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315 lines
7.6 KiB
Markdown
315 lines
7.6 KiB
Markdown
Syntax [RU]
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===========
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Fenom implement [Smarty](http://www.smarty.net/) syntax with some improvements
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## Variable
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### Use variables
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```smarty
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{$foo}
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{$bar}
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{$foo[4]}
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{$foo.4}
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{$foo.bar}
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{$foo.'bar'}
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{$foo."bar"}
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{$foo['bar']}
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{$foo["bar"]}
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{$foo.$bar}
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{$foo[$bar]}
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{$foo->bar}
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{$foo->bar.buz}
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```
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### System variable
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Unnamed system variable starts with `$.` and allow access to global variables and system info (fix doc):
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* `$.get` is `$_GET`.
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* `$.post` is `$_POST`.
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* `$.cookie` is `$_COOKIE`.
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* `$.session` is `$_SESSION`.
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* `$.globals` is `$GLOBALS`.
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* `$.request` is `$_REQUEST`.
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* `$.files` is `$_FILES`.
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* `$.server` is `$_SERVER`.
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* `$.env` is `$_ENV`.
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* `$.tpl.name` returns current template name.
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* `$.tpl.schema` returns current schema of the template.
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* `$.version` returns version of the Fenom.
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* `$.const` paste constant.
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```smarty
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{if $.get.debug? && $.const.DEBUG}
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...
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{/if}
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```
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### Multidimensional value support
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```smarty
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{$foo.bar.baz}
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{$foo.$bar.$baz}
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{$foo[4].baz}
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{$foo[4].$baz}
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{$foo.bar.baz[4]}
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{$foo[ $bar.baz ]}
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```
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### Math operations
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```smarty
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{$x+$y}
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{$foo[$x+3]}
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{$foo[$x+3]*$x+3*$y % 3}
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```
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See all [operators](./operators.md)
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### Object support
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```smarty
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{$object->item}
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{$object->item|upper} {* apply modifier *}
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{$object->item->method($y, 'named')}
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{$object->item->method($y->name, 'named')|upper} {* apply modifier to method result*}
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```
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You may disable call methods in template, see in [security options](./settings.md) option `deny_method`
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### Static method support
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```smarty
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{Lib\Math::multiple x=3 y=4} static method as tag
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{Lib\Math::multiple(3,4)} inline static method
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{12 + Lib\Math::multiple(3,4)}
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{12 + 3|Lib\Math::multiple:4} static method as modifier
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```
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You may disable call static methods in template, see in [security options](./settings.md) option `deny_static`
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### Set variable
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```smarty
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{var $foo = "bar"}
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{var $foo = "bar"|upper} {* apply modifier *}
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{var $foo = 5}
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{var $foo = $x + $y}
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{var $foo = $x.y[z] + $y}
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{var $foo = strlen($a)} {* work with functions *}
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{var $foo = myfunct( ($x+$y)*3 )}
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{var $foo.bar.baz = 1} {* multidimensional value support *}
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{var $foo = $object->item->method($y, 'named')} {* work with object fine *}
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```
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Using block tag
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```smarty
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{var $foo}
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content {$text|truncate:30}
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{/var}
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{var $foo|truncate:50} {* apply modifier to content *}
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content {$text}
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{/var}
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```
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Set array
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```smarty
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{var $foo = [1, 2, 3]} numeric array
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{var $foo = ['y' => 'yellow', 'b' => 'blue']} associative array
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{var $foo = [1, [9, 8], 3]} can be nested
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{var $foo = [1, $two, $three * 3 + 9]}
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{var $foo = [$a, $d.c, $a + $f]}
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{var $foo = ['y' => 'yellow', $color|upper => $colors[ $color ]}
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{var $foo = [1, [$parent, $a->method()], 3]}
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```
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See also [{var}](./tags/var.md) documentation.
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## Scalar values
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### Strings
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When the string in double quotation marks, all the expressions in the string will be run.
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The result of expressions will be inserted into the string instead it.
