Class ViewBlock
ViewBlock implements the concept of Blocks or Slots in the View layer. Slots or blocks are combined with extending views and layouts to afford slots of content that are present in a layout or parent view, but are defined by the child view or elements used in the view.
Constants
Property Summary
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$_active protected
arrayThe active blocks being captured.
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$_blocks protected
arrayBlock content. An array of blocks indexed by name.
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$_discardActiveBufferOnEnd protected
boolShould the currently captured content be discarded on ViewBlock::end()
Method Summary
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active() public
Get the name of the currently open block.
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concat() public
Concat content to an existing or new block. Concating to a new block will create the block.
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end() public
End a capturing block. The compliment to ViewBlock::start()
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exists() public
Check if a block exists
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get() public
Get the content for a block.
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keys() public
Get the names of all the existing blocks.
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set() public
Set the content for a block. This will overwrite any existing content.
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start() public
Start capturing output for a 'block'
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unclosed() public
Get the names of the unclosed/active blocks.
Method Detail
active() ¶ public
active(): string|nullGet the name of the currently open block.
Returns
string|nullconcat() ¶ public
concat(string $name, mixed $value = null, string $mode = ViewBlock::APPEND): voidConcat content to an existing or new block. Concating to a new block will create the block.
Calling concat() without a value will create a new capturing block that needs to be finished with View::end(). The content of the new capturing context will be added to the existing block context.
Parameters
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string$name Name of the block
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mixed$value optional The content for the block
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string$mode optional If ViewBlock::APPEND content will be appended to existing content. If ViewBlock::PREPEND it will be prepended.
Returns
voidend() ¶ public
end(): voidEnd a capturing block. The compliment to ViewBlock::start()
Returns
voidSee Also
exists() ¶ public
exists(string $name): boolCheck if a block exists
Parameters
-
string$name Name of the block
Returns
boolget() ¶ public
get(string $name, string $default = ''): stringGet the content for a block.
Parameters
-
string$name Name of the block
-
string$default optional Default string
Returns
stringset() ¶ public
set(string $name, mixed $value): voidSet the content for a block. This will overwrite any existing content.
Parameters
-
string$name Name of the block
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mixed$value The content for the block.
Returns
voidstart() ¶ public
start(string $name, string $mode = ViewBlock::OVERRIDE): voidStart capturing output for a 'block'
Blocks allow you to create slots or blocks of dynamic content in the layout. view files can implement some or all of a layout's slots.
You can end capturing blocks using View::end(). Blocks can be output using View::get();
Parameters
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string$name The name of the block to capture for.
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string$mode optional If ViewBlock::OVERRIDE existing content will be overridden by new content. If ViewBlock::APPEND content will be appended to existing content. If ViewBlock::PREPEND it will be prepended.
Returns
voidThrows
Cake\Core\Exception\ExceptionWhen starting a block twice