Hey guys,
I am trying to create a helper to distinguish wether a field that
employs the use of file_colum is empty or not for the purpose of a
users personal image.
The reason that i am doing this is because when displaying the records
i am presented with the following error:
You have a nil object when you didn''t expect it!
The error occurred while evaluating nil.PHOTO_relative_path
...when calling the PHOTO field with this code:
<%= image_tag url_for_file_column("user", "PHOTO") %>
This is because some users do not have an uploaded photo.
What i want to do is to work out whether or not the PHOTO field is
empty or not and act accordingly. If the field has a url to an image
then display that image using the image_tag else if the field is empty
i want to either insert the url of a default image or just force the
system to automatically display the default image.
Based on the way that file_colum works im going to guess it is easier
to just point the system to an image location if the field is empty
instead of trying to force a url into the db record.
Ok i am a bit of a newby at this so can someone confirm to me that
this would indeed be achieved with a helper or would this code go
somewhere else?
I have been toying with the following:
<% if collector.PHOTO.blank? %>
<%= image_tag("/images/avatar_thumb.jpg") %>
<% else %>
<%= image_tag("#{collector.PHOTO}") %>
<% end %>
...which works interms of determining if the field is blank or not but
it does not display the image if the field is not empty. In order to
do that i would have to use the call i had been previously using:
<%= image_tag url_for_file_column("user", "PHOTO") %>
...but this then throws up the initial error again. Plus i know that
this is in the List view at current and im sure it would be tidier to
do it somewhere else.
Cheers in advance for any help.
Pete
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