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Magento 将可配置产品的选项设置为一系列选择下拉菜单 - 其中第一个选项的选择将相关选项添加到第二个选项,第二个选项的选择会将相关选项添加到第三个选项,依此类推。

我想通过为具有其他表单对象的可配置产品设置选择选项来覆盖这些下拉菜单,而不是由 magento 创建的标准选择下拉菜单。但是,重写 magento 的代码似乎既复杂又冒险,所以我试图隐藏默认的下拉菜单并创建更好看的 css 按钮来替换它们。当单击这些新按钮时,代码将从隐藏的下拉列表中选择相同的选项,读取标准 magento js 打印的结果,并将信息传递回我的脚本。

问题是我无法单击我的按钮来影响下拉列表 - 我可以让下拉列表显示新值,但似乎无法激活将相关选项添加到下一个选择下拉列表的磁力 js。

magento js 是用prototype.js 编写的,我正在使用带有jQuery 库的常规javascript。

以下是可配置产品的原型脚本磁铁:

/**************************** CONFIGURABLE PRODUCT **************************/
Product.Config = Class.create();
Product.Config.prototype = {
    initialize: function(config){
        this.config     = config;
        this.taxConfig  = this.config.taxConfig;
        this.settings   = $$('.super-attribute-select');
        this.state      = new Hash();
        this.priceTemplate = new Template(this.config.template);
        this.prices     = config.prices;

        this.settings.each(function(element){
            Event.observe(element, 'change', this.configure.bind(this))
        }.bind(this));

        // fill state
        this.settings.each(function(element){
            var attributeId = element.id.replace(/[a-z]*/, '');
            if(attributeId && this.config.attributes[attributeId]) {
                element.config = this.config.attributes[attributeId];
                element.attributeId = attributeId;
                this.state[attributeId] = false;
            }
        }.bind(this))

        // Init settings dropdown
        var childSettings = [];
        for(var i=this.settings.length-1;i>=0;i--){
            var prevSetting = this.settings[i-1] ? this.settings[i-1] : false;
            var nextSetting = this.settings[i+1] ? this.settings[i+1] : false;
            if(i==0){
                this.fillSelect(this.settings[i])
            }
            else {
                this.settings[i].disabled=true;
            }
            $(this.settings[i]).childSettings = childSettings.clone();
            $(this.settings[i]).prevSetting   = prevSetting;
            $(this.settings[i]).nextSetting   = nextSetting;
            childSettings.push(this.settings[i]);
        }

        // Set default values - from config and overwrite them by url values
        if (config.defaultValues) {
            this.values = config.defaultValues;
        }

        var separatorIndex = window.location.href.indexOf('#');
        if (separatorIndex != -1) {
            var paramsStr = window.location.href.substr(separatorIndex+1);
            var urlValues = paramsStr.toQueryParams();
            if (!this.values) {
                this.values = {};
            }
            for (var i in urlValues) {
                this.values[i] = urlValues[i];
            }
        }

        this.configureForValues();
        document.observe("dom:loaded", this.configureForValues.bind(this));
    },

    configureForValues: function () {
        if (this.values) {
            this.settings.each(function(element){
                var attributeId = element.attributeId;
                element.value = (typeof(this.values[attributeId]) == 'undefined')? '' : this.values[attributeId];
                this.configureElement(element);
            }.bind(this));
        }
    },

    configure: function(event){
        var element = Event.element(event);
        this.configureElement(element);
    },

    configureElement : function(element) {
        this.reloadOptionLabels(element);
        if(element.value){
            this.state[element.config.id] = element.value;
            if(element.nextSetting){
                element.nextSetting.disabled = false;
                this.fillSelect(element.nextSetting);
                this.resetChildren(element.nextSetting);
            }
        }
        else {
            this.resetChildren(element);
        }
        this.reloadPrice();
//      Calculator.updatePrice();
    },

    reloadOptionLabels: function(element){
        var selectedPrice;
        if(element.options[element.selectedIndex].config){
            selectedPrice = parseFloat(element.options[element.selectedIndex].config.price)
        }
        else{
            selectedPrice = 0;
        }
        for(var i=0;i<element.options.length;i++){
            if(element.options[i].config){
                element.options[i].text = this.getOptionLabel(element.options[i].config, element.options[i].config.price-selectedPrice);
            }
        }
    },

    resetChildren : function(element){
        if(element.childSettings) {
            for(var i=0;i<element.childSettings.length;i++){
                element.childSettings[i].selectedIndex = 0;
                element.childSettings[i].disabled = true;
                if(element.config){
                    this.state[element.config.id] = false;
                }
            }
        }
    },

    fillSelect: function(element){
        var attributeId = element.id.replace(/[a-z]*/, '');
        var options = this.getAttributeOptions(attributeId);
        this.clearSelect(element);
        element.options[0] = new Option(this.config.chooseText, '');

        var prevConfig = false;
        if(element.prevSetting){
            prevConfig = element.prevSetting.options[element.prevSetting.selectedIndex];
        }

