django -生成一个验证表单的dajaxice函数(dajaxice_register问题)

Question

我想做一个泛型函数，用dajaxice实时验证模型表单。

下面是我所做的：

exafeeds/ajax.py

from django.core.exceptions import ValidationError                                  
from django.utils import simplejson                                                 

from dajaxice.decorators import dajaxice_register

def gen_validate_model(models_module):

    @dajaxice_register
    def validate_model(request, model, fields):
        errors = {}

        tmp_model = getattr(models_module, model)()

        for (field, value) in fields.items():
            setattr(tmp_model, field, value)

        try:
            tmp_model.clean_fields()
        except ValidationError, err:
            errs = err.message_dict

            for field in fields:
                errors[field] = errs.get(field)

        return simplejson.dumps(errors)

    return validate_model

accounts/ajax.py

from exafeeds.ajax import gen_validate_model

import accounts.models

validate_model = gen_validate_model(accounts.models)

和js调用：

Dajaxice.accounts.validate_model(check_validity_callback, {
    'model': 'User',
    'fields': {
        'username': username,
        'email': email
    }
});

但是当我收到一个JS错误，告诉我Dajaxice.accounts是未定义的。

dajaxice_register装饰器显然放错了地方，但是我应该把它放在哪里呢？

编辑。我尝试用下面的代码替换dajaxice_register装饰器：

validate_model = gen_validate_model(accounts.models)
validate_model = dajaxice_register(validate_model)

但这并没有改变任何事情

Answer 1

我找到了一个解决方案，但它看起来很脏。如果能有更好的解决方案，我会很感激。

exafeeds/ajax.py

from django.core.exceptions import ValidationError
from django.utils import simplejson

def gen_validate_model(models_module):

    def validate_model(request, model, fields):
        errors = {}

        tmp_model = getattr(models_module, model)()

        for (field, value) in fields.items():
            setattr(tmp_model, field, value)

        try:
            tmp_model.clean_fields()
        except ValidationError, err:
            errs = err.message_dict

            for field in fields:
                errors[field] = errs.get(field)

        return simplejson.dumps(errors)

    return validate_model

accounts/ajax.py

from dajaxice.decorators import dajaxice_register

from exafeeds.ajax import gen_validate_model

import accounts.models

@dajaxice_register
def validate_model(request, model, fields):
    return gen_validate_model(accounts.models)(request, model, fields)

但是函数生成器变得无用，所以它可以简化为：

exafeeds/ajax.py

def gen_validate_model(models_module, request, model, fields):
    errors = {}

    tmp_model = getattr(models_module, model)()

    for (field, value) in fields.items():
        setattr(tmp_model, field, value)

    try:
        tmp_model.clean_fields()
    except ValidationError, err:
        errs = err.message_dict

        for field in fields:
            errors[field] = errs.get(field)

    return simplejson.dumps(errors)

accounts/ajax.py

@dajaxice_register
def validate_model(request, model, fields):
    return gen_validate_model(accounts.models, request, model, fields)

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