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How to setup drop down list to choose for metadata field???

csiege

I know this has been discussed somewhat on other posts, but could not see a recent post or a real resolution.

I want to provide a down down list for the user to select from when
editing document details (metadata). This would allow me to enforce the vocabulary.

thanks!

Chris

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Comments

gavinc

There is now a "list of values" constraint in the data dictionary. In your model you can now have the following:

<constraints>
   <constraint name="my:status" type="LIST">
      <parameter name="allowedValues">
         <list>
            <value>Ready</value>
            <value>Steady</value>
            