邮件动态模板

Engagelab Email 动态模板支持 Handlebars 模板语言来呈现您通过 API 发送的个性化内容。

变量替换

基础替换

模板示例

Hello {{firstname}}

          <p>Hello {{firstname}}</p>

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测试数据

{ "firstName": "Engagelab" }

          { "firstName": "Engagelab" }

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渲染结果

Hello Engagelab

          <p>Hello Engagelab</p>

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嵌套对象替换

模板示例

Hello {{user.profile.firstName}}

          <p>Hello {{user.profile.firstName}}</p>

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测试数据

{ "user": { "profile": { "firstName": "Engagelab" } } }

          {
    "user": {
        "profile": {
            "firstName": "Engagelab" 
        }
    }
}

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渲染结果

Hello Engagelab

          <p>Hello Engagelab</p>

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formatDate

formatDate 接收 Unix 时间戳或 ISO8601 格式的时间，并使用下表中的标记将其转换为您指定的格式。以 UTC 时间 1987-09-20T20:55:00.000Z 为例，转换展示结果如下表：

占位符	展示结果
YYYY	1987
YY	87
MMMM	September
MMM	Sep
MM	09
M	9
DD	20
D	20
dddd	Sunday
ddd	Sun
hh	08
h	8
HH	20
H	20
mm	55
m	55
ss	00
s	0
A	PM
ZZ	+0000
Z	+00:00

模板示例

{{formatDate timeStamp dateFormat}}  {{formatDate timeStamp dateFormat timezoneOffset}}

          <p>{{formatDate timeStamp dateFormat}}</p>
<!-- 时区偏移示例 -->
<p>{{formatDate timeStamp dateFormat timezoneOffset}}</p>

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测试数据

{ "timeStamp": "1987-09-20T12:55:00.000Z", "dateFormat": "YYYY-MM-DD HH:mm:ss A", "timezoneOffset": "+0800" }

          {
  "timeStamp": "1987-09-20T12:55:00.000Z",
  "dateFormat": "YYYY-MM-DD HH:mm:ss A",
  "timezoneOffset": "+0800"
}

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渲染结果

1987-09-20 12:55:00 PM  1987-09-20 20:55:00 PM

          <!-- 渲染结果（模板一） -->
<p>1987-09-20 12:55:00 PM</p>

<!-- 渲染结果（模板二） -->
<p>1987-09-20 20:55:00 PM</p>

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Insert

模板示例

Thank you for contacting us about {{insert businessName "your business"}}.

          <p>Thank you for contacting us about {{insert businessName "your business"}}.</p>

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测试数据

// 测试数据一 {} // 测试数据一 { "businessName": "Engagelab" }

          // 测试数据一
{}

// 测试数据一
{
    "businessName": "Engagelab"
}

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渲染结果

Hello Ben! Thank you for contacting us about your business.  Hello Customer! Thank you for contacting us about Engagelab.

          <!-- 渲染结果一 -->
<p>Hello Ben! Thank you for contacting us about your business.</p>

<!-- 渲染结果二 -->
<p>Hello Customer! Thank you for contacting us about Engagelab.</p>

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条件语句

If, Else, Else If

模板示例

{{#if user.profile.isTeacher}} Hello, Teacher {{user.profile.firstName}} {{else if user.profile.isStudent}} Hello, Student {{user.profile.firstName}} {{else}} Hello, {{user.profile.firstName}}! Welcome. {{/if}}

          {{#if user.profile.isTeacher}}
   <p>Hello, Teacher {{user.profile.firstName}}</p>
{{else if user.profile.isStudent}}
   <p>Hello, Student {{user.profile.firstName}}</p>
{{else}}
   <p>Hello, {{user.profile.firstName}}! Welcome.</p>
{{/if}}

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测试数据

// 测试数据一 { "user": { "profile": { "firstName": "Zhang San", "isTeacher": true } } } // 测试数据二 { "user": { "profile": { "firstName": "Li Si", "isStudent": true } } } // 测试数据三 { "user": { "profile": { "firstName": "Wang Wu", } } }

          // 测试数据一
{
    "user": {
        "profile": {
            "firstName": "Zhang San",
            "isTeacher": true
        }
    }
}

// 测试数据二
{
    "user": {
        "profile": {
            "firstName": "Li Si",
            "isStudent": true
        }
    }
}

// 测试数据三
{
    "user": {
        "profile": {
            "firstName": "Wang Wu",
        }
    }
}

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渲染结果

Hello, Teacher Zhang San  Hello, Student Li Si  Hello, Wang Wu! Welcome.

          <!-- 渲染结果（测试数据一） -->
<p>Hello, Teacher Zhang San</p>

<!-- 渲染结果（测试数据二） -->
<p>Hello, Student Li Si</p>

<!-- 渲染结果（测试数据三） -->
<p>Hello, Wang Wu! Welcome.</p>

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Unless

模板示例

{{#unless license}} WARNING: This entry does not have a license! {{/unless}}

          {{#unless license}}
    <p class="warning">WARNING: This entry does not have a license!</p>
{{/unless}}

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测试数据

{}

{}

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渲染结果

WARNING: This entry does not have a license!

          <!-- 渲染结果 -->
<p class="warning">WARNING: This entry does not have a license!</p>

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比较运算符

比较运算符支持两种使用方式：basic 和 with else

支持的语法如下表所示：

表达式	说明
greaterThan	>
lessThan	<
equals	=
greaterThanOrEquals	>=
lessThanOrEquals	<=
notEquals	!=

basic

模板示例

{{#greaterThan truckWeight limitWeight}} The truck is not allowed to pass. {{/greaterThan}}

          <p> 
{{#greaterThan truckWeight limitWeight}}
The truck is not allowed to pass.
{{/greaterThan}}
</p>

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测试数据

{ "truckWeight": 6, "limitWeight": 5 }

          {
    "truckWeight": 6,
    "limitWeight": 5
}

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渲染结果

The truck is not allowed to pass.

          <p> 
The truck is not allowed to pass.
</p>

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with else

模板示例

{{#greaterThan truckWeight limitWeight}} The truck is not allowed to pass. {{else}} The truck is allowed to pass. {{/greaterThan}}

          <p> 
{{#greaterThan truckWeight limitWeight}}
The truck is not allowed to pass.
{{else}}
The truck is allowed to pass.
{{/greaterThan}}
</p>

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测试数据

{ "truckWeight": 5, "limitWeight": 5 }

          {
    "truckWeight": 5,
    "limitWeight": 5
}

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渲染结果

The truck is allowed to pass.

          <p> 
The truck is allowed to pass.
</p>

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in, notIn

与比较运算符一样支持两种使用方式：basic 和 with else

模板示例

{{#in fruit favoriteFruits}} Like to eat. {{else}} Do not like to eat. {{/in}}

          <p>
{{#in fruit favoriteFruits}}
Like to eat.
{{else}}
Do not like to eat.
{{/in}}
</p>

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测试数据

// 测试数据一 { "fruit": "Apple", "favoriteFruits": [ "Apple", "Banana", "Orange" ] } // 测试数据二 { "fruit": "Grape", "favoriteFruits": [ "Apple", "Banana", "Orange" ] }

          // 测试数据一
{
    "fruit": "Apple",
    "favoriteFruits": [
        "Apple",
        "Banana",
        "Orange"
    ]
}

// 测试数据二
{
    "fruit": "Grape",
    "favoriteFruits": [
        "Apple",
        "Banana",
        "Orange"
    ]
}

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渲染结果

Like to eat.  Do not like to eat.

          <!-- 渲染结果一 -->
<p>
Like to eat.
</p>

<!-- 渲染结果二 -->
<p>
Do not like to eat.
</p>

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迭代

循环（Each）

模板示例

<ul> {{#each fruits}} <li>{{this}}</li> {{/each}} </ul>

          <ul>
{{#each fruits}}
    <li>{{this}}</li>
{{/each}}
</ul>

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测试数据

{ "fruits": [ "Apple", "Banana", "Orange" ] }

          {
    "fruits": [
        "Apple",
        "Banana",
        "Orange"
    ]
}

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渲染结果

<ul> <li>Apple</li> <li>Banana</li> <li>Orange</li> </ul>

          <ul>
    <li>Apple</li>
    <li>Banana</li>
    <li>Orange</li>
</ul>

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补充说明

当使用 each 遍历数组时，可以使用 {{@index}} 引用当前循环索引

{{#each array}} {{@index}}: {{this}} {{/each}}

          {{#each array}} {{@index}}: {{this}} {{/each}}

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此外，对于对象迭代，{{@key}} 引用当前键名

{{#each object}} {{@key}}: {{this}} {{/each}}

          {{#each object}} {{@key}}: {{this}} {{/each}}

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With 语法

模板示例

{{#with user.profile}} Hello {{firstName}} {{/with}}

          {{#with user.profile}}
<p>Hello {{firstName}}</p>
{{/with}}

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测试数据

{ "user": { "profile": { "firstName": "Engagelab" } } }

          {
    "user": {
        "profile": {
            "firstName": "Engagelab" 
        }
    }
}

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渲染结果

Hello Engagelab

          <p>Hello Engagelab</p>

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