Class S3ResourceHeader

Constructor

@param fields: the fields to display, list of lists of
               fieldnames, Field instances or callables
@param tabs: the tabs
@param title: the title fieldname, Field or callable

Fields are specified in order rows->cols, i.e. if written
like:

[
    ["fieldA", "fieldF", "fieldX"],
    ["fieldB", None, "fieldY"]
]

then that's exactly the screen order. Row or column spans are
not supported - empty fields will be rendered as empty fields.
If you need to construct more complex rheaders, you should
implement a custom method.

Fields can be specified by field names, Field instances or
as callables. Where a field specifier is a callable, it will
be invoked with the record as parameter and is respected to
return the representation value.

Where a field specifier is a tuple of two items, the first
item is taken for the label (overriding the field label, if
any), like in:


[
    [(T("Name"), s3_fullname)],
    ...
]

Where the second item is a callable, it maybe necessary to
specify a label.

If you don't want any fields, specify this explicitly as:

    rheader = S3ResourceHeader(fields=[])

Where you don't specify any fields and the table contains a
"name" field, the rheader defaults to: [["name"]].

Overrides: object.__init__

Return the HTML representation of this rheader

Parameters:

• r - the S3Request instance to render the header for
• tabs - the tabs (overrides the original tabs definition)
• table - override r.table
• record - override r.record
• as_div - True: will return the rheader_fields and the rheader_tabs together as a DIV False will return the rheader_fields and the rheader_tabs as a tuple (rheader_fields, rheader_tabs)

Render an rheader field

Parameters:

• table - the table
• record - the record
• col - the column spec (field name or tuple (label, fieldname))

Returns:

tuple (label, value)