Python Storage.clear方法代码示例

# 需要导入模块: from storage import Storage [as 别名]
# 或者: from storage.Storage import clear [as 别名]
class FORM(DIV):

    """
    example::

        >>> form=FORM(INPUT(_name=\"test\", requires=IS_NOT_EMPTY()))
        >>> form.xml()
        '<form action=\"\" enctype=\"multipart/form-data\" method=\"post\"><input name=\"test\" type=\"text\" /></form>'

    a FORM is container for INPUT, TEXTAREA, SELECT and other helpers

    form has one important method::

        form.accepts(request.vars, session)

    if form is accepted (and all validators pass) form.vars contains the
    accepted vars, otherwise form.errors contains the errors.
    in case of errors the form is modified to present the errors to the user.
    """

    tag = 'form'

    def __init__(self, *components, **attributes):
        if self.tag[-1:] == '/' and components:
            raise SyntaxError, '<%s> tags cannot have components' % self.tag
        if len(components) == 1 and isinstance(components[0], (list,
                tuple)):
            self.components = list(components[0])
        else:
            self.components = list(components)
        self.attributes = attributes
        self._fixup()
        # converts special attributes in components attributes
        self._postprocessing()
        self.vars = Storage()
        self.errors = Storage()
        self.latest = Storage()

    def accepts(
        self,
        vars,
        session=None,
        formname='default',
        keepvalues=False,
        onvalidation=None,
        ):
        self.errors.clear()
        self.request_vars = Storage()
        self.request_vars.update(vars)
        self.session = session
        self.formname = formname
        self.keepvalues = keepvalues

        # if this tag is a form and we are in accepting mode (status=True)
        # check formname and formkey

        status = True
        if self.session and self.session.get('_formkey[%s]'
                 % self.formname, None) != self.request_vars._formkey:
            status = False
        if self.formname != self.request_vars._formname:
            status = False
        status = self._traverse(status)
        if status and onvalidation:
            onvalidation(self)
        if self.errors:
            status = False
        if session != None:
            self.formkey = session['_formkey[%s]' % formname] = web2py_uuid()
        if status and not keepvalues:
            self._traverse(False)
        return status

    def _postprocessing(self):
        if not '_action' in self.attributes:
            self['_action'] = ''
        if not '_method' in self.attributes:
            self['_method'] = 'post'
        if not '_enctype' in self.attributes:
            self['_enctype'] = 'multipart/form-data'

    def hidden_fields(self):
        c = []
        if 'hidden' in self.attributes:
            for (key, value) in self.attributes.get('hidden',
                    {}).items():
                c.append(INPUT(_type='hidden', _name=key, _value=value))
        if hasattr(self, 'formkey') and self.formkey:
            c.append(INPUT(_type='hidden', _name='_formkey',
                     _value=self.formkey))
        if hasattr(self, 'formname') and self.formname:
            c.append(INPUT(_type='hidden', _name='_formname',
                     _value=self.formname))
        return DIV(c, _class="hidden")

    def xml(self):
        newform = FORM(*self.components, **self.attributes)
        hidden_fields = self.hidden_fields()
        if hidden_fields.components:
            newform.append(hidden_fields)
#.........这里部分代码省略.........

# 需要导入模块: from storage import Storage [as 别名]
# 或者: from storage.Storage import clear [as 别名]
 def clear(self):
     previous_session_hash = self.pop('_session_hash', None)
     Storage.clear(self)
     if previous_session_hash:
         self._session_hash = previous_session_hash

# 需要导入模块: from storage import Storage [as 别名]
# 或者: from storage.Storage import clear [as 别名]
class FORM(DIV):

    """
    example::

        >>> from validators import IS_NOT_EMPTY
        >>> form=FORM(INPUT(_name=\"test\", requires=IS_NOT_EMPTY()))
        >>> form.xml()
        '<form action=\"\" enctype=\"multipart/form-data\" method=\"post\"><input name=\"test\" type=\"text\" /></form>'

    a FORM is container for INPUT, TEXTAREA, SELECT and other helpers

    form has one important method::

        form.accepts(request.vars, session)

    if form is accepted (and all validators pass) form.vars contains the
    accepted vars, otherwise form.errors contains the errors.
    in case of errors the form is modified to present the errors to the user.
    """

    tag = "form"

    def __init__(self, *components, **attributes):
        DIV.__init__(self, *components, **attributes)
        self.vars = Storage()
        self.errors = Storage()
        self.latest = Storage()

    def accepts(self, vars, formname="default", keepvalues=False, onvalidation=None, hideerror=False):
        if vars.__class__.__name__ == "Request":
            vars = vars.post_vars
        self.errors.clear()
        self.request_vars = Storage()
        self.request_vars.update(vars)
        self.formname = formname
        self.keepvalues = keepvalues

        # if this tag is a form and we are in accepting mode (status=True)
        # check formname and formkey

        status = True
        status = self._traverse(status, hideerror)
        if onvalidation:
            if isinstance(onvalidation, dict):
                onsuccess = onvalidation.get("onsuccess", None)
                onfailure = onvalidation.get("onfailure", None)
                if onsuccess and status:
                    onsuccess(self)
                if onfailure and vars and not status:
                    onfailure(self)
                    status = len(self.errors) == 0
            elif status:
                if isinstance(onvalidation, (list, tuple)):
                    [f(self) for f in onvalidation]
                else:
                    onvalidation(self)
        if self.errors:
            status = False
        if status and not keepvalues:
            self._traverse(False, hideerror)
        return status

    def _postprocessing(self):
        if not "_action" in self.attributes:
            self["_action"] = ""
        if not "_method" in self.attributes:
            self["_method"] = "post"
        if not "_enctype" in self.attributes:
            self["_enctype"] = "multipart/form-data"

    def hidden_fields(self):
        c = []
        if "hidden" in self.attributes:
            for (key, value) in self.attributes.get("hidden", {}).items():
                c.append(INPUT(_type="hidden", _name=key, _value=value))

        if hasattr(self, "formkey") and self.formkey:
            c.append(INPUT(_type="hidden", _name="_formkey", _value=self.formkey))
        if hasattr(self, "formname") and self.formname:
            c.append(INPUT(_type="hidden", _name="_formname", _value=self.formname))
        return DIV(c, _class="hidden")

    def xml(self):
        newform = FORM(*self.components, **self.attributes)
        hidden_fields = self.hidden_fields()
        if hidden_fields.components:
            newform.append(hidden_fields)
        return DIV.xml(newform)

# 需要导入模块: from storage import Storage [as 别名]
# 或者: from storage.Storage import clear [as 别名]
 def clear(self):
     Storage.clear(self)