Example - List Picker

In Example - RSS Feed we used the Multi Selector content source to extract a subset of the feed data, then filtered and shuffled it down to just the data we wanted to display using the Multi Level List content display.

The List Picker content display provides an alternative way of getting to the same kind of result. Rather than extracting a bit more than what we need with Multi Selector  content transform and then filtering out what we don't need in the Multi Level List content display , we make all the data available to the display as a 2-dimensional list via the List Selector content transform and then pick the few items we actually want from that in the List Picker content display.

For some types of data and display, its easier to filter out what isn't wanted. For some types of data and sisplay, its easier to pick only what is wanted. In may cases, its a matter of personal preference as to what you are most comfortable working with.

In Detail

The content source is URL configured exactly the same as previously. In the List Selector content transform, the source content type is 'XML / XHTML', the outer selector is 'channel' and the item selector is 'item'. So far, very similar to our previous use of Multi Selector. However, we don't want to end our data there, so at the bottom of the transform we select to Flatten to list with.dot.notation within each item

Rather than go straight to the display, first have a quick look at the data available using the Serialize content display. This is generally a useful intermediary stage when viewing complex data and becomes essential with List Picker because we need to know the keys to pick from.

To avoid cluttering the page, in the below the data has been sliced to just the first item.

Array
(
    [item.title] => NASA Administrator, Sen. Cruz, Rep. Babin to Discuss Crew Dragon Test Flight at Briefing in Houston
    [item.link] => http://www.nasa.gov/press-release/nasa-administrator-sen-cruz-rep-babin-to-discuss-crew-dragon-test-flight-at-briefing
    [item.description] => NASA Administrator Jim Bridenstine, and U.S. Sen. Ted Cruz and U.S. Rep. Brian Babin of Texas will hold a news conference at 1 p.m. CDT Sunday, May 31, at Space Center Houston, the official visitor center of NASA’s Johnson Space Center in Houston, to discuss the successful docking of the SpaceX Crew Dragon spacecraft carrying NASA astronauts Robert
    [item.enclosure.url] => http://www.nasa.gov/sites/default/files/styles/1x1_cardfeed/public/thumbnails/image/jsc2020e024319_0.jpg?itok=HSuUMGdN
    [item.enclosure.length] => 3108646
    [item.enclosure.type] => image/jpeg
    [item.guid.text] => http://www.nasa.gov/press-release/nasa-administrator-sen-cruz-rep-babin-to-discuss-crew-dragon-test-flight-at-briefing
    [item.guid.isPermaLink] => false
    [item.pubDate] => Sat, 30 May 2020 18:23 EDT
    [item.source.text] => NASA Breaking News
    [item.source.url] => http://www.nasa.gov/rss/dyn/breaking_news.rss
    [item.dc:identifier] => 461467
)
View settings

Looking at the data we make note of the keys:

  • item.title
  • item.link
  • item.enclosure.url
  • item.pubDate
  • item.description

We can then use those keys to pick out the data in List Picker. It uses the same Header Extra Content styles to layout and format the feed items. 

A nice trick we can do with List Picker is to assign an item as a link behind another item, so rather than just having the full URL text as a link, we can link to it directly from the title and from the image.

 

NASA Administrator, Sen. Cruz, Rep. Babin to Discuss Crew Dragon Test Flight at Briefing in Houston

Sat, 30 May 2020 18:23 EDT

NASA Administrator Jim Bridenstine, and U.S. Sen. Ted Cruz and U.S. Rep. Brian Babin of Texas will hold a news conference at 1 p.m. CDT Sunday, May 31, at Space Center Houston, the official visitor center of NASA’s Johnson Space Center in Houston, to discuss the successful docking of the SpaceX Crew Dragon spacecraft carrying NASA astronauts Robert

NASA Astronauts Launch from America in Historic Test Flight of SpaceX Crew Dragon

Sat, 30 May 2020 15:38 EDT

For the first time in history, NASA astronauts have launched from American soil in a commercially built and operated American crew spacecraft on its way to the International Space Station.

View settings

Settings as JSON

If you haven't already noticed, many of our example Universal Content Puller blocks have a small View settings button to the top right, where you can view the block settings as JSON data and even copy them to paste into your own UCP blocks using using the Import button in the Support tab of the edit dialog.

As a change from also showing screengrabs of some of the settings, for this example we have used the Export button in the Support tab of the block edit dialog to export the settings from the above UCP block and show them below. 

Open the accordion below to view the JSON. You can copy these settings and paste them into your own UCP blocks using the Import button.

