On a Windows machine, when I look at any mp3-file and look at the properties of that file (mark the mp3, right click, properties), there are various subfields for the title, subtitle, artist, album, etc.
I am looking for a way to access these properties and change them. For instance, some files may indicate that the artist is "GreatArtist", whereas other files indicate "The GreatArtist" or "Great Artist".
I know I can change all of them manually by selecting all files that corespond to the same artist, right click and entering everything manually. I am looking for a way to automate this though so that it becomes easy for many folders, artists, and files, and R is my software of choice.
How can I access these properties using R? file.info() does not display these properties.
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I've been tinkering with ASP.NET and Blazor to upload files to a server.
<InputFile
OnChange="OnInputFileChange"
multiple
accept="#GetAcceptedFileTypes()"
/>
The multiple property allows me to select more than one file type. I figured out that you can limit the number of files that the app will accept by setting the argument in InputFileChangeEventArgs.GetMultipleFiles() in the #code block; exceeding that limit will throw an exception.
It's cool that you can set that hard limit, but is there a way to prevent the user from accidentally selecting more files that they're supposed to? For example, the accept property makes it so that the upload window only shows the file types that you specify (unless they switch it to All Files (*.*)) so that they're not trying to upload invalid file types. Is there a similar functionality for the count?
I don't know what all of the available properties for InputFile are. I was hoping there'd be a list of them, like that documentation I linked. For C#, it's easy to find classes, methods, and/or parameters available. My Googling has come up short.
I am attempting to randomly loop through ~1400 mp4 files in a Qualtrics survey. Each respondent would see one of these files. I understand how to do this for images, using a Loop and Merge and:
img src="https://survey.qualtrics.com/ControlPanel/Graphic.php?IM=${lm://Field/1}"
However, the Field/1 links to the Qualtrics IDs that are in the image library and mp4's are in the files library. I do not know where to find those.
It is a little bit of a pain, but first click one of the files and View it. The URL at the top will have the ID at the very end. Go back to your list and open the inspect tool. Search for the ID. The first one you find is a large list of text. They are all in there.
If i have a directory with a few hardlinks all pointing to files outside the directory, will a change to one of the hardlinks affect the USN journal associated with the directory or will it affect the USN journal of the original directory which contains the actual file to which the hardlinks are linked at the time of their creation?
The journal will get an entry when you add the hard-link USN_REASON_HARD_LINK_CHANGE. Then as time goes on, any of the hard links may be opened, and changes made. The subsequent USN entries will all reference the original file's FileReferenceNumber, but will contain FileName and ParentFileReferenceNumber that depend on which link was actually opened. This is what you have available to distinguish between links. Note that it might be tempting to distinguish using only the ParentFileReferenceNumber, but this isn't really safe. While the most widely used pattern is to have the same-named link in different directories, you could have a link in the same directory but with a different name.
Note on moved links: If you choose to read the USN in "summary mode" (your READ_USN_JOURNAL_DATA_V0 has ReturnOnlyOnClose = 1), where you only read the entries that have accumulated to the point of the file closing, you can miss the USN_REASON_RENAME_OLD_NAME entries...and lose track of which link the rename was made through. This kind of USN record doesn't accumulate into the file close event...I'm guessing because of the potential collision of ParentFileReferenceNumber and FileName.
I am using riak (and riak search) to store and index text files. For every file I create a riak object (the text content of the file is the object value) and save it to a riak bucket. That bucket is configured to use the default search analyzer.
I would like to store (and be able to search by) some metadata for these files. Like date of submission, size etc.
So I have asked on IRC, and also given it quite some thought.
Here are some solutions, though they are not as good as I would like:
I could have a second "metadata" object that stores the data in question (maybe in another bucket), have it indexed etc. But that is not a very good solution especially if I want to be able to do combined searches like value:someword AND date:somedate
I could put the contents of the file inside a JSON object like: {"date":somedate, "value":"some big blob of text"}. This could work, but it's going to put too much load on the search indexer, as it will have to first deserialize a big json object (and those files are sometimes quite big).
I could write a custom analyzer/indexer that reads my file object and generates/indexes the metadata in question. The only real problem here is that I have a hard time finding documentation on how to do that. And it is probably going to be a bit of an operational PITA as I will need to push some erlang code to every riak node (and remember to do that when I update the cluster, when I add new nodes etc.) I might be wrong on this, if so, please, correct me.
So the best solution for me would be if I could alter the riak search index document, and add some arbitrary search fields to it, after it gets generated. Is this possible, is this wise, and is there support for this in libraries etc.? I can certainly modify the document in question "manually", as a bucket with index documents gets automatically created, but as I said, I just don't know what's the right thing to do.
I have a node type with multiple file attachments and would like a node view to show the latest file attached to the node.
In Views, I have options to sort by node:updated or revision:vid, but of course they don't tell me which file was added last. Is there a way to sort by the updated time of a field?
And, more generally, is there a way to find information about changes to parts of a node.
There is no revision records for individual CCK fields that I've ever heard of. I think I saw a blog entry about someone thinking of writing a module for it.
Here's how you get the file upload date into a View:
Create a Relationship with the particular FileField you are interested in.
In Fields there will now be a File category. It includes File Upload Date.
In Sort criteria there is also a File Upload Date.
If you also restrict your View to a single node, that should do it.