How to bind custom servlet in asset metadata schema for dynamic dropdown?? | Community
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A
An1-3
Level 4
March 8, 2018

How to bind custom servlet in asset metadata schema for dynamic dropdown??

  • March 8, 2018
  • 4 replies
  • 10756 views

Anyone bind custom servlet in asset metadata schema for dynamic dropdown? We are able to fetch the dynamic values from JSON file, but not sure how it work with servlet.

http://blogs.adobe.com/contentmanagement/2018/01/03/using-a-json-file-with-the-dropdown-widget-on-the-metadata-schema/

I am getting the same response mention in the blog from servlet but not getting what need to pass in JSON PATH field of metadata schema to call servlet

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4 replies

navinkaushal
navinkaushal
Level 4
March 8, 2018

If I understand correctly you want servlet to provide the metadata instead of JSON file (as mentioned in blog)?

    A
    An1-3Author
    Level 4
    March 8, 2018

    Yes Navin. If you see the image available in blog has one property JSON PATH which is pointing to one .json file which is avaible in aem and providing yuu response . Instead of that i want to give servlet path which will provide the response

      A
      An1-3Author
      Level 4
      March 8, 2018

      I am not sure how to provide that path of servlet to get the response . Even you will see the blog comments, someone have asket the same quetion. I had tried to give the servlet path eg: /bin/dummyservlet.json  or /bin/dummyservlet.options.json or /bin/dummyservlet, but noting work for me. i am getting response servlet in below format

      {"options":[{"value":"US","text":"United States"},{"value":"UK","text":"United Kingdom"}]}

        navinkaushal
        navinkaushal
        Level 4
        March 8, 2018

        You need to give servlet path and it should return the JSON data.

        Also please make sure your content-type header should be set as application/json data type while returning the output.

          khamat_bn
          khamat_bn
          Level 4
          June 10, 2019

          Hi Buddy,

          Did you got the answer of this.

            E
            ektaa69139387
            Level 2
            February 4, 2021

            Hi, I am replying on an old thread. But I had the similar problem and not found any solution so tried some custom approach and able to achieve this.

            Solution:

            1. overlay/customise default  metadataschema using metadataschema editor.(http://www.sgaemsolutions.com/2017/02/overrideoverlay-dam-asset-metadata-in.html )

            2. Add custom dropdown field using datasource object to populate dropdown.

            https://helpx.adobe.com/experience-manager/using/aem65_coral_resourcetypes.html#UseaDataSourceObjecttopopulateaSelectfield 

             

            For Example: I have added below dropdown in my metadataschema dialog xml to dynamically populate dropdown from my servlet

             <_x0031_612365521559
                                        jcr:primaryType="nt:unstructured"
                                        sling:resourceType="dam/gui/components/admin/schemafield"
                                        emptyText="Select Option"
                                        fieldLabel="Collections"
                                        name="./jcr:content/metadata/test"
                                        resourceType="granite/ui/components/coral/foundation/form/select">
                                    <granite:data
                                            jcr:primaryType="nt:unstructured"
                                            choicesCascading="default"
                                            cq-msm-lockable="./metadata/test"
                                            metaType="dropdown"
                                            requiredCascading="default"
                                            visibilityCascading="default"/>
                                    <datasource
                                            jcr:primaryType="nt:unstructured"
                                            sling:resourceType="<servlet resourceType>"
                                            addNone="{Boolean}true"/>
                                    <cascadeitems
                                            jcr:primaryType="nt:unstructured"
                                            sling:resourceType="dam/gui/coral/components/admin/schemaforms/formbuilder/cascadeitems"/>
                                </_x0031_612365521559>
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