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Add last steps of contributing guide

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matcornic
2017-03-30 22:06:40 +02:00
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233
CONTRIBUTING.md
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@ -20,12 +20,15 @@ This file contains instructions on adding themes to Mailgen:
* [Creating a Built-In Theme](#creating-a-built-in-theme) * [Creating a Built-In Theme](#creating-a-built-in-theme)
> We use Golang templates under the hood to inject the e-mail body into themes. > We use Golang templates under the hood to inject the e-mail body into themes.
> - [Official guide](https://golang.org/pkg/text/template/)
> - [Tutorial](https://astaxie.gitbooks.io/build-web-application-with-golang/en/07.4.html)
> - [Hugo guide](https://gohugo.io/templates/go-templates/)
### Using a Custom Theme ### Using a Custom Theme
If you want to supply your own **custom theme** for Hermes to use (but don't want it included with Mailgen): If you want to supply your own **custom theme** for Hermes to use (but don't want it included with Mailgen):
1. Create a new struct implementing `Theme` interface ([hermes.go](hermes.go)). An real-life example is in [default.go](default.go) 1. Create a new struct implementing `Theme` interface ([hermes.go](hermes.go)). A real-life example is in [default.go](default.go)
2. Supply your new theme at hermes creation 2. Supply your new theme at hermes creation
```go ```go
@ -70,11 +73,11 @@ If you want to create a new **built-in** Mailgen theme:
1. Fork the repository to your GitHub account and clone it to your computer 1. Fork the repository to your GitHub account and clone it to your computer
2. Create a new Go file named after your new theme 2. Create a new Go file named after your new theme
3. Copy content of [default.go](default.go) file in new file and make any necessary changes 3. Copy content of [default.go](default.go) file in new file and make any necessary changes
6. Scroll down to the [injection snippets](#injection-snippets) and copy and paste each code snippet into the relevant area of your template markup 4. Scroll down to the [injection snippets](#injection-snippets) and copy and paste each code snippet into the relevant area of your template markup
7. Test the theme by running the `examples/*.js` scripts (insert your theme name in each script) and observing the template output in `preview.html` 5. Test the theme by adding the theme to slice of tested themes (see [hermes_test.go](hermes_test.go)). A set of tests will be run to check that your theme follows features of Hermes.
8. Take a screenshot of your theme portraying each example and place it in `screenshots/{theme}/{example}.png` 6. Create examples in new folder for your theme in `examples` folder and run `go run *.go`. It will generate the different `html` and `plaintext` emails for your different examples. Follow the same examples as default theme (3 examples: Welcome, Reset and Receipt)
9. Add the theme name, credit, and screenshots to the `README.md` file's [Supported Themes](README.md#supported-themes) section (copy one of the existing themes' markup and modify it accordingly) 7. Add the theme name, credit, and screenshots to the `README.md` file's [Supported Themes](README.md#supported-themes) section (copy one of the existing themes' markup and modify it accordingly)
7. Submit a pull request with your changes and we'll let you know if anything's missing! 8. Submit a pull request with your changes and we'll let you know if anything's missing!
Thanks again for your contribution! Thanks again for your contribution!
@ -85,12 +88,12 @@ Thanks again for your contribution!
The following will inject either the product logo or name into the template. The following will inject either the product logo or name into the template.
