Selective Display of Widgets on Blogger

Before getting into the details of selective display,let us discuss about the different types of pages on blogger.

1) home page- yea its your blogs home page as the name suggests(actually this is not a type. but i will still include it here..)

2) Archive Page- Refers to archive pages..

3) Item Page - Refers to Post Pages

4) Index Page - Includes home page + label page + search results page

5) Static Page – The newly introduced Blogger Pages

Selective Display..

There are different conditions to check the page type. You can use these conditions for the selective display.

You might like to display a welcome message on the home page only..

<b:if cond='data:blog.url == data:blog.homepageUrl'>

Hi to all welcome to WidgetsCorner

</b:if>

Displaying on all pages other than the homepage 

<b:if cond='data:blog.url != data:blog.homepageUrl'>
Seen to all pages but not for Homepage
</b:if>

Displaying something on the Archive Pages..

<b:if cond='data:blog.pageType == &quot;archive&quot;'>
Hello this is only on Archive page
</b:if>

Displaying something on non Archive Pages..

<b:if cond='data:blog.pageType != &quot;archive&quot;'>
For non archive only
</b:if>

Displaying something on post page only

<b:if cond='data:blog.pageType == &quot;item&quot;'>
Post page seen only
</b:if>

Displaying something on non post page only

<b:if cond='data:blog.pageType != &quot;item&quot;'>

This is a non post page
</b:if>

Displaying something on static  pages only

<b:if cond='data:blog.pageType == &quot;static_page&quot;'>
Hi this is a static page
</b:if>

Displaying something on  all other than static pages

<b:if cond='data:blog.pageType != &quot;static_page&quot;'>

Hi this is not a static page

</b:if>

You can use the conditional thing for the index type pages. But i don't find much use in that.

Now displaying something on a particular url only (may be a particular post page only or something like that)

<b:if cond='data:blog.url == &quot;The_Selected_Page_Url&quot;'>
This will be displayed on The_Selected_Page_Url only
</b:if>

(you will have to replace The_Selected_Page_Url with the url where you need the widget to be displayed..)

Now displaying something on all pages other than a particular url

<b:if cond='data:blog.url != &quot;The_Selected_Page_Url&quot;'>
This will not be displayed on The_Selected_Page_Url
</b:if>

Now how to use two conditions (or more).. the logical AND thing.. :)

<b:if cond='data:blog.url != &quot;The_Particular_Page_Url1&quot;'>
<b:if cond='data:blog.url != &quot;The_Particular_Page_Url2&quot;'>

This is not Particular_Page_Url1 and This is not Particular_Page_Url2

</b:if>
</b:if>

The else thing..

What if you need to display something on the homepage and something else on all other pages.. here comes the use of if else

<b:if cond='data:blog.url == data:blog.homepageUrl'>

This is the homepage

line1
line2
<b:else/>

This is not the homepage

line 3
line4
</b:if>

Different combinations are possible..

Limitations

I don't see a way to use OR conditions,

There isn't any direct easy way to include AND in conditional statements

The main drawback is that we cant enclose an entire widget within the b:if tag.. you will get some message telling that a b:section cant have b:if s ie you can wrap an unexpanded widget within a b:if condition

Wrapping a widget with the conditional tags

Every widget other than the BlogPost Widget has this general structure

<b:widget id='something' locked='' title='' type=''>
<b:includable id='main'>

Somethings here

</b:includable>
</b:widget>

Wrapping conditional tags can be done as

<b:widget id='something' locked='' title='' type=''>
<b:includable id='main'>
<b:if cond='data:blog.url == &quot;The_Particular_Page_Url&quot;'>
Some things here
</b:if>
</b:includable>
</b:widget>

This code will display the widget on The_Particular_Page_Url only (you have to provide this url)

Another Limitation..

wrapping the blogpost widget is little complicated as it has many b:includables.. yea you can do that too.. :)

Another Important B:if condition..

Some of you might want to display Adsense ads below the first post only..OK there is a condition for checking if the post is the first post or not..

<b:if cond='data:post.isFirstPost'>

This is the first post on this page

</b:if>

This condition will work within the blogger post loop...