Shopify购买按钮只添加一个数量到购物车

Question

我已实施＆＃39; Shpoify Buy Button＆＃39;在Symfony项目中。我想限制添加更多数量到购物车。

以下是我的json代码＆＃39; Shpoify Buy Button＆＃39;：

Shopify.render('shopify-btn', {{ current_program.shopifyId|json_encode|raw }}, {
                "product": {
                    "buttonDestination": "checkout",
                    "variantId": "all",
                    "contents": {
                        "img": false,
                        "imgWithCarousel": false,
                        "title": false,
                        "variantTitle": false,
                        "price": false,
                        "description": false,
                        "buttonWithQuantity": false,
                        "quantity": false
                    },
                    "text": {
                        "button": "BUY NOW"
                    },
                    "styles": {
                        "product": {
                            "@media (min-width: 601px)": {
                                "max-width": "100%",
                                "margin-left": "0",
                                "margin-bottom": "50px"
                            }
                        },
                        "button": {
                            "background-color": "#3771c8",
                            "font-size": "18px",
                            "font-weight": "bold",
                            "height": "61px",
                            ":hover": {
                                "background-color": "#3266b4"
                            },
                            ":focus": {
                                "background-color": "#3266b4"
                            }
                        },
                        "title": {
                            "font-size": "26px"
                        },
                        "price": {
                            "font-size": "18px"
                        },
                        "compareAt": {
                            "font-size": "15px"
                        }
                    }
                },
                "cart": {
                    "contents": {
                        "button": false,
                        "quantity": false
                    },
                    "text": {
                        "total": "Total"
                    },
                    "popup":false,
                    "styles": {
                        "button": {
                            "background-color": "#3771c8",
                            ":hover": {
                                "background-color": "#3266b4"
                            },
                            ":focus": {
                                "background-color": "#3266b4"
                            }
                        },
                        "footer": {
                            "background-color": "#ffffff"
                        }
                    }
                },
                "modalProduct": {
                    "contents": {
                        "img": false,
                        "imgWithCarousel": true,
                        "variantTitle": false,
                        "buttonWithQuantity": false,
                        "quantity": false
                    },
                    "styles": {
                        "product": {
                            "@media (min-width: 601px)": {
                                "max-width": "100%",
                                "margin-left": "0px",
                                "margin-bottom": "0px"
                            }
                        },
                        "button": {
                            "background-color": "#3771c8",
                            "font-size": "15px",
                            ":hover": {
                                "background-color": "#3266b4"
                            },
                            ":focus": {
                                "background-color": "#3266b4"
                            }
                        }
                    }
                },
                "toggle": {
                    "styles": {
                        "toggle": {
                            "background-color": "#3771c8",
                            ":hover": {
                                "background-color": "#3266b4"
                            },
                            ":focus": {
                                "background-color": "#3266b4"
                            }
                        }
                    }
                },
                "productSet": {
                    "styles": {
                        "products": {
                            "@media (min-width: 601px)": {
                                "margin-left": "-20px"
                            }
                        }
                    }
                }
            });

通过使用上面的json，我可以在购物车中添加/编辑产品数量。

我只需要在购物车中添加一个数量，也不想在每次点击时添加数量＆＃34; Shopify Buy Button＆＃34;那我该怎么做呢？有人可以帮我吗？