redux form - Warning: setState(...): Cannot update... when using this.props.change() -

i'm using redux-form v6.5.0

i'm trying save value in hidden field , update when other value change this.props.change('field_name', value)

on componentdidmount call function form data parameters calculate , update hidden field this.props.change('field_name', value)

this function called each time 1 of other field change.

it's working fine have warning warning: setstate(...): cannot update during existing state transition (such within `render` or component's constructor). render methods should pure function of props , state; constructor side-effects anti-pattern, can moved `componentwillmount`.

here full code :

class donnees extends component {      componentdidmount () {         this.calculpreavis(this.props.user)      }      calculpreavis = (user) => {         console.log('calculpreavis');         if (get(user, 'logement.meuble') === 'true') {             this.props.change('user.logement.preavis.duree', 1)             //return 1         }         else if (get(user, 'logement.meuble') === 'false') {             this.props.change('user.logement.preavis.duree', 3)             //return 3         }     }      render () {          const {loading, onsubmit, user} = this.props          return (             <form>                     <field                     component={defaultgroupedbutton}                     name="user.logement.meuble"                     required                     validate={required}                     label="type de location"                     elements={[                         {                             label: `meublée`,                             value: 'true'                         },                         {                             label: `non meublée / vide`,                             value: 'false'                         }                     ]}/>              </form>         )     } } 

is bug ? or missing ? !

i'm assuming trying set sort of initial values form in componentdidmount.

the reason you're seeing error message triggering change function during componentdidmount causes resulting setstate call down call stack happen during component's render example. obvious solution eliminate possibility happen.

i recommend setting form values injecting initialvalues prop component decorated reduxform instead (see docs). check out initialize state -tutorial in redux-form docs more in-depth example.