Using rest and freemarker to build components
Download
1 / 13

Using REST and Freemarker to Build Components - PowerPoint PPT Presentation


  • 114 Views
  • Uploaded on
  • Presentation posted in: General

Using REST and Freemarker to Build Components. “let’s make something”. “I want to show the most recent blog article and when it was posted”. Ok, no problem. First get the message from REST. /topics/style/blog/ recent?page_size =1 And assign that to a freemarker variable

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

Using REST and Freemarker to Build Components

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Using REST and Freemarker to Build Components

“let’s make something”


“I want to show the most recent blog article and when it was posted”

Ok, no problem. First get the message from REST.

/topics/style/blog/recent?page_size=1

And assign that to a freemarker variable

<#assign recent= rest(“/topics/style/blog/recent?page_size=1”).messages />


“No,wait! I only want it to come from my blog. It’s called “Bloggy” and it’s the best

Still no problem. We’ll just change our REST call to be specific to one board.

<#assign recent = rest(“/boards/id/bloggy/topics/recent?page_size=1”).messages />

http://lithosphere.lithium.com/restapi/vc/boards/id/lithiumblog/topics/recent?page_size=1


“What’s that ‘/restapi/vc’ thing?

If you want to see your pure xml response in the browser you need to have “restapi/vc” in the url. If you are making the call in Freemarker, we take care of that part for you.

This:

http://lithosphere.lithium.com/restapi/vc/boards/id/lithiumblog/topics/recent?page_size=1

Is the same as this:

<#assign myCall = rest(“/boards/id/lithiumblog/topics/recent?page_size=1”) />


Now let’s write out our article title and date

<a href=“${recent.message.@view_href}”>

${recent.message.subject}</a>

<span class=“post-time”>

${recent.message.post_time}</span>


“What kind of date is that?? I can’t read that!”

Welcome to Bloggy2013-11-18T17:34:08+00:00

Good point, you can get more user friendly info by adding a parameter to your rest call

?restapi.response_style=view


<#assign recent = rest(“/boards/id/bloggy/topics/recent?page_size=1&restapi.response_style=view”).messages />

This changes the response for post time from this:

<post_time type="date_time">2013-11-18T17:34:08+00:00</post_time>

To this:

<post_time type="date_time" view_date="12-02-2013" view_time="11:13 AM" view_friendly_date="yesterday">2013-12-02T19:13:12+00:00</post_time>


Now we have:

<a href=“${recent.message.@view_href}”>

${recent.message.subject}</a>

<span class=“post-time”>

${recent.message.post_time.@view_friendly_date}</span>

Welcome to BloggyYesterday

Yay, I love it.

Let’s test it!


Aaahhhhhh!


What Happened?

We used @view_friendly_date without ever checking that it existed.


“FIX IT!!”

<a href=“${recent.message.@view_href}”>

${recent.message.subject}</a>

<span class=“post-time”>

<#if recent.message.post_time.@view_friendly_date[0]??>

${recent.message.post_time.@view_friendly_date}

<#else>

${recent.message.post_time.@view_date}

</#if>

</span>

Gives you:


“Yay, it’s perfect”

Happy Dance


Tips for Development

  • Always check the XML first

  • Test for variables before you use them. De-FENCE, De-FENCE!

  • Test as both an admin user and a regular user- permissions will kill you –

  • “unit test”

  • Versions tab is your friend

  • Think about performance


ad
  • Login