如何将上载文件字段添加到Wagtail表单中? [英] How can I add an Upload File field to a Wagtail Form?
问题描述
我想使文件上载成为表单页面上可能的Wagtail表单字段类型。如何配置模型以实现此目的?请注意,我对允许用户上传PDF之类的文档文件而不是图像更感兴趣。
这是很棒的文章。下面的代码直接从文章中获取(但是如果有文章,请在此处复制),但是,您可能希望按照该文章逐步解释所有内容。
此刻涉及到很多事情,您需要:
- 扩展
AbstractFormField
定义新的字段类型。 - 扩展
FormBuilder
以处理新的字段类型。 - 在您的FormPage上将
form_builder
设置为自定义的FormBuilder
类。 - 覆盖FormPage上的
serve
方法,将文件数据传递到表单(仅当您使用Wagtail 1.12及以下版本时,因为它会自动从 W 1.13 ) - 覆盖
process_form_submission
处理文件
这是完整的代码:
从wagtail.wagtailforms.models导入AbstractFormField,FORM_FIELD_CHOICES
从wagtail.wagtailforms.forms导入FormBuilder
从wagtail.wagtailimages.fields导入WagtailImageField
def filename_to_title(文件名):
从os.path导入splitext
如果文件名:
结果= splitext(文件名)[0]
结果= result.replace('-','').replace('_','')
返回result.title()
类FormField(AbstractFormField):
FORM_FIELD_CHOICES = list(FORM_FIELD_CHOICES)+ [('image','Upload Image')]
field_type = models.CharField(
verbose_name = _('field type'),
max_length = 16,
选择= FORM_FIELD_CHOICES)
页面= ParentalKey('FormPage',related_name ='form_fields')
class ExtendedFormBuilder(FormBuilder):
def create_image_upload_field(self,field,options):
return WagtailImageField(** options)
FIELD_TYPES = FormBuilder.FIELD_TYPES
FIELD_TYPES.update({
'image':create_image_upload_field,
})
class FormPage(AbstractEmailForm):
form_builder = ExtendedFormBuilder
def serve(self,request,* args,** kwargs):
if request.method =='POST':
#form = self .get_form(request.POST,page = self,user = request.user)#原始行
form = self.get_form(request.POST,request.FILES,page = self,user = request.user)
if form.is_valid():
self.process_form_submission(form)
return render(
request,
self.get_landing_page_template(request),
self.get_context(request)
)
else:
的形式= self.get_form(page = self,user = request.user)
context = self。 get_context(request)
context ['for m'] =表单
return render(
request,
self.get_template(request),
context
)
def process_form_submission(自我,形式):
cleaned_data = form.cleaned_data
for name,form.fields.iteritems():
if isinstance(field,WagtailImageField):
image_file_data = cleaned_data [name]
如果image_file_data:
ImageModel = get_image_model()
image = ImageModel(
file = cleaned_data [name],
title = filename_to_title( cleaned_data [name] .name),
collection = self.upload_image_to_collection,
#假设总有一个用户-将会失败,否则
upload_by_user = form.user,
)
image.save()
cleaned_data.update({name:image.id})
else:
#从数据中删除值
del cleaned_data [name]
form_data = json。 dumps(cleaned_data,cls = DjangoJSONEncoder)
submitt_object = dict(
页面=自我,
form_data = form_data,
用户= form.user,
)
简介= RichTextField(空白=真实)
Thank_you_text = RichTextField(空白=真实)
FormPage.content_panels = [
FieldPanel('title',classname = 完整标题),
FieldPanel('intro',classname = full),
InlinePanel('form_fields',label = Form字段),
FieldPanel('thank_you_text' ,classname = full),
MultiFieldPanel([
FieldRowPanel([
FieldPanel('from_address',classname = col6)),
FieldPanel('to_address',classname = col6),
]),
FieldPanel('subject'),
],电子邮件),
]
以下是(未试用的)代码,用于处理文档而不是图像:
from django.forms从wagtail.wagtaildocs.models导入FileField
导入get_document_model
#其他导入
类FormField(AbstractFormField):
FORM_FIELD_CHOICES = list(FORM_FIELD_CHOICES)+ [ ('document','Upload Document')]
#`field_type`和`page`保持不变
类ExtendedFormBuilder(FormBuilder):
def create_document_upload_field( self,field,options):
return FileField(** options)
FIELD_TYPES = FormBuilder.FIELD_TYPES
FIELD_TYPES.update({
'document':create_document_upload_field,
})
类FormPage(AbstractEmailForm):
# form_builder属性和 serve保持不变。
def process_form_submission(self,form):
cleaned_data = form.cleaned_data
for name,form.fields.iteritems()中的字段:
如果isinstance(field,FileField):
document_file_data = cleaned_data [name]
if document_file_data:
DocumentModel = get_document_model()
document = DocumentModel(
file = cleaned_data [ name],
title = filename_to_title(cleaned_data [name] .name),
#假设总有一个用户-将会失败,否则
upload_by_user = form.user,
)
document.save()
cleaned_data.update({name:document.id})
else:
#从数据中删除值
del cleaned_data [name]
#The r函数的其余部分不变
I want to make File Upload a possible Wagtail Form field type on form pages. How do I configure the models to make this possible? Please note I am more interested in allowing users to upload document files like PDFs rather than images.
