45 lines
1.7 KiB
Plaintext
45 lines
1.7 KiB
Plaintext
|
# render-template
|
||
|
|
|
||
|
|
`{{render-template 'template string' vars}}` is used to interpolate some dynamic
|
||
|
|
variables into a string and produce a string output as a result i.e. a micro,
|
||
|
|
regex based, template engine. For example:
|
||
|
|
|
||
|
|
```hbs preview-template
|
||
|
|
<figure>
|
||
|
|
{{render-template 'http://localhost/?service={{Service.Name}}&datacenter={{Datacenter}}'
|
||
|
|
(hash
|
||
|
|
Datacenter="dc1"
|
||
|
|
Service=(hash
|
||
|
|
Name="Hello-Service"
|
||
|
|
)
|
||
|
|
)
|
||
|
|
}}
|
||
|
|
<figcaption>^ that is the rendered template</figcaption>
|
||
|
|
</figure>
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
Additionally the variables passed into the template are automatically URL
|
||
|
|
encoded as our primary usecase for this is for creating dynamic links/URLs. If
|
||
|
|
we ever need to reuse this without URL encoding, then an option could be added
|
||
|
|
as a named argument to disable/turn that off. In which case, encode should be
|
||
|
|
default and a knob provided to turn it off (at the time of writing our primary
|
||
|
|
usecase is to encode).
|
||
|
|
|
||
|
|
Currently supported separators are mustache style `{{VariableName}}`, although
|
||
|
|
we would like to add Javascript style `${VariableName}` separators in the future
|
||
|
|
and transition to default to those whilst remaining backwards compatible.
|
||
|
|
Mustache style are a documentated user 'feature' for some Consul config, so we
|
||
|
|
should be mindful of that.
|
||
|
|
|
||
|
|
**Please note:** Our `uri` helper (that is used extensively in the UI) also uses
|
||
|
|
some of the underlying functionality of `render-template` via our `encoder`
|
||
|
|
service.
|
||
|
|
|
||
|
|
## Positional Arguments
|
||
|
|
|
||
|
|
| Argument | Type | Default | Description |
|
||
|
|
| --- | --- | --- | --- |
|
||
|
|
| `template` | `String` | | A template string for the variables to be interpolated into |
|
||
|
|
| `vars` | `Object` | | An object/hash of variables to URL encode and interpolate into the template string |
|