Hiya
In my view, I’m using <%= f.file_field :file %>
Problems is, if the form has a validation error, this field is cleared
- and the user has to reselect a file
Does anyone have a solution for this?
thanks
Jason
Does anyone have any ideas?
Is it even possible to fix?
Have been googling, but no luck
jasonb wrote:
In my view, I’m using <%= f.file_field :file %>
Problems is, if the form has a validation error, this field is cleared
- and the user has to reselect a file
Does anyone have a solution for this?
HTML file select controls are always initially blank in Rails,
and this is also enforced by most browsers. This is because
a malicious web page could get you to upload an arbitrary file
by hiding the select from the user.
–
We develop, watch us RoR, in numbers too big to ignore.
Ok but this is after the form his submitted and returned with errors
Can anyone advise of a way to get around this?
I’m not sure of the nature of the object returned by file_field…
does it contain the file path? am I able to re-populate the file
field based on that object?
Maybe I could ask this…
When a form is submitted with file_field… what is the object that
is generated from the file_field?.. and what is the best way to
inspect that object?
For example, if I wanted to output that object with the validation-
errors, for the sake of debugging, how would I do it?
On Feb 4, 2008, at 5:57 PM, jasonb wrote:
Maybe I could ask this…
When a form is submitted with file_field… what is the object that
is generated from the file_field?.. and what is the best way to
inspect that object?
This is how I do it (which I didn’t come up with all my myself) in a
create action of a controller:
data = params[:model].delete('data') # HashWithIndifferentAccess
still needs the actual key type to .delete
params[:dump] = "data=#{data};
filename=#{data.original_filename}; content_type=#{data.content_type}"
if data.blank?
flash[:error] = "No image file selected for upload"
redirect_to :action => 'new' and return
end
content = data.read
if content.blank?
flash[:error] = "Selected upload file was empty"
redirect_to :action => 'new' and return
end
In my case the file is intended to be an image. I think that ‘data’
will be either a StringIO or File object.
That might give you enough to experiment with.
For example, if I wanted to output that object with the validation-
errors, for the sake of debugging, how would I do it?
That’s what I was doing with params[:dump]. In the view (layout?), I
have a <%= debug(params) %> to see what’s going on.
-Rob
HTML file select controls are always initially blank in Rails,
and this is also enforced by most browsers. This is because
a malicious web page could get you to upload an arbitrary file
by hiding the select from the user.–
We develop, watch us RoR, in numbers too big to ignore.