```html ```html
<a href="<%- product.link %>" target="_blank"> <a href="{{.Hermes.Product.Link}}" target="_blank">
<% if (locals.product.logo) { %> {{ if .Hermes.Product.Logo }}
<img src="<%- product.logo %>" class="email-logo" /> <img src="{{.Hermes.Product.Logo}}" class="email-logo" />
<% } else { %> {{ else }}
<%- product.name %> {{ .Hermes.Product.Name }}
<% } %> {{ end }}
</a> </a>
``` ```
@ -107,7 +110,7 @@ It's a good idea to add the following CSS declaration to set `max-height: 50px`
The following will inject the e-mail title (Hi John Appleseed,) or a custom title provided by the user: The following will inject the e-mail title (Hi John Appleseed,) or a custom title provided by the user:
```html ```html
<%- title %> <h1>{{if .Email.Body.Title }}{{ .Email.Body.Title }}{{ else }}{{ .Email.Body.Greeting }} {{ .Email.Body.Name }},{{ end }}</h1>
``` ```
## Intro Injection ## Intro Injection
@ -115,11 +118,13 @@ The following will inject the e-mail title (Hi John Appleseed,) or a custom titl
The following will inject the intro text (string or array) into the e-mail: The following will inject the intro text (string or array) into the e-mail:
```html ```html
<% if (locals.intro) { %> {{ with .Email.Body.Intros }}
<% intro.forEach(function (introItem) { -%> {{ if gt (len .) 0 }}
<p><%- introItem %></p> {{ range $line := . }}
<% }) -%> <p>{{ $line }}</p>
<% } %> {{ end }}
{{ end }}
{{ end }}
``` ```
## Dictionary Injection ## Dictionary Injection
@ -127,15 +132,16 @@ The following will inject the intro text (string or array) into the e-mail:
The following will inject a `<dl>` of key-value pairs into the e-mail: The following will inject a `<dl>` of key-value pairs into the e-mail:
```html ```html
<!-- Dictionary --> {{ with .Email.Body.Dictionary }}
<% if (locals.dictionary) { %> {{ if gt (len .) 0 }}
<dl class="dictionary"> <dl class="body-dictionary">
<% for (item in dictionary) { -%> {{ range $entry := . }}
<dt><%- item.charAt(0).toUpperCase() + item.slice(1) %>:</dt> <dt>{{ $entry.Key }}:</dt>
<dd><%- dictionary[item] %></dd> <dd>{{ $entry.Value }}</dd>
<% } -%> {{ end }}
</dl> </dl>
<% } %> {{ end }}
{{ end }}
``` ```
It's a good idea to add this to the top of the template to improve the styling of the dictionary: It's a good idea to add this to the top of the template to improve the styling of the dictionary:
@ -165,37 +171,55 @@ The following will inject the table into the e-mail:
```html ```html
<!-- Table --> <!-- Table -->
<% if (locals.table) { %> {{ with .Email.Body.Table }}
<table class="data-table" width="100%" cellpadding="0" cellspacing="0"> {{ $data := .Data }}
<tr> {{ $columns := .Columns }}
<% for (var column in table.data[0]) {%> {{ if gt (len $data) 0 }}
<th <table class="data-wrapper" width="100%" cellpadding="0" cellspacing="0">
<% if(locals.table.columns && locals.table.columns.customWidth && locals.table.columns.customWidth[column]) { %> <tr>
width="<%= table.columns.customWidth[column] %>" <td colspan="2">
<% } %> <table class="data-table" width="100%" cellpadding="0" cellspacing="0">
<% if(locals.table.columns && locals.table.columns.customAlignment && locals.table.columns.customAlignment[column]) { %> <tr>
style="text-align:<%= table.columns.customAlignment[column] %>" {{ $col := index $data 0 }}
<% } %> {{ range $entry := $col }}
> <th
<p><%- column.charAt(0).toUpperCase() + column.slice(1) %></p> {{ with $columns }}
</th> {{ $width := index .CustomWidth $entry.Key }}
<% } %> {{ with $width }}
</tr> width="{{ . }}"
<% for (var i in table.data) {%> {{ end }}
<tr> {{ $align := index .CustomAlignement $entry.Key }}
<% for (var column in table.data[i]) {%> {{ with $align }}
<td style="text-align:{{ . }}"
<% if(locals.table.columns && locals.table.columns.customAlignment && locals.table.columns.customAlignment[column]) { %> {{ end }}
style="text-align:<%= table.columns.customAlignment[column] %>" {{ end }}
<% } %> >
> <p>{{ $entry.Key }}</p>
<%- table.data[i][column] %> </th>
{{ end }}
</tr>
{{ range $row := $data }}
<tr>
{{ range $cell := $row }}
<td
{{ with $columns }}
{{ $align := index .CustomAlignement $cell.Key }}
{{ with $align }}
style="text-align:{{ . }}"
{{ end }}
{{ end }}
>
{{ $cell.Value }}
</td>
{{ end }}
</tr>
{{ end }}
</table>
</td> </td>
<% } %> </tr>
</tr> </table>
<% } %> {{ end }}
</table> {{ end }}
<% } %>
``` ```
It's a good idea to add this to the top of the template to improve the styling of the table: It's a good idea to add this to the top of the template to improve the styling of the table:
@ -234,30 +258,40 @@ It's a good idea to add this to the top of the template to improve the styling o
