Hi Carl,

Thank you for your reply. This definitely helps me get started, my question being:

trans.history will get all the dataset ids in users history regardless of which run the datasets are associated with. Hence if the user has multiple bams loaded in history there will be no way of distinguishing them.

Here is a rough idea of what I am envisioning my pipeline to do:

Galaxy pipeline runs -> while it is running, dataset ids that are generated should be retrieved for each output (in my case bams and JSON file) -> when main pipeline finishes, ids are updated within the JSON file -> all the outputs are fed to users history.

this way there will be no ambiguity as to which bams are being accessed for viz. Is this intermediate way of getting dataset ids possible? 

Thank you

-Asma

On Wed, Aug 19, 2015 at 4:27 PM, Carl Eberhard <carlfeberhard@gmail.com> wrote:

Hi, Asma

If you're looking through datasets via the mako part of your visualization, you can use:

users_current_history = trans.history
dataset_ids = [ trans.security.encode_id( d.id ) for d in users_current_history.datasets ]

(or similar) to build the ids needed for the urls.

If you want to get the info via javascript, you can use something like the python above and template into a js var:

var url = "/datasets/${ dna_dataset_id }/display?to_ext=bam"

...or encode and template the history id and use ajax and the api after the page is served:

var historyId = "${ trans.security.encode_id( trans.history.id ) }";
jQuery.ajax( galaxy_config.root + 'api/histories/' + historyId + '/contents' )
    .done( function( response ){ /* will contain summary json for each dataset including encoded ids for each */ })

Let me know if that's not what you were looking for or if you find any problems with it.

On Wed, Aug 19, 2015 at 11:01 AM, Asma Riyaz <asmariyaz23@gmail.com> wrote:

Hello Galaxy-dev,

I thank you so much for all the help you have given me. 

I have a question about data set ids in galaxy. As a background, I am running my own galaxy instance on a server. A pipeline implemented in the lab produces the following files in the history:

1) 2 BAM files

2) A JSON file

My goal is to use this JSON file to pass the path/URL of bam files into a custom JS we wrote for visualization purpose.

This JSON file contains among many other details the paths/URLs to the above bam files. I am using JSON filetypes to send data to the JS visualization within Galaxy. To do this, I have my own JS which loads a BAM file from URL provided into an IGV.js track. IGV.js, which is responsible for making the tracks, expects a valid URL which is updated in the JSON file in this manner:

1) Extract the API_key and history id from a loaded BAM file

2) Edit the JSON file to reflect the BAM file's dataset id to be something like this:

{
  "CLL-HL_pilot.r1.fastq": {
    "DNA": "/datasets/36ddb788a0f14eb3/display?to_ext=bam",
    ...

This works fine if I know the API Key for bam files. When a pipeline executes dataset ids are generated for each output. I want to access and include these ids in the JSON file and load the updated JSON file into the history with the bams. Is there a way to get the ids from the history in this manner?

Thank you,

Asma

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