RSS DEFINITION

XML EXAMPLE

<?xml version="1.0"?>
<rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/">
    <channel>
        <item>
            <guid>661e4533afef0661e4533afef4</guid>
            <title>20% discount</title>
            <description>Grocery from local distributors</description>
            <category/>
            <pubDate>2024-04-16 00:00:00</pubDate>
            <endDate>2024-05-21 00:00:00</endDate>
            <changeDate>2024-04-15 16:00:01</changeDate>
            <link>https://.../661e4533afef0661e4533afef4/</link>
            <media:content url="https://.../6533afef4.jpg" type="image/jpeg"/>
            <media:group>
                <media:content url="https://.../JHR0906799.pdf" name="Document name" type="application/pdf"/>
                <media:content description="Long information text ..." type="text/plane"/>
                <media:content type="text/html">
                    <![CDATA[
                    <h1>Title</h1>
                    <p>Html formated text</p>
                    ]]>
                </media:content>
            </media:group>
        </item>
    </channel>
</rss>

Properties

• channel.item.guid

  • unique id of channel item

  • newer change

  • usually is database record id

• channel.item.title

  • Title of channel item

  • can NOT be empty

  • optional html formating

• channel.item.description

  • Description of channel item

  • optional html formating

• channel.item.category

  • If channel has multiple categories, here is name of item category

    • if everywhere is only one category, in preview category picker will be not visible

• channel.item.author

  • name of post creator

• channel.item.link

  • address pointing to webpage

  • preview is QR-CODE to scan by mobile

• channel.item.pubDate

  • date-time, when was item created

• channel.item.endDate

  • date-time, last day of visibility

  • if current device time is more than endDate then post is invisible

• channel.item.changeDate

  • date-time, last change of channel item

  • item will stay in cache (under guid), if changed, then item will be fetched again

• channel.item.content, channel.item.image

  • the same as channel.item.media:content

• channel.item.media:content

  • image which representing channel item

  • required attributes: url, type

  • enabled type IMAGE

• channel.item.media:group

  • media holder of multiple content-types

  • can contain one or more media

• channel.item.media:group.media:content

  • media item

  • enabled types IMAGE, VIDEO, DOCUMENT, HTML, TEXT

Item parameters

Entry inside Media group

Image, Document, Video

Html

Text

Supported content-types

• IMAGE

  • image/webp

  • image/jpeg

  • image/png

• VIDEO

  • video/mp4

  • video/x-msvideo

  • video/webm

  • video/quicktime

  • video/x-m4v

  • video/mpeg

• DOCUMENT

  • application/pdf

  • application/rtf

  • application/msword

  • application/vnd.openxmlformats-officedocument.wordprocessingml.document

  • application/vnd.ms-excel

  • application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

  • application/vnd.ms-powerpoint

  • application/vnd.openxmlformats-officedocument.presentationml.presentation

  • application/vnd.oasis.opendocument.text

  • application/vnd.oasis.opendocument.presentation

  • application/vnd.oasis.opendocument.spreadsheet

• TEXT

  • text/plane

  • text/html

Logic

Server will connect to defined RSS channels and fetch definition. Store definition locally.

Download, convert, prepare new media. Delete unused media, items.

If are any differences between old definition and new one, send new definition to devices where is channel attached.

Devices download prepared media from server.

Decision item is new / removed / updated

• if guid from new definition is not in old definition

  • it is new item

  • all media from new definition are downloaded, converted, prepared

• if guid from old definition is not in new definition

  • it is old item

  • all media from old definition are removed

• if guid is in old and new definition but changeDate is not equals

  • it is changed item

  • all media from old definition are removed

  • all media from new definition are downloaded, converted, prepared