Control Blocks

Control Blocks are for composing an HTML form with Compute layout block.

Arakawa supports various control blocks.

ar.TextBox("text")

ar.NumberBox("number")

ar.RangeField(name="range", min_=0, max_=100, step=10)

ar.SwitchField("switch")

ar.FileField("file")

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/multimethod/__init__.py:350, in multimethod.__call__(self, *args, **kwargs)
    349 try:
--> 350     return func(*args, **kwargs)
    351 except TypeError as ex:

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/view/visitors.py:93, in PreProcess._(self, b)
     90 self.in_collapsible_group = isinstance(b, Blocks) or (
     91     isinstance(b, bk.Group) and b.columns == 1
     92 )
---> 93 _ = b.traverse(self)
     94 self.merge_text()

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/blocks/layout.py:68, in ContainerBlock.traverse(self, visitor)
     66 def traverse(self, visitor: VV) -> VV:
     67     # perform a depth-first traversal of the contained blocks
---> 68     return reduce(
     69         lambda _visitor, block: block.accept(_visitor), self.blocks, visitor
     70     )

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/blocks/layout.py:69, in ContainerBlock.traverse.<locals>.<lambda>(_visitor, block)
     66 def traverse(self, visitor: VV) -> VV:
     67     # perform a depth-first traversal of the contained blocks
     68     return reduce(
---> 69         lambda _visitor, block: block.accept(_visitor), self.blocks, visitor
     70     )

TypeError: 'NoneType' object is not callable

The above exception was the direct cause of the following exception:

DispatchError                             Traceback (most recent call last)
File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/IPython/core/formatters.py:984, in IPythonDisplayFormatter.__call__(self, obj)
    982 method = get_real_method(obj, self.print_method)
    983 if method is not None:
--> 984     method()
    985     return True

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/blocks/base.py:61, in BaseBlock._ipython_display_(self)
     58 from arakawa.view import Blocks
     60 if get_environment().support_rich_display:
---> 61     html_str = stringify_report(Blocks(self))
     62     display(HTML(html_str))
     63 else:

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/processors/api.py:95, in stringify_report(blocks, name, formatting, cdn_base, resizable, standalone)
     82 klass = (
     83     ExportHTMLStringInlineAssets
     84     if resizable
     85     else ExportHTMLStringInlineNonResizableAssets
     86 )
     87 export = klass(
     88     name=name or "Report",
     89     formatting=formatting,
     90     cdn_base=cdn_base,
     91     standalone=standalone,
     92 )
     93 return (
     94     Pipeline(s)
---> 95     .pipe(PreProcessView(is_finalized=True))
     96     .pipe(ConvertPydantic())
     97     .pipe(export)
     98     .result
     99 )

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/processors/types.py:56, in Pipeline.pipe(self, p)
     54 def pipe(self, p: BaseProcessor[P_IN, P_OUT]) -> Pipeline[P_OUT]:
     55     p.s = self._state
---> 56     y = p.__call__(self._x)  # need to call as positional args
     57     self._state = p.s
     58     return Pipeline(self._state, y)

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/processors/processors.py:67, in PreProcessView.__call__(self, _)
     65 # Block-API visitors
     66 pp = PreProcess(is_finalized=self.is_finalized)
---> 67 v.accept(pp)
     68 v1 = pp.root
     69 # v1 = copy(v)
     70 
     71 # update the processor state

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/blocks/base.py:67, in BaseBlock.accept(self, visitor)
     66 def accept(self, visitor: VV) -> VV:
---> 67     visitor.visit(self)
     68     return visitor

File ~/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/multimethod/__init__.py:352, in multimethod.__call__(self, *args, **kwargs)
    350     return func(*args, **kwargs)
    351 except TypeError as ex:
--> 352     raise DispatchError(f"Function {func.__code__}") from ex

DispatchError: Function <code object _ at 0x55b09af50720, file "/home/runner/work/arakawa/arakawa/docs/.venv/lib/python3.11/site-packages/arakawa/view/visitors.py", line 79>

<arakawa.blocks.controls.FileField at 0x7fb4db913390>

ar.DateTimeField("date-time")

API References¶

Check out the API Reference to know details: