/Alias ODB tree: Difference between revisions

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'''Note:'''    The /Alias tree is applicable to mhttpd only, and ignored by odbedit.
<div style="column-count:4;-moz-column-count:4;-webkit-column-count:4">
* [[Midas_documentation|Midas Documentation]]
* [[Feature_listing|Feature Listing]]
* [[Application_listing|Application Listing]]
* [[Online_Database|Online Database]]
</div>


This optional ODB tree provides the user with a way to access other webpages via buttons placed on the mhttpd main Status page (hyperlinks prior to Dec 2009).


== Purpose ==
The ODB <span style="color: purple; font-style:italic;">/Alias</span> tree  provides the user with a way to access other webpages via buttons placed on the [[mhttpd]] [[Status Page]]. It can provide links to external webpages, or symbolic links (short-cuts) to ODB sub-trees.


The ODB /Alias key is not present until the user creates it. It is intended to contain a list of symbolic links to any desired ODB location. Any key created under /Alias will appear as a Button or Hyperlink on the Main Status page, with the same name as the key, except where noted below (e.g. alias links spawned in the same frame).
== Creating the /Alias tree ==
The <span style="color: purple; font-style:italic;">/Alias</span> tree is optional, and is not present until [[ODB#Creating ODB keys|created by the user]].  


By default, the clicking of the alias-button in the web interface will spawn a new frame. To force the display of the alias page in the same frame, an "&" has to be appended to the name of the alias. The & is stripped off the alias name when it appears on the main status page.


The following code demonstrates creating alias-buttons linking to ODB keys using odbedit :
<div id="Alias-Button"></div>
== Keys in the /Alias tree ==
Any key created under <span style="color: purple; font-style:italic;">/Alias</span> will appear as a button (i.e. '''alias-button''') on the [[Status Page]], with the same name as the key (except as noted below).


odbedit
By default, the clicking of an alias-button in the web interface will spawn a '''new frame'''. To force the display of the alias page in the '''same frame''', an "&" has to be appended to the name of the alias key. The "&" is stripped off the alias name when it appears as an alias-button (see [[#Symbolic Links|example]]).
[local:t2kgas:S] mkdir Alias          ***  Create the optional /Alias directory
[local:t2kgas:S] cd Alias
[local:t2kgas:S] ln /Equipment/TpcGasPlc/Common/ "TPC Common"    *** New frame, no &
[local:t2kgas:S] ln /Equipment/TpcGasPlc/Common/ "TPC Common"&" *** Same frame, with &


The items preceded by *** are comments
=== External links ===
The following [[odbedit]] commands demonstrate how to make a link to an external webpage:


This would create two identical alias-buttons called "TPC Common". Clicking on the first alias-button TPC Common would open the page in a new frame as shown above; clicking on the second would open it in the same frame. (Two identical buttons have been created for demonstration purposes only. Normally all buttons would be created with unique names.)
[local:t2kgas:S] cd /Alias
[local:t2kgas:S]create string triumf
String length [32]:
[local:t2kgas:S] set triumf "http://triumf.ca"


The following code demonstrates how to make a link to an external webpage:
This will cause a button <span style="color: #444444; background-color: #CCCCCC; font-style:italic; font-size: 90; padding:0.25em;
padding-left: 0.5em;padding-right: 0.5em;border:1px solid #808080;border-radius: 5px;margin-bottom:1px;">triumf</span>
on the status page,  Clicking on this alias-button will show the contents of the link in a new frame.


[local:t2kgas:S] cd Alias
=== Links to ODB ===
[local:t2kgas:S]create string triumf
The <span style="color: purple; font-style:italic;">/Alias</span> tree may also contain a list of symbolic links to any desired ODB location.
String length [32]:
[local:t2kgas:S] set triumf "http://triumf.ca"


Clicking on the alias-button triumf will show the contents of the link in a new page (see above).
Create a string under /alias with this contents:
<pre>
?cmd=odb&odb_path=/Programs
</pre>
 
[[Category:ODB Tree]]

Latest revision as of 11:03, 11 February 2019


Purpose

The ODB /Alias tree provides the user with a way to access other webpages via buttons placed on the mhttpd Status Page. It can provide links to external webpages, or symbolic links (short-cuts) to ODB sub-trees.

Creating the /Alias tree

The /Alias tree is optional, and is not present until created by the user.


Keys in the /Alias tree

Any key created under /Alias will appear as a button (i.e. alias-button) on the Status Page, with the same name as the key (except as noted below).

By default, the clicking of an alias-button in the web interface will spawn a new frame. To force the display of the alias page in the same frame, an "&" has to be appended to the name of the alias key. The "&" is stripped off the alias name when it appears as an alias-button (see example).

External links

The following odbedit commands demonstrate how to make a link to an external webpage: 

[local:t2kgas:S] cd /Alias
[local:t2kgas:S]create string triumf
String length [32]:
[local:t2kgas:S] set triumf "http://triumf.ca"

This will cause a button triumf on the status page, Clicking on this alias-button will show the contents of the link in a new frame.

Links to ODB

The /Alias tree may also contain a list of symbolic links to any desired ODB location.

Create a string under /alias with this contents: 

?cmd=odb&odb_path=/Programs
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