        if(options) {
            var index = 1;
            for(var i=0;i<options.length;i++){
                var allowedProducts = [];
                if(prevConfig) {
                    for(var j=0;j<options[i].products.length;j++){
                        if(prevConfig.config.allowedProducts
                            && prevConfig.config.allowedProducts.indexOf(options[i].products[j])>-1){
                            allowedProducts.push(options[i].products[j]);
                        }
                    }
                } else {
                    allowedProducts = options[i].products.clone();
                }

                if(allowedProducts.size()>0){
                    options[i].allowedProducts = allowedProducts;
                    element.options[index] = new Option(this.getOptionLabel(options[i], options[i].price), options[i].id);
                    element.options[index].config = options[i];
                    index++;
                }
            }
        }
    },

    getOptionLabel: function(option, price){
        var price = parseFloat(price);
        if (this.taxConfig.includeTax) {
            var tax = price / (100 + this.taxConfig.defaultTax) * this.taxConfig.defaultTax;
            var excl = price - tax;
            var incl = excl*(1+(this.taxConfig.currentTax/100));
        } else {
            var tax = price * (this.taxConfig.currentTax / 100);
            var excl = price;
            var incl = excl + tax;
        }

        if (this.taxConfig.showIncludeTax || this.taxConfig.showBothPrices) {
            price = incl;
        } else {
            price = excl;
        }

        var str = option.label;
        if(price){
            if (this.taxConfig.showBothPrices) {
                str+= ' ' + this.formatPrice(excl, true) + ' (' + this.formatPrice(price, true) + ' ' + this.taxConfig.inclTaxTitle + ')';
            } else {
                str+= ' ' + this.formatPrice(price, true);
            }
        }
        return str;
    },

    formatPrice: function(price, showSign){
        var str = '';
        price = parseFloat(price);
        if(showSign){
            if(price<0){
                str+= '-';
                price = -price;
            }
            else{
                str+= '+';
            }
        }

        var roundedPrice = (Math.round(price*100)/100).toString();

        if (this.prices && this.prices[roundedPrice]) {
            str+= this.prices[roundedPrice];
        }
        else {
            str+= this.priceTemplate.evaluate({price:price.toFixed(2)});
        }
        return str;
    },

    clearSelect: function(element){
        for(var i=element.options.length-1;i>=0;i--){
            element.remove(i);
        }
    },

    getAttributeOptions: function(attributeId){
        if(this.config.attributes[attributeId]){
            return this.config.attributes[attributeId].options;
        }
    },

    reloadPrice: function(){
        var price    = 0;
        var oldPrice = 0;
        for(var i=this.settings.length-1;i>=0;i--){
            var selected = this.settings[i].options[this.settings[i].selectedIndex];
            if(selected.config){
                price    += parseFloat(selected.config.price);
                oldPrice += parseFloat(selected.config.oldPrice);
            }
        }

        optionsPrice.changePrice('config', {'price': price, 'oldPrice': oldPrice});
        optionsPrice.reload();

        return price;

        if($('product-price-'+this.config.productId)){
            $('product-price-'+this.config.productId).innerHTML = price;
        }
        this.reloadOldPrice();
    },

    reloadOldPrice: function(){
        if ($('old-price-'+this.config.productId)) {

            var price = parseFloat(this.config.oldPrice);
            for(var i=this.settings.length-1;i>=0;i--){
                var selected = this.settings[i].options[this.settings[i].selectedIndex];
                if(selected.config){
                    var parsedOldPrice = parseFloat(selected.config.oldPrice);
                    price += isNaN(parsedOldPrice) ? 0 : parsedOldPrice;
                }
            }
            if (price < 0)
                price = 0;
            price = this.formatPrice(price);

            if($('old-price-'+this.config.productId)){
                $('old-price-'+this.config.productId).innerHTML = price;
            }

        }
    }
}
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1 回答 1

5

今天我遇到了同样的问题,并为解决方案做了很多工作。我也尝试向其他人展示我在这里所做的事情。

主要问题是(如您所说),更改事件未正确触发。如果您键入 element.change() 之类的内容,也不会。

所以我找到了这个方法:

    function fireEvent(element,event)
{
    if (document.createEventObject)
    {
        // dispatch for IE
        var evt = document.createEventObject();
        return element.fireEvent('on'+event,evt);
    }
    else
    {
        // dispatch for firefox + others
        var evt = document.createEvent("HTMLEvents");
        evt.initEvent(event, true, true );
        return !element.dispatchEvent(evt);
    }
}

来自http://icebergcommerce.com/software/blog/iss/article/magento-configurable-products-setting-default-value-for-options/

然后我触发了更改方法:

    var obj = jQuery('#'+parentObj.attr('value')).get();
    Event.observe(obj[0],'change',function(){});
    fireEvent(obj[0],'change');

因此 obj 是下拉菜单中的普通 JS 选择对象。

我希望它有帮助!

于 2013-01-22T11:47:25.630 回答