Settings as JSON

        [
  {
    "name": "content_source_plugin",
    "value": "URL"
  },
  {
    "name": "ucp_cs_u_r_l_ucp_cs_source_url",
    "value": "https://www.nasa.gov/rss/dyn/breaking_news.rss"
  },
  {
    "name": "ucp_cs_u_r_l_ucp_cs_source_cache_enable",
    "value": "on"
  },
  {
    "name": "ucp_cs_u_r_l_ucp_cs_source_cache_duration",
    "value": "global"
  },
  {
    "name": "ucp_cs_u_r_l_ucp_cs_source_cache_duration_mins",
    "value": "360"
  },
  {
    "name": "content_transform_plugin",
    "value": "List Selector"
  },
  {
    "name": "ucp_ct_list_selector_ucp_ct_qp_obj",
    "value": "qp"
  },
  {
    "name": "ucp_ct_list_selector_ucp_ct_qp_selector",
    "value": "channel"
  },
  {
    "name": "ucp_ct_list_selector_ucp_ct_item_selector",
    "value": "item"
  },
  {
    "name": "ucp_ct_list_selector_ucp_ct_rows_offset",
    "value": "0"
  },
  {
    "name": "ucp_ct_list_selector_ucp_ct_rows_length",
    "value": "10"
  },
  {
    "name": "ucp_ct_list_selector_ucp_ct_flatten",
    "value": "list"
  },
  {
    "name": "content_display_plugin",
    "value": "ListPicker"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_format[row]",
    "value": "ph3"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading[row]",
    "value": "pick"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_user_heading[row]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_picked_heading[row]",
    "value": "item.title"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading_linked[row]",
    "value": "item.link"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_filter[row]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_shuffle[row]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_format[col]",
    "value": "ph4"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading[col][0]",
    "value": "none"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_user_heading[col][0]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_picked_heading[col][0]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading_linked[col][0]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_picked_value[col][0]",
    "value": "item.enclosure.url"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_value_linked[col][0]",
    "value": "item.link"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading[col][1]",
    "value": "none"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_user_heading[col][1]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_picked_heading[col][1]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading_linked[col][1]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_picked_value[col][1]",
    "value": "item.pubDate"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_value_linked[col][1]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading[col][2]",
    "value": "none"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_user_heading[col][2]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_picked_heading[col][2]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_heading_linked[col][2]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_picked_value[col][2]",
    "value": "item.description"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_list_item_value_linked[col][2]",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_items_to_display",
    "value": "2"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_paginate_if_more",
    "value": "b"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_orphan_limit",
    "value": "0"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_block_in_pagination",
    "value": ""
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_striped",
    "value": "striped"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_condensed",
    "value": "condensed"
  },
  {
    "name": "ucp_cd_list_picker_ucp_cd_hover",
    "value": "hover"
  },
  {
    "name": "options[ajax_mode]",
    "value": "none"
  },
  {
    "name": "options[ajax_mode_delay]",
    "value": ""
  },
  {
    "name": "options[ajax_mode_proximity]",
    "value": ""
  },
  {
    "name": "options[placeholder_type]",
    "value": "marker"
  },
  {
    "name": "options[placeholder_label]",
    "value": "Loading..."
  },
  {
    "name": "options[placeholder_height]",
    "value": "25"
  },
  {
    "name": "options[placeholder_height_u]",
    "value": "vw"
  },
  {
    "name": "cache_permission",
    "value": "1"
  },
  {
    "name": "options[CacheBlockOutputLifetime]",
    "value": "0"
  },
  {
    "name": "options[sanitize_op]",
    "value": "safe"
  },
  {
    "name": "options[autolink]",
    "value": "youthweb_n"
  },
  {
    "name": "options[image_render]",
    "value": "***image"
  },
  {
    "name": "options[wrapper_enable]",
    "value": "wrap"
  },
  {
    "name": "options[wrapper_element]",
    "value": "div"
  },
  {
    "name": "options[wrapper_class]",
    "value": "ucp-body example-styled"
  },
  {
    "name": "options[edit_mode_marker]",
    "value": ""
  },
  {
    "name": "options[debug]",
    "value": ""
  },
  {
    "name": "options[show_exporter]",
    "value": "show_exporter"
  },
  {
    "name": "whitelabel",
    "value": "off"
  }
]    

Additional Pages

About this Sidebar

Creating a sidebar for a group of pages without messing about with stacks is an easy use-case for Universal Content Puller.

This sidebar is edited once, within the main addon page for Universal Content Puller.

It is then pulled into all UCP sub-pages using a UCP block.

The Content Source is Parent Page, set to pull the Sidebar area from 2 pages from the top. The Content Transform is Selector, set to remove container and row classes that, when unnecessarily nested, could mess up the Bootstrap grid. The Content Display is Plain, which just outputs the transformed text.

In the advanced settings, sanitization is disabled as we trust the source page and don't want to strip out any formatting or functionality from the pulled sidebar.