202 lines
4.7 KiB
Markdown
202 lines
4.7 KiB
Markdown
# {block}
|
|
|
|
`{block}` is used to define a named area of template source for template
|
|
inheritance. For details see section of [Template
|
|
Inheritance](../../programmers/advanced-features/advanced-features-template-inheritance.md).
|
|
|
|
The `{block}` template source area of a child template will replace the
|
|
corresponding areas in the parent template(s).
|
|
|
|
Optionally `{block}` areas of child and parent templates can be merged
|
|
into each other. You can append or prepend the parent `{block}` content
|
|
by using the `append` or `prepend` option flag with the child's `{block}`
|
|
definition. With `{$smarty.block.parent}` the `{block}` content of
|
|
the parent template can be inserted at any location of the child
|
|
`{block}` content. `{$smarty.block.child}` inserts the `{block}` content
|
|
of the child template at any location of the parent `{block}`.
|
|
|
|
`{blocks}'s` can be nested.
|
|
|
|
## Attributes
|
|
|
|
| Attribute Name | Required | Description |
|
|
|----------------|----------|----------------------------------------------------------------------------------------------------------------------|
|
|
| name | yes | The name of the template source block |
|
|
| assign | no | The name of variable to assign the output of the block to. |
|
|
|
|
> **Note**
|
|
>
|
|
> The assign attribute only works on the block that actually gets executed, so you may need
|
|
> to add it to each child block as well.
|
|
|
|
|
|
## Option Flags (in child templates only):
|
|
|
|
| Name | Description |
|
|
|---------|-----------------------------------------------------------------------------------------|
|
|
| append | The `{block}` content will be appended to the content of the parent template `{block}` |
|
|
| prepend | The `{block}` content will be prepended to the content of the parent template `{block}` |
|
|
| hide | Ignore the block content if no child block of same name is existing. |
|
|
| nocache | Disables caching of the `{block}` content |
|
|
|
|
|
|
## Examples
|
|
|
|
parent.tpl
|
|
|
|
```smarty
|
|
<html>
|
|
<head>
|
|
<title>{block name="title"}Default Title{/block}</title>
|
|
<title>{block "title"}Default Title{/block}</title> {* short-hand *}
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
|
|
child.tpl
|
|
|
|
```smarty
|
|
{extends file="parent.tpl"}
|
|
{block name="title"}
|
|
Page Title
|
|
{/block}
|
|
```
|
|
|
|
|
|
The result would look like
|
|
|
|
```html
|
|
<html>
|
|
<head>
|
|
<title>Page Title</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
parent.tpl
|
|
|
|
```smarty
|
|
<html>
|
|
<head>
|
|
<title>{block name="title"}Title - {/block}</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
|
|
child.tpl
|
|
|
|
```smarty
|
|
{extends file="parent.tpl"}
|
|
{block name="title" append}
|
|
Page Title
|
|
{/block}
|
|
```
|
|
|
|
|
|
The result would look like
|
|
|
|
```html
|
|
<html>
|
|
<head>
|
|
<title>Title - Page Title</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
parent.tpl
|
|
|
|
```smarty
|
|
<html>
|
|
<head>
|
|
<title>{block name="title"} is my title{/block}</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
child.tpl
|
|
|
|
```smarty
|
|
{extends file="parent.tpl"}
|
|
{block name="title" prepend}
|
|
Page Title
|
|
{/block}
|
|
```
|
|
|
|
|
|
The result would look like
|
|
|
|
```html
|
|
<html>
|
|
<head>
|
|
<title>Page title is my titel</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
parent.tpl
|
|
|
|
```smarty
|
|
<html>
|
|
<head>
|
|
<title>{block name="title"}The {$smarty.block.child} was inserted here{/block}</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
child.tpl
|
|
|
|
```smarty
|
|
{extends file="parent.tpl"}
|
|
{block name="title"}
|
|
Child Title
|
|
{/block}
|
|
```
|
|
|
|
The result would look like
|
|
|
|
```html
|
|
<html>
|
|
<head>
|
|
<title>The Child Title was inserted here</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
parent.tpl
|
|
|
|
```smarty
|
|
<html>
|
|
<head>
|
|
<title>{block name="title"}Parent Title{/block}</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
|
|
child.tpl
|
|
|
|
```smarty
|
|
{extends file="parent.tpl"}
|
|
{block name="title"}
|
|
You will see now - {$smarty.block.parent} - here
|
|
{/block}
|
|
```
|
|
|
|
The result would look like
|
|
|
|
```html
|
|
<html>
|
|
<head>
|
|
<title>You will see now - Parent Title - here</title>
|
|
</head>
|
|
</html>
|
|
```
|
|
|
|
See also [Template
|
|
Inheritance](../../programmers/advanced-features/advanced-features-template-inheritance.md),
|
|
[`$smarty.block.parent`](../language-variables/language-variables-smarty.md#smartyblockparent-languagevariablessmartyblockparent),
|
|
[`$smarty.block.child`](../language-variables/language-variables-smarty.md#smartyblockchild-languagevariablessmartyblockchild), and
|
|
[`{extends}`](./language-function-extends.md)
|