Here is a great article from LB Johnson on that matter. The code below is directly taken from the article (but copying here in case the article goes away), however you might want to follow the article as it explains everything step by step.
It's quite involved at the moment, you'll need to:
- extend
AbstractFormField
to define a new field type. - extend
FormBuilder
to deal with the new field type. - set
form_builder
to your customFormBuilder
class on your FormPage . - override the
serve
method on the FormPage to pass the file data to the form (only if you use Wagtail 1.12 and below as it does it automatically from Wagtail 1.13) - override the
process_form_submission
to process the file
Here is the full code:
from wagtail.wagtailforms.models import AbstractFormField, FORM_FIELD_CHOICES
from wagtail.wagtailforms.forms import FormBuilder
from wagtail.wagtailimages.fields import WagtailImageField
def filename_to_title(filename):
from os.path import splitext
if filename:
result = splitext(filename)[0]
result = result.replace('-', ' ').replace('_', ' ')
return result.title()
class FormField(AbstractFormField):
FORM_FIELD_CHOICES = list(FORM_FIELD_CHOICES) + [('image', 'Upload Image')]
field_type = models.CharField(
verbose_name=_('field type'),
max_length=16,
choices=FORM_FIELD_CHOICES)
page = ParentalKey('FormPage', related_name='form_fields')
class ExtendedFormBuilder(FormBuilder):
def create_image_upload_field(self, field, options):
return WagtailImageField(**options)
FIELD_TYPES = FormBuilder.FIELD_TYPES
FIELD_TYPES.update({
'image': create_image_upload_field,
})
class FormPage(AbstractEmailForm):
form_builder = ExtendedFormBuilder
def serve(self, request, *args, **kwargs):
if request.method == 'POST':
# form = self.get_form(request.POST, page=self, user=request.user) # Original line
form = self.get_form(request.POST, request.FILES, page=self, user=request.user)
if form.is_valid():
self.process_form_submission(form)
return render(
request,
self.get_landing_page_template(request),
self.get_context(request)
)
else:
form = self.get_form(page=self, user=request.user)
context = self.get_context(request)
context['form'] = form
return render(
request,
self.get_template(request),
context
)
def process_form_submission(self, form):
cleaned_data = form.cleaned_data
for name, field in form.fields.iteritems():
if isinstance(field, WagtailImageField):
image_file_data = cleaned_data[name]
if image_file_data:
ImageModel = get_image_model()
image = ImageModel(
file=cleaned_data[name],
title=filename_to_title(cleaned_data[name].name),
collection=self.upload_image_to_collection,
# assumes there is always a user - will fail otherwise
uploaded_by_user=form.user,
)
image.save()
cleaned_data.update({name: image.id})
else:
# remove the value from the data
del cleaned_data[name]
form_data = json.dumps(cleaned_data, cls=DjangoJSONEncoder)
submission_object = dict(
page=self,
form_data=form_data,
user=form.user,
)
intro = RichTextField(blank=True)
thank_you_text = RichTextField(blank=True)
FormPage.content_panels = [
FieldPanel('title', classname="full title"),
FieldPanel('intro', classname="full"),
InlinePanel('form_fields', label="Form fields"),
FieldPanel('thank_you_text', classname="full"),
MultiFieldPanel([
FieldRowPanel([
FieldPanel('from_address', classname="col6"),
FieldPanel('to_address', classname="col6"),
]),
FieldPanel('subject'),
], "Email"),
]
Here is the (untested) code to handle a document instead of an image:
from django.forms import FileField
from wagtail.wagtaildocs.models import get_document_model
# Other imports
class FormField(AbstractFormField):
FORM_FIELD_CHOICES = list(FORM_FIELD_CHOICES) + [('document', 'Upload Document')]
# `field_type` and `page` remain unchanged
class ExtendedFormBuilder(FormBuilder):
def create_document_upload_field(self, field, options):
return FileField(**options)
FIELD_TYPES = FormBuilder.FIELD_TYPES
FIELD_TYPES.update({
'document': create_document_upload_field,
})
class FormPage(AbstractEmailForm):
# `form_builder` attribute and `serve` remain unchanged.
def process_form_submission(self, form):
cleaned_data = form.cleaned_data
for name, field in form.fields.iteritems():
if isinstance(field, FileField):
document_file_data = cleaned_data[name]
if document_file_data:
DocumentModel = get_document_model()
document = DocumentModel(
file=cleaned_data[name],
title=filename_to_title(cleaned_data[name].name),
# assumes there is always a user - will fail otherwise
uploaded_by_user=form.user,
)
document.save()
cleaned_data.update({name: document.id})
else:
# remove the value from the data
del cleaned_data[name]
# The rest of the function is unchanged
这篇关于如何将上载文件字段添加到Wagtail表单中?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!