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```smarty
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{var $foo="Username"}
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{var $user.name="Username"}
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{"Hi, $foo"} outputs "Hi, Username"
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{"Hi, {$foo}"} outputs "Hi, Username"
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{"Hi, {$user.name}"} outputs "Hi, Username"
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{"Hi, {$user.name|up}"} outputs "Hi, USERNAME"
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{"Hi, {$user->getName(true)}"} outputs Hi, Username
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{var $message = "Hi, {$user.name}"}
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```
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but if use single quote any template expressions will be on display as it is
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```smarty
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{'Hi, $foo'} outputs 'Hi, $foo'
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{'Hi, {$foo}'} outputs 'Hi, {$foo}'
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{'Hi, {$user.name}'} outputs 'Hi, {$user.name}'
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{'Hi, {$user.name|up}'} outputs "Hi, {$user.name|up}"
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```
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## Numbers
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```smarty
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{2|pow:10}
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{var $magick = 5381|calc}
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{0.2|round}
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{1e-6|round}
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```
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### Modifiers
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* Modifiers allows change some value before output or using.
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* To apply a modifier, specify the value followed by a `|` (pipe) and the modifier name.
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* A modifier may accept additional parameters that affect its behavior. These parameters follow the modifier name and are separated by a `:` (colon).
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```smarty
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{var $foo="User"}
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{$foo|upper} outputs "USER"
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{$foo|lower} outputs "user"
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{"{$foo|lower}"} outputs "user"
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{"User"|lower}} outputs "user"
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{$looong_text|truncate:80:"..."} truncate the text to 80 symbols and append <continue> symbols, like "..."
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{$looong_text|lower|truncate:$settings.count:$settings.etc}
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{var $foo="Ivan"|upper} sets $foo value "USER"
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```
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[List of modifiers](./main.md#modifiers)
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### Tags
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Basically, tag seems like
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```smarty
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{FUNCNAME attr1 = "val1" attr2 = $val2}
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```
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Tags starts with name and may have attributes
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Это общий формат функций, но могут быть исключения, например функция [{var}](./tags/var.md), использованная выше.
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```smarty
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{include file="my.tpl"}
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{var $foo=5}
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{if $user.loggined}
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Welcome, <span style="color: red">{$user.name}!</span>
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{else}
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Who are you?
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{/if}
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```
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В общем случае аргументы принимают любой формат переменных, в том числе результаты арифметических операций и модификаторов.
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```smarty
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{funct arg=true}
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{funct arg=5}
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{funct arg=1.2}
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{funct arg='string'}
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{funct arg="string this {$var}"}
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{funct arg=[1,2,34]}
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{funct arg=$x}
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{funct arg=$x.c}
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```
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```smarty
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{funct arg="ivan"|upper}
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{funct arg=$a.d.c|lower}
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```
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```smarty
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{funct arg=1+2}
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{funct arg=$a.d.c+4}
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{funct arg=($a.d.c|count+4)/3}
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```
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### Ignoring template code
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В шаблонизаторе Fenom используются фигурные скобки для отделения HTML от кода Fenom.
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Если требуется вывести текст, содержащий фигурные скобки, помните о следующих возможностях:
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1. Использование блочного тега `{ignore}{/ignore}`. Текст внутри этого тега текст не компилируется шаблонизатором и выводится как есть.
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2. Если после открывающей фигурной скобки есть пробельный символ (пробел или `\t`) или перенос строки (`\r` или `\n`), то она не воспринимается как разделитель кода Fenom и код после неё выводится как есть.
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Пример:
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```smarty
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{ignore}
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<style>
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h1 {font-size: 24px; color: #F00;}
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</style>
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{/ignore}
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<script>
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(function (text) {
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var e = document.createElement('P');
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e.innerHTML = text;
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document.body.appendChild(e);
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})('test');
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</script>
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{if:ignore $js_enabled}
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{/if}
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```
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Outputs
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```html
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<style>
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h1 {font-size: 24px; color: #F00;}
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</style>
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<script>
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(function (text) {
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var e = document.createElement('P');
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e.innerHTML = text;
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document.body.appendChild(e);
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})('test');
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</script>
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```
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### Whitespaces
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Шаблонизатор допускает любое количество пробелов или переносов строк в своём коде
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```smarty
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{include 'control.tpl'
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$options = $list
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$name = $cp.name
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$type = 'select'
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isolate = true
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disable_static = true
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}
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{foreach [
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"one" => 1,
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"two" => 2,
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"three" => 3
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] as $key => $val}
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{$key}: {$val}
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{/foreach}
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```
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### Tag options
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| name | code | type | description |
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| ------- | ---- | ----- | ------------ |
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| strip | s | block | |
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| ltrim | l | any | |
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| rtrim | r | any | |
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| trim | t | any | |
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| raw | a | any | |
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| escape | e | any | |
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| ignore | i | block | |
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```smarty
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{script:ignore} ... {/script}
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``` |