[field][valueBehaviourMixin]

[anisgh]

/**
  * Get the value from the field.
  */
  getValue: function getValue() {
    return this.refs.input.getValue();
  },

Get an error Uncaught TypeError: Cannot read property 'getValue' of undefined

[anisgh]

When used with a jquery plugin

[oussony]

valueBehaviourMixin =>

 getValue: function getValue() {
    return this.refs.input.getValue();
  },
 getValue: function getValue() {
    return if(this.refs.input){ return this.refs.input.getValue()} else return this.state.value;
  },