Google App Engine上传到TextArea（没有blobstore） [英] Google App Engine Upload to TextArea (without the blobstore)
问题描述
这是我的表单看起来像
< div class =section hiddenid =file_choice>
< form action =postenctype =multipart / form-data>
选择您要上传或转换的'.CSV'文件。
< br>
< input type =fileid =fileinname =filecsv/>
< br>
< i>如果您不确定如何将您的文件转换为csv，请点击此处< a hred =/ instructions>< / a> < I> /;
< br>
< input type =Submitname =submit_final/>
< br>
或者，您可以使用此文本框从任何编辑器复制粘贴。
< / form>
< / div>
继承我的代码的样子，
<$
$ b $ w
#wraps response.out.write，以方便输入
def write（self，* a，* * kw）：
self.response.out.write（* a，** kw）
＃以字符串形式显示模板
def render_str（self，template，* * params）：
t = jinja_env.get_template（template）
return t.render（params）
使用write $ b $ ，模板，** kw）：
self.write（self.render_str（template，** kw））
class MainHandler（Handler）：
def get（self） ：
self.render（'parseForm.html'）
def post（self）：
test = self.request.POST ['filecsv']。getvalue（）
self .render（'parseForm.html'，myFile = test，error =ERRORRRR）
现在textarea获取输出作为文件名。
gae上的文件上传非常模糊。 webapp2文件中的唯一行：
lockquote
上传的文件可以直接使用cgi.FieldStorage（请参阅cgi模块）
实例在request.POST。
我要跟随这个帖子与我自己的问题，但如果你使用：
test = self.request.POST ['filecsv']。pre>
而不是
getvalue（）（它会为我引发一个错误），那么您将看到呈现的输出的csv文件。I'm trying to get simple file reading in GAE python. I want to allow users to upload a csv file directly from their disk and have it display in a text field. I am having an outrageous amount of trouble doing so. Any help would be appreciated. I would prefer to avoid using the blobstore if possible. I don't want to save the data forever, I just want to use it to allow people to fill the textarea easily.
Here's what my form looks like
<div class = "section hidden" id ="file_choice"> <form action="post"enctype="multipart/form-data"> Choose a '.CSV' file you want to upload or convert. <br> <input type = "file" id = "filein" name = "filecsv"/> <br> <i>if you are unsure how to convert your file to csv click <a hred = "/instructions">here</a> </i> <br> <input type="Submit" name="submit_final"/> <br> Alternatively you can use this text box to copy paste from any editor. <textarea name="txtcsv" cols="150" rows="30">{{myFile}}</textarea> </form> </div>Heres what my code looks like,
class Handler(webapp2.RequestHandler): #wraps response.out.write for ease of typing def write(self, *a, **kw): self.response.out.write(*a,**kw) #renders a template as a string def render_str(self,template,**params): t = jinja_env.get_template(template) return t.render(params) #renders the template to screen using write def render(self,template,**kw): self.write(self.render_str(template,**kw)) class MainHandler(Handler): def get(self): self.render('parseForm.html') def post(self): test =self.request.POST['filecsv'].getvalue() self.render('parseForm.html',myFile=test,error="ERRORRRR")Right now the textarea gets output as the filename.
解决方案The docs on file uploads for gae are pretty vague. The only line in the webapp2 doc:
Uploaded files are available as cgi.FieldStorage (see the cgi module) instances directly in request.POST.
I'm going to follow this post with my own question on the subject, but if you use:
test = self.request.POST['filecsv'].valueinstead of
getvalue()(which throws an error for me), then you will see the rendered output of your csv file.这篇关于Google App Engine上传到TextArea（没有blobstore）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！
