Magento 电子邮件模板 If 语句 [英] Magento Email Template If Statements

问题描述

Magento 电子邮件模板 If Statements 在我期望的时候没有评估为 true.有人可以告诉我出了什么问题吗?看看下面的代码:

The Magento Email Template If Statements aren't evaluating to true when I expect them to. Can someone tell me what's wrong? Take a look at the following code:

{{var customer.group_id}}
{{if customer.group_id}}Print true{{else}}Print false{{/if}}
{{if customer.group_id==4}}Print true{{else}}Print false{{/if}}
{{if customer.group_id=4}}Print true{{else}}Print false{{/if}}
{{if customer.group_id eq 4}}Print true{{else}}Print false{{/if}}

输出是

4
Print True
Print False
Print False
Print False

我尝试在 4 周围加上引号，但结果相同.如何使用 magento 电子邮件模板 if 语句评估相等性?

I tried putting quotes around the 4, but same result. How do I evaluate equalities with magento email template if statements?

推荐答案

翻开代码，看起来模板逻辑是由Varien_Filter_Template(在libVarien not appcode下)实现的filter 函数，如果模式与正则表达式匹配，它会向 ifDirective 函数发出回调.ifDirective 反过来使用 _getVariable 函数来评估您的 if 条件._getVariable 然后将 Varien_Filter_Template_Tokenizer_Variable 中的条件标记为属性或方法.

Digging through the code, it looks like the template logic is implemented by Varien_Filter_Template (under libVarien not appcode) in the filter function which issues a callback to the ifDirective function if the pattern matches the regex. The ifDirective in turn uses the _getVariable function to evaluate your if condition. _getVariable then tokenizes the condition in Varien_Filter_Template_Tokenizer_Variable into either a property or a method.

if($this->isWhiteSpace()) {
            // Ignore white spaces
            continue;
        } else if($this->char()!='.' && $this->char()!='(') {
            // Property or method name
            $parameterName .= $this->char();
        } else if($this->char()=='(') {
            // Method declaration
            $methodArgs = $this->getMethodArgs();
            $actions[] = array('type'=>'method',
                               'name'=>$parameterName,
                               'args'=>$methodArgs);
            $parameterName = '';
        } else if($parameterName!='') {
            // Property or variable declaration
            if($variableSet) {
                $actions[] = array('type'=>'property',
                                   'name'=>$parameterName);
            } else {
                $variableSet = true;
                $actions[] = array('type'=>'variable',
                                   'name'=>$parameterName);
            }
            $parameterName = '';
        }

当检测到if条件是一个方法时，它会执行那个方法，否则它只是简单地返回变量的字符串值.

When the if condition is detected to be a method, it will execute that method, otherwise it simply returns the string value of the variable.

所有这些都意味着(我认为！)如果您想评估 if 语句中的表达式，您需要添加模板可以评估的新客户属性(有可用的扩展).因此，如果您定义了一个布尔值isMemberOfGroupNameX"属性，那么模板应该可以工作.

All of which means (I think!) that if you want to evaluate an expression inside the if statement, you need to add a new customer attribute (there are extensions available for this) that the template can evaluate. So if you define a boolean "isMemberOfGroupNameX" attribute, then the template should work.

我想这不是您要寻找的答案，但我很确定情况确实如此.

I imagine this is not the answer that you're looking for, but I'm fairly sure that's the case.

HTH，京东

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