Django3.2 | 27 | QRオーダーシステムの構築 | メニューアイテム削除

[26 | メニューアイテム更新]　<<　[ホーム]　>>　[28 | QRコード表示]

削除機能を実装します。


「qrmenu_react/src/apis.js」ファイルに記述を追加します。


記述追加　【QRMenu/qrmenu_react/src/apis.js】99行目

import { toast } from 'react-toastify';

function request(path,  {data = null, token = null, method = "GET" }) {
  return fetch(path, {
    method,
    headers: {
      Authorization: token ? `Token ${token}` : "",
      "Content-Type": "application/json",
    },
    body: method !=="GET" && method !== "DELETE" ? JSON.stringify(data): null,
  })
    .then((response) => {

      //もし成功したら
      if (response.ok) {
        if(method === "DELETE") {
          return true;
        }
        //toast.success("ログイン成功");
        return response.json();
      }
      //失敗
      return response.json().then((json) => {
          //JSONエラー
          if (response.status === 400) {
            //toast.error("氏名もしくはパスワードに間違いがあります。");
            const errors = Object.keys(json).map(
                (k) => `${(json[k].join(" "))}`
            );
            throw new Error(errors.join(" "));
          }
          throw new Error(JSON.stringify(json));
        })
        .catch((e) => {
          if (e.name === "SyntaxError") {
            throw new Error(response.statusText);
          }
          throw new Error(e);
        })
    })

    .catch((e) => {
      //全エラー
      toast(e.message, { type: "error" });
    })
}

export function signIn(username, password) {
  return request("/auth/token/login/", {
    data: {username, password},
    method: "POST",
  })
}

export function register(username, password) {
  return request("/auth/users/", {
    data: {username, password},
    method: "POST",
  })
}

export function fetchPlaces(token) {
  return request("/api/places/", {token});
}

export function addPlace(data, token) {
  return request("/api/places/", {data, token, method: "POST" });
}

export function uploadImage(image) {
  const formData = new FormData();
  formData.append("file", image);
  formData.append("upload_preset", "qrmenu_photos");

  return fetch("https://api.cloudinary.com/v1_1/dov57gocw/image/upload", {
    method: "POST",
    body: formData,
  }).then((response) => {
    return response.json();
  });
}

export function fetchPlace(id, token) {
  return request(`/api/places/${id}`, { token });
}

export function addCategory(data, token) {
  return request("/api/categories/", {data, token, method: "POST"});
}

export function addMenuItems(data, token) {
  return request("/api/menu_items/", {data, token, method: "POST"});
}

export function updateMenuItem(id, data, token) {
  return request(`/api/menu_items/${id}`, { data, token, method: "PATCH"});
}

export function removePlace(id, token) {
  return request(`/api/places/${id}`, {token, method: "DELETE"});
}

export function removeCategory(id, token) {
  return request(`/api/categories/${id}`, {token, method: "DELETE"});
}

export function removeMenuItem(id, token) {
  return request(`/api/menu_items/${id}`, {token, method: "DELETE"});
}

「src/pages/Place.js」ファイルを編集します。


記述編集　【/Users/heyjude/Desktop/QRMenu/qrmenu_react/src/pages/Place.js】

import { IoMdArrowBack } from 'react-icons/io';
import { AiOutlineDelete } from 'react-icons/ai';
import { Row, Col, Button, Modal } from 'react-bootstrap';
import { useParams, useHistory } from 'react-router-dom';
import React, { useEffect, useState, useContext } from 'react';
import styled from 'styled-components';

import { fetchPlace, removePlace, removeCategory, removeMenuItem } from '../apis';
import AuthContext from '../contexts/AuthContext';
import MainLayout from '../layouts/MainLayout';
import MenuItemForm from '../containers/MenuItemForm';
import MenuItem from '../components/MenuItem';

const Panel = styled.div`
    background-color: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 1px 1px 10px rgba(0,0,0,0.05);
`;


const Place = () => {
    const [place, setPlace] = useState({});
    const [menuItemFormShow, setMenuItemFormShow] = useState(false);
    const [selectedItem, setSelectedItem] = useState(null);

    const showModal = () => setMenuItemFormShow(true);
    const hideModal = () => setMenuItemFormShow(false);

    const auth = useContext(AuthContext);
    const params = useParams();
    const history = useHistory();

    const onBack = () => history.push("/places");

    const onFetchPlace = async () => {
        const json = await fetchPlace(params.id, auth.token);
        if(json) {
            setPlace(json);
        }
    };

    const onRemovePlace = () => {
        const c = window.confirm("本当に削除してもよろしいですか？")
        if (c) {
            removePlace(params.id, auth.token).then(onBack);
        }
    };

