React date picker filtering dates issue

Question

I seem to be having an issue in restricting weekends as shown in the example.

I'm using class component and trying to implement this functional example from the docs:

Example from docs:

() => {
  const [startDate, setStartDate] = useState(null);
  const isWeekday = date => {
    const day = getDay(date);
    return day !== 0 && day !== 6;
  };
  return (
    <DatePicker
      selected={startDate}
      onChange={date => setStartDate(date)}
      filterDate={isWeekday}
      placeholderText="Select a weekday"
    />
  );
};

Here is what I tried: I created the isWeekday function and passed it to the DatePicker.

import React from 'react'
import DatePicker from 'react-datepicker'
import getDay from 'react-datepicker'
import 'react-datepicker/dist/react-datepicker.css'

const isWeekday = (date) => {
  const day = getDay(date)
  return day !== 0 && day !== 6
}

export class Random extends React.Component {
  constructor(props) {
    super(props)
    this.state = {
      settlementDate: new Date(),
    }
  }

  render() {
    <DatePicker
      selected={this.state.settlementDate}
      onChange={(date) => this.setState({ settlementDate: date })}
      minDate={new Date()}
      filterDate={isWeekday}
    />
  }
}

But I get the following error:

TypeError: Cannot call a class as a function

How can I make a datepicker with weekends restricted?

Do you have more details on that traceback? I think something is missing here. — enapupe, Jun 07 '20 at 01:02
Cannot call a class as a function means that a function you are calling isn't actually a function. I would look at the stack trace and see what is trying to be called as a function. I have ran across this when I imported things incorrectly. — Special Character, Jun 07 '20 at 01:22

score 2 · Accepted Answer · edited Mar 24 '22 at 12:19

2

You are getting error:

TypeError: Cannot call a class as a function

because you are calling class as a function after importing default member from react-datepicker:

Incorrect:

import getDay from 'react-datepicker' // You imported default class as `getDay`
const day = getDay(date) // You tried to call the class

Note: getDay isn't supposed to come from react-datepicker. It is a standard JS Date's method.

Correct:

import React, { Component } from 'react'
import DatePicker from 'react-datepicker'

class SelectWeekDay extends Component<any, any> {
  constructor(props) {
    super(props)
    this.state = {
      startDate: null,
    }
  }

  isWeekday = (date: Date) => {
    const day = date.getDay()
    return day !== 0 && day !== 6
  }

  render() {
    return (
      <>
        <DatePicker
          selected={this.state.startDate}
          onChange={(date) =>
            this.setState({
              startDate: date,
            })
          }
          filterDate={this.isWeekday}
        />
      </>
    )
  }
}

edited Mar 24 '22 at 12:19

General Grievance

4,555
31
31
45

answered Jun 07 '20 at 19:46

Ajeet Shah

18,551
8
57
87

I'm getting a syntax error for `(date: Date)` – Fiddle Freak Dec 21 '20 at 14:49
@FiddleFreak Can you post the full error message? – Ajeet Shah Dec 21 '20 at 15:31
`Type annotations can only be used in TypeScript files.`. If I change it to just `(date)`, it seems to work just fine. – Fiddle Freak Dec 21 '20 at 15:40
I think you are using javascript not the [typescript](https://www.typescriptlang.org/), so `(date)` is the right way to achieve the same. – Ajeet Shah Dec 21 '20 at 16:21
ah okay, this question was tagged for javascript so I assumed so. – Fiddle Freak Dec 21 '20 at 20:39

score 0 · Answer 2 · answered Aug 07 '22 at 03:24

0

install date-fns.

Then try:

import getDay from "date-fns/getDay"

answered Aug 07 '22 at 03:24

FirmCiti Inc

387
1
4
14

React date picker filtering dates issue

2 Answers2