如何创建具有多个模式的z3c.form？

Question

我正在使用cms Plone来构建一个包含两个其他模式的表单。

使用Group Forms，我能够包含两个模式的两个字段。但是，它们会丢失所有属性，例如隐藏或当我使用datagridfield构建表时。我希望能够做的是将这两种形式与它们的字段一起保存并且保存能够将它们保存在链接被点击为父对象的对象中 - ＆gt;对象1 [表单顶部] - ＆gt;对象2 [表单底部]

这是我的python代码：

class QuestionPart(group.Group):
    label = u'Question Part'
    fields = field.Fields(IQuestionPart)
    template = ViewPageTemplateFile('questionpart_templates/view.pt')

 class Question(group.Group):
     label = u'Question'
     fields = field.Fields(IQuestion)
     template = ViewPageTemplateFile('question_templates/view.pt')

class QuestionSinglePart(group.GroupForm, form.AddForm):
    grok.name('register')
    grok.require('zope2.View')
    grok.context(ISiteRoot)
    label = u"Question with Single Part"

    ignoreContext = True
    enable_form_tabbing  = False

    groups = (Question,QuestionPart)

def update(self):
    super(QuestionSinglePart, self).update()

此代码显示IQuestion，IQuestionPart的字段，而不考虑如下形式：form.mode（contype ='hidden'）或DataGridField小部件。 我发现了一种用字段提示显示正确形式的方法。

class QuestionSinglePart(AutoExtensibleForm, form.AddForm):
    grok.require('zope2.View')
    grok.context(ISiteRoot)

    label = u"Question"
    schema = IQuestion
    additionalSchemata = (IQuestionPart,)                             

我觉得我还有很长的路要走。我和一些人谈过了。我现在正在尝试使用单独的表单和视图。

到目前为止，我正在使用我的代码：

class QuestionSinglePartForm(AutoExtensibleForm, form.Form):

    ignoreContext = True

    autoGroups = True
    template = ViewPageTemplateFile('questionsinglepart_templates/questionsinglepartform.pt')

    @property
    def additionalSchemata(self):
        return self._additionalSchemata

    def __init__(self, context, request, schema, additional=()):
        self.context = context
        self.request = request
        if not IInterface.providedBy(schema):
            raise ValueError('Schema is not interface object')
        self._schema = schema
        if not all(IInterface.providedBy(s) for s in additional):
            raise ValueError('Additional schema is not interface')
        self._additionalSchemata = additional

class QuestionSinglePartView(object):

    schema = IQuestion
    additional = (IQuestionPart,)

    def __init__(self, context, request):
        self.context = context
        self.request = request
        self.form = QuestionSinglePartForm(context, request, self.schema, self.additional)

    def magic(self, data, errors):
        pass
        """
        question = Question()
        question.number = data['number']
        question.questionContent = data['questionContent']

        questionPart = QuestionPart()
        questionPart.typeOfQuestion = data['IQuestionPart.typeOfQuestion']
        questionPart.explanation = data['IQuestionPart.explanation'] 
        questionPart.fileSize = data['IQuestionPart.fileSize']
        questionPart.fileType = data['IQuestionPart.fileType']
        questionPart.hints = data['IQuestionPart.hints']
        questionPart.table = data['IQuestionPart.table']
        questionPart.contype = data['IQuestionPart.contype']
        questionPart.content = data['IQuestionPart.content']
        """

    def update(self, *args, **kwargs):
        if self.request.get('REQUEST_METHOD') == 'POST':
            data, errors = self.form.extractData()
            self.magic(data, errors)
        self.formdisplay = self.form.render()

    def __call__(self, *args, **kwargs):
        self.update(*args, **kwargs)
        return self.index(*args, **kwargs)

我正在努力渲染表单，而QuestionSinglePart对象没有索引属性。

在与一些plone开发人员合作几个小时之后，我们已经知道发生了什么。

我遗漏了：

    @property
    def schema(self):
        return self._schema

我需要在视图中定义索引，如下所示：

index = ViewPageTemplateFile('questionsinglepart_templates/questionsinglepart.pt')

我需要将其添加到视图 init ：

alsoProvides(self.form, IWrappedForm)

在视图的更新方法中，我需要在formdisplay之前调用它。我也可以删除数据提取并将其移动到表单。

def update(self, *args, **kwargs):
    self.form.update(*args, **kwargs)
    self.formdisplay = self.form.render()

我目前仍在努力将数据保存到对象中。

Answer 1

只有包含plone.autoform.base.AutoExtensibleForm mixin的表单类才会注意架构表单提示。尝试将此作为mixin添加到您的Group表单类中（并提供此mixin查找的schema属性，而不是fields）：

from plone.autoform.base import AutoExtensibleForm

class QuestionPart(AutoExtensibleForm, group.Group):
    label = u'Question Part'
    schema = IQuestionPart
    template = ViewPageTemplateFile('questionpart_templates/view.pt')

Answer 2

以下是我上面所做更改的最终代码。对象的索引存在问题。我需要创建一个简单的自定义视图。我在表单上忘记了架构的属性。我还需要更改视图的更新方法。

class QuestionSinglePartForm(AutoExtensibleForm, form.Form):

    ignoreContext = True

    autoGroups = False

    @property
    def schema(self):
        return self._schema

    @property
    def additionalSchemata(self):
        return self._additionalSchemata

    def __init__(self, context, request, schema, additional=()):
        self.context = context
        self.request = request
        if not IInterface.providedBy(schema):
            raise ValueError('Schema is not interface object')
        self._schema = schema
        if not all(IInterface.providedBy(s) for s in additional):
            raise ValueError('Additional schema is not interface')
        self._additionalSchemata = additional

    @button.buttonAndHandler(u'Save')
    def handleSave(self, action):
        data, errors = self.extractData()
        if errors:
            return False
        obj = self.createAndAdd(data)
        if obj is not None:
            # mark only as finished if we get the new object
            self._finishedAdd = True
            IStatusMessage(self.request).addStatusMessage(_(u"Changes saved"), "info")
        print data

    @button.buttonAndHandler(u'Cancel')
    def handleCancel(self, action):
        print 'cancel'



class QuestionSinglePartView(object):

    schema = IQuestion
    additional = (IQuestionPart,)
    index = ViewPageTemplateFile('questionsinglepart_templates/questionsinglepart.pt')

    def __init__(self, context, request):
        self.context = context
        self.request = request
        self.form = QuestionSinglePartForm(context, request, self.schema, self.additional)
        alsoProvides(self.form, IWrappedForm)

    def magic(self, data, errors):
        pass
        """
        question = Question()
        question.number = data['number']
        question.questionContent = data['questionContent']

        questionPart = QuestionPart()
        questionPart.typeOfQuestion = data['IQuestionPart.typeOfQuestion']
        questionPart.explanation = data['IQuestionPart.explanation'] 
        questionPart.fileSize = data['IQuestionPart.fileSize']
        questionPart.fileType = data['IQuestionPart.fileType']
        questionPart.hints = data['IQuestionPart.hints']
        questionPart.table = data['IQuestionPart.table']
        questionPart.contype = data['IQuestionPart.contype']
        questionPart.content = data['IQuestionPart.content']
        """

    def update(self, *args, **kwargs):
        self.form.update(*args, **kwargs)
        self.formdisplay = self.form.render()

    def __call__(self, *args, **kwargs):
        self.update(*args, **kwargs)
        return self.index(*args, **kwargs)