    const onRemoveCategory = (id) => {
        const c = window.confirm("本当に削除してもよろしいですか？")
        if (c) {
            removeCategory(id, auth.token).then(onFetchPlace);
        }
    };

    const onRemoveMenuItem = (id) => {
        const c = window.confirm("本当に削除してもよろしいですか？")
        if (c) {
            removeMenuItem(id, auth.token).then(onFetchPlace);
        }
    };

    useEffect(() => {
        onFetchPlace();
    }, []);

    return (
        <MainLayout>
            <Row>
                <Col lg={12}>
                    <div className="mb-4">
                        <div className="d-flex align-items-center" Style="margin-left: 2rem; margin-top: 2rem;">
                            <Button variant="link" onClick={onBack}>
                                <IoMdArrowBack size={25} color="black" />
                            </Button>
                            <h3 className="mb-0 ml-2 mr-2">{place.name}</h3>

                            <Button variant="link" onClick={onRemovePlace}>
                                <AiOutlineDelete size={25} color="red" />

                            </Button>
                        </div>
                    </div>
                </Col>
                <Col md={4}>
                    <Panel>
                        <MenuItemForm place={place} onDone={onFetchPlace} />
                    </Panel>
                </Col>

                <Col md={8}>
                    {place?.categories?.map((category) => (
                        <div key={category.id} className="mb-5">
                            <div className="d-flex align-items-center mb4">
                            <h4 className="mb-0 mr-2">
                                <b>{category.name}</b>
                            </h4>
                            <Button variant="link" onClick={() => onRemoveCategory(category.id)}>
                                <AiOutlineDelete size={25} color="red" />
                            </Button>
                            </div>
                            <br/>

                            {category.menu_items.map((item) => (
                                <MenuItem 
                                key={item.id} 
                                item={item}
                                onEdit={() => {
                                    setSelectedItem(item);
                                    showModal()
                                }}
                                onRemove={() => onRemoveMenuItem(item.id)} 
                            />
                            ))}

                        </div>
                    ))}
                </Col>


            </Row>

            <Modal show={menuItemFormShow} onHide={hideModal} centerd>
               <Modal.Body>
                <h4 className="text-center">メニューアイテム</h4>
                <MenuItemForm
                    place={place}
                    onDone={() =>{
                        onFetchPlace(); 
                        hideModal()
                    }}
                    item={selectedItem}
                />
                </Modal.Body> 
            </Modal>

        </MainLayout>
    )
};

export default Place;

「src/components/MenuItem.js」ファイルの編集をします。


記述編集　【QRMenu/qrmenu_react/src/components/MenuItem.js】

import {Col, Button } from 'react-bootstrap';
import React from 'react';
import styled from 'styled-components';
import { BiEdit } from 'react-icons/bi';
import { AiOutlineDelete } from 'react-icons/ai';

const Container = styled.div`
    border-radius: 5px;
    background-color: white;
    margin-bottom: 30px;
    box-shadow: 1px 1px 8px rgba(0,0,0,0,1);
    display: flex;
    opacity: ${({active}) => (active ? 1 : 0.6)};
    > div: first-child {
        width: 40%;
        border-top-left-radius: 5px;
        border-bottom-left-radius: 5px;
        background-size: cover;
    }
    > div:last-child {
        padding: 15px 20px;
        min-height: 150px;
    }
`;

const MenuItem = ({ item, onEdit, onRemove }) => (
    <Container active={item.is_available}>
        <Col xs={5} style={{ backgroundImage: `url(${item.image})` }} />
        <Col xs={7} className="d-flex flex-column justify-content-between w-100">
            <div>
                <div className="d-flex justify-content-between align-items-center mb-2">                
                    <h4 className="mb-2">
                        <b>{item.name}</b>
                    </h4>
                    <span>
                    { onEdit ? (
                        <Button variant="link" onClick={onEdit}>
                            <BiEdit size={20} />
                        </Button>    
                    ) : null  }
                   { onRemove ? (
                        <Button variant="link" onClick={onRemove}>
                            <AiOutlineDelete size={20} color="red" />
                        </Button>    
                    ) : null  }
                    </span>                           
                </div>

                <p className="mb-4">{item.description}</p>
            </div>
            <div className="d-flex justify-content-between align-items-end">
            <div>
                <h5 className="mb-0 text-standard">
                    <b>{item.price}円</b>
                </h5>
            </div>

            {!item.is_available ? (<big className="text-danger">品切れ</big>) : null}

            </div>
        </Col>
    </Container>
);

export default MenuItem;

削除機能が実装されました。

飲食店削除

カテゴリー削除

メニューアイテム削除

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[26 | メニューアイテム更新]　<<　[ホーム]　>>　[28 | QRコード表示]