On 26/04/06, Michele Cella <[EMAIL PROTECTED]> wrote:
> Hi Ed,
>
> You've a pretty specific need here.
>
> If you want to use a Widget I suggest you to encapsulate all things
> (fields and layout that in this case is fields dependent) inside a
> widget ready to use.
>
> Example:
>
> class MyFields(WidgetsList):
> name = TextField()
> creditcard = TextField()
>
> class MyForm(TableForm):
> fields = MyFields()
> template = """
> <form xmlns:py="http://purl.org/kid/ns#";
> name="${name}"
> action="${action}"
> method="${method}"
> class="tableform"
> py:attrs="form_attrs"
> >
> <table py:attrs="table_attrs">
> <tr>
> <td colspan="2"><h1>Personal Details</h1></td>
> </tr>
> <tr>
> <td><label for="name">Name</label></td>
> <td>
> <div py:content="display_field_for('name')" />
> <div py:content="error_for('name')" />
> </td>
> </tr>
> <tr>
> <td colspan="2"><h1>Bank Details</h1></td>
> </tr>
> <tr>
> <td><label for="creditcard">Credit Card</label></td>
> <td>
> <div py:content="display_field_for('creditcard')" />
> <div py:content="error_for('creditcard')" />
> </td>
> </tr>
> <tr>
> <td> </td>
> <td py:content="submit.display(submit_text)" />
> </tr>
> </table>
> </form>
> """
>
> to keep in mind, this is only a basic example, since you're defining
> fields content you just instantiate the Form and use it, you don't need
> to pass the fields parameter in this case.
>
> Also since you know in advance fields name you're going to use you
> define labels by yourself and don't need to loop every field by just
> use display_field_for(<field_name_here>) also display field for inside
> a widget template already takes care of passing additional arguments
> like value and params to the field.
The problem with this is that I have to write a template everytime I
need a new form (and I have lots of forms) so I might as well create a
general one that I can pop headings into.
I've got this far:
class Header(FormField):
"A simple header for a form."
template = """
<h1 xmlns:py="http://purl.org/kid/ns#";
class="${field_class}"
py:content="heading"
>Heading
</h1>
"""
params = ["attrs", "heading"]
attrs = {}
class TableForm(Form):
template = """
<form xmlns:py="http://purl.org/kid/ns#";
name="${name}"
action="${action}"
method="${method}"
class="tableform"
py:attrs="form_attrs"
>
<div py:for="field in hidden_fields"
py:replace="field.display(value_for(field), **params_for(field))"
/>
<table>
<tr py:for="i, field in enumerate(fields)"
class="${i%2 and 'odd' or 'even'}"
>
<td py:if="field.header" py:attrs="colspan:2">
<span py:replace="field.display(**params_for(field))" />
</td>
<td py:if="not field.header" py:attrs="colspan:2">
<label class="fieldlabel" for="${field.field_id}"
py:content="field.label" />
</td>
<td py:if="not field.header" py:attrs="colspan:2">
<span py:replace="field.display(value_for(field),
**params_for(field))" />
<span py:if="error_for(field)" class="fielderror"
py:content="error_for(field)" />
<span py:if="field.help_text" class="fieldhelp"
py:content="field.help_text" />
</td>
</tr>
<tr>
<td> </td>
<td py:content="submit.display(submit_text)" />
</tr>
</table>
</form>
"""
params = ["table_attrs"]
table_attrs = {"border": 0,
"cellspacing": 0,
"cellpadding": 2}
But I can't quite get my head around the whole thing. Once I've
worked out how to do it once I should be fine, but that first time
seems quite cryptic (I've read through all the widget source code I
can find).
Any clues on widget creation gratefully received.
Ed
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