Activestorage
Gloufy
How to persist file upload fields after a rails validation error with activestorage and activescaffold ? https://stackoverflow.com/questions/15680484/how-to-persist-file-upload-fields-after-a-rails-validation-error
Sergio Cambra
ActiveStorage bridge was a contribution, I didn't write it, I haven't tried ActiveStorage yet. However, I can see form_ui is calling helper for list and show actions to display content, as other bridges related to file upload do.
Form_ui has this line:
content = active_scaffold_column_active_storage_has_one(record, column) if active_storage.attached?
That line display content with same helper as list and show. And that helper, active_scaffold_column_active_storage_has_one method has this line:
attachment.attached? ? link_for_attachment(attachment) : nil
But link_for_attachment doesn't display thumbnail:
def link_for_attachment(attachment)
link_to(attachment.filename, rails_blob_url(attachment, disposition: 'attachment'), target: '_blank')
end
I think that helper method must be changed to display thumbnail, as other bridges do. Carrierwave bridge display thumbnail, and thumbnail style name can be changed in bridge config. Paperclip do it in same way. Dragonfly do it in same way too, but it allows to set :thumb option in column's options. What is code to display thumbnail with ActiveStorage?
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Gloufy
How to persist file upload fields after a rails validation error with activestorage and activescaffold ? )
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Sergio Cambra
I think you can override that helper in your controller helper, or ApplicationHelper. I think it should work as dragonfly does, there should be a thumbnail_variant setting in ActiveScaffold::Bridges::ActiveStorage::ActiveStorageBridgeHelpers, default to something like {resize_to_limit: [nil, 30]} to use same values as dragonfly bridge.
I have added this to master branch. However, I have checked docs for activestorage in rails 5.2 and I don't see resize_to_limit option, did it changed in 6.0?
I'm not sure what you want about the other question. Do you want to keep uploaded file so user doesn't need to upload it again? Or do you want to have input file prefilled so user doesn't have to browse file to upload again? The former, I don't know, does it rails save attachment into active_storage_blobs table? It could be orphaned if form is not submitted again. The latter, I think it isn't possible, I think browser doesn't allow to set value attribute for input file tag.
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Sergio Cambra
A way could be using JS to display error messages instead of replacing form, although fields won't get any class to highlight them with CSS, unless JS make some changes to existing fields too.
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Gloufy
module ActiveScaffold
module Bridges
class ActiveStorage
module ActiveStorageBridgeHelpers
mattr_accessor :thumbnail_variant
self.thumbnail_variant = {resize_to_limit: [nil, 30]} to {resize_to_limit: [nil, 350]}
Sergio Cambra
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Gloufy
Did you mean? ActiveStorageVariant
Sergio Cambra
active_storage_helpers.rb, which has thumbnail_variant mattr accessor.
I was out of home and I couldn't test it before answering. I have tested now
and ActiveStorageBridgeHelpers is not loaded yet when initializer runs. You
could add require 'active_scaffold/bridges/active_storage/
active_storage_helpers' in initializer before that line, but I guess it should
be fixed in ActiveScaffold. I could add autoload lines in lib/active_scaffold/
bridges/active_storage.rb, but I guess it's better to define the setting in
ActiveScaffold::Bridges::ActiveStorage class.
I have changed thumbnail_variant definition in master branch, you can update
and use this line in initializer:
ActiveScaffold::Bridges::ActiveStorage.thumbnail_variant = {resize_to_limit:
[nil, 350]}
Regards,
Sergio
El jueves, 13 de enero de 2022 21:16:28 (CET) Gloufy escribió:
> i'v got a error config/initializers/active_scaffold.rb:3:in `<main>':
> ActiveScaffold::Bridges::ActiveStorage::ActiveStorageBridgeHelpers
> (**NameError**)*
>
> *Did you mean? ActiveStorageVariant*
> >>> -fields-after-a-rails-validation-error> with activestorage and
> >>> -fields-after-a-rails-validation-error> with activestorage and
> >>> https://stackoverflow.com/questions/15680484/how-to-persist-file-upload-> >>> fields-after-a-rails-validation-error
> >>>
> >>>
> >>> Thank you for your help
> >>>
> >>>
> >>> Gloufy
> >>>
> >>>
> >>> an email to activescaffol...@googlegroups.com.
> >>>
> >>>
> >>> To view this discussion on the web visit
> >>> https://groups.google.com/d/msgid/activescaffold/3bf5a081-ede1-4402-bf52
> >>> -1f518063b4af%40googlegroups.com
> >>> 52-1f518063b4af%40googlegroups.com?utm_medium=email&utm_source=footer> .
> >>>
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> >>> bf-ff91e0ae92a2%40googlegroups.com?utm_medium=email&utm_source=footer> .
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Gloufy
Sergio Cambra
Hi
Nice it's working. I found how to rotate image with imagemagick, I don't know if it's something you can use:
I don't think ActiveScaffold works with rails 7.0 yet, I haven't tested, but every version usually has some issues.
Regards