ValidationComponent {

constructor(props) {
super(props);
// this.state = {name : "My name", email: "tibtib@gmail.com", number:"56", date: "2017-03-01"};
this.state = { name: "", email: "", number: "", date: "" };
}

_onPressButton = () => {
this._validateForm();
};
onChangeTextName = (text) => {
this.setState({ name: text });
this.validate({
name: { minlength: 3, maxlength: 7, required: true }
});

}
onChangeTextEmail = (text) => {
this.setState({ email: text });
this.validate({
email: { email: true }
});

}
onChangeTextDigit = (text) => {
this.setState({ number: text });
this.validate({
number: { numbers: true }
});

}
onChangeTextDate = (text) => {
this.setState({ date: text });
this.validate({
date: { date: 'YYYY-MM-DD' }
});

}

_validateForm() {
this.validate({
name: { minlength: 3, maxlength: 7, required: true },
email: { email: true },
number: { numbers: true },
date: { date: 'YYYY-MM-DD' }
});
}

render() {

return (
  <View style={{ paddingVertical: 30 }}>
    <Text>Name</Text>
    <TextInput ref="name" onChangeText={(name) => this.onChangeTextName(name)} value={this.state.name} />
    <Text>{(this.isFieldInError('name') && this.getErrorsInField('name'))?this.getErrorsInField('name'):''}</Text>

    <Text>Email</Text>
    <TextInput ref="email" onChangeText={(email) => this.onChangeTextEmail(email)} value={this.state.email} />
    <Text>{(this.isFieldInError('email') && this.getErrorsInField('email'))?this.getErrorsInField('email'):''}</Text>
    <Text>Number</Text>
    <TextInput ref="number" onChangeText={(number) => this.onChangeTextDigit(number)} value={this.state.number} />
    <Text>{(this.isFieldInError('number') && this.getErrorsInField('number'))?this.getErrorsInField('number'):''}</Text>
    <Text>DoB</Text>
    <TextInput ref="date" onChangeText={(date) => this.onChangeTextDate(date)} value={this.state.date} />
    <Text>{(this.isFieldInError('date') && this.getErrorsInField('date'))?this.getErrorsInField('date'):''}</Text>
   
    <TouchableHighlight onPress={this._onPressButton}>
      <Text>Submit</Text>
    </TouchableHighlight>

    
  </View>
);

}

}

[team-collaboration]

Did anyone found a solution for this? same issue happening in my app as well.
Please share the solution.

My issue is:
when clicking on the form submit button the error is not showing right after clicking on checkbox or selection from picker the error message shows up.

[PauZoffoli]

constructor(props) {

super(props  );

this.state = { cambio: "",name : "", email: "tibtib@gmail.com", number:"56", date: "2017-03-01"};

}

_onPressButton = () => {
// Call ValidationComponent validate method
this.validate({
name: {minlength:3, maxlength:7, required: true},
email: {email: true},
number: {numbers: true},
date: {date: 'YYYY-MM-DD'}
});

this.setState({
  cambio: ''
})

}