The following will inject the action link (or button) into the e-mail: The following will inject the action link (or button) into the e-mail:
```html ```html
<!-- Action --> {{ with .Email.Body.Actions }}
<% if (locals.action) { %> {{ if gt (len .) 0 }}
<% action.forEach(function (actionItem) { -%> {{ range $action := . }}
<p><%- actionItem.instructions %></p> <p>{{ $action.Instructions }}</p>
<a href="<%- actionItem.button.link %>" style="color:<%- actionItem.button.color %>" target="_blank"> <table class="body-action" align="center" width="100%" cellpadding="0" cellspacing="0">
<%- actionItem.button.text %> <tr>
</a> <td align="center">
<% }) -%> <div>
<% } %> <a href="{{ $action.Button.Link }}" class="button" style="background-color: {{ $action.Button.Color }}" target="_blank">{{ $action.Button.Text }}</a>
</div>
</td>
</tr>
</table>
{{ end }}
{{ end }}
{{ end }}
``` ```
It's a good idea to add this to the top of the template to specify a fallback color for the action buttons in case it wasn't provided by the user: A good practice is to describe action in footer in case of problem when displaying button and CSS
```html ```html
<% {{ with .Email.Body.Actions }}
if (locals.action) { <table class="body-sub">
// Make it possible to override action button color (specify fallback color if no color specified) <tbody><tr>
locals.action.forEach(function(actionItem) { {{ range $action := . }}
if (!actionItem.button.color) { <td>
actionItem.button.color = '#48CFAD'; <p class="sub">If you’re having trouble with the button '{{ $action.Button.Text }}', copy and paste the URL below into your web browser.</p>
} <p class="sub"><a href="{{ $action.Button.Link }}">{{ $action.Button.Link }}</a></p>
}); </td>
} {{ end }}
%> </tr>
</tbody>
</table>
{{ end }}
``` ```
## Outro Injection ## Outro Injection
@ -265,11 +299,13 @@ if (locals.action) {
The following will inject the outro text (string or array) into the e-mail: The following will inject the outro text (string or array) into the e-mail:
```html ```html
<% if (locals.outro) { %> {{ with .Email.Body.Outros }}
<% outro.forEach(function (outroItem) { -%> {{ if gt (len .) 0 }}
<p><%- outroItem %></p> {{ range $line := . }}
<% }) -%> <p>{{ $line }}</p>
<% } %> {{ end }}
{{ end }}
{{ end }}
``` ```
## Signature Injection ## Signature Injection
@ -277,9 +313,9 @@ The following will inject the outro text (string or array) into the e-mail:
The following will inject the signature phrase (e.g. Yours truly) along with the product name into the e-mail: The following will inject the signature phrase (e.g. Yours truly) along with the product name into the e-mail:
```html ```html
<%- signature %>, {{.Email.Body.Signature}},
<br /> <br>
<%- product.name %> {{.Hermes.Product.Name}}
``` ```
## Copyright Injection ## Copyright Injection
@ -287,30 +323,7 @@ The following will inject the signature phrase (e.g. Yours truly) along with the
The following will inject the copyright notice into the e-mail: The following will inject the copyright notice into the e-mail:
```html ```html
<%- product.copyright %> {{.Hermes.Product.Copyright}}
```
## Go-To Action Injection
In order to support Gmail's [Go-To Actions](https://developers.google.com/gmail/markup/reference/go-to-action), add the following anywhere within the template:
```html
<!-- Support for Gmail Go-To Actions -->
<% if (locals.goToAction) { %>
<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "EmailMessage",
"potentialAction": {
"@type": "ViewAction",
"url": "<%- goToAction.link %>",
"target": "<%- goToAction.link %>",
"name": "<%- goToAction.text %>"
},
"description": "<%- goToAction.description %>"
}
</script>
<% } %>
``` ```
## Text Direction Injection ## Text Direction Injection
@ -318,6 +331,6 @@ In order to support Gmail's [Go-To Actions](https://developers.google.com/gmail/
In order to support generating RTL e-mails, inject the `textDirection` variable into the `<body>` tag: In order to support generating RTL e-mails, inject the `textDirection` variable into the `<body>` tag:
```html ```html
<body dir="<%- textDirection %>"> <body dir="{{.Hermes.TextDirection}}">
``` ```

10
default.go
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@ -331,11 +331,11 @@ func (dt *Default) HTMLTemplate() string {
{{ end }} {{ end }}
{{ end }} {{ end }}
<p> <p>
{{.Email.Body.Signature}}, {{.Email.Body.Signature}},
<br> <br>
{{.Hermes.Product.Name}} {{.Hermes.Product.Name}}
</p> </p>
{{ with .Email.Body.Actions }} {{ with .Email.Body.Actions }}
<table class="body-sub"> <table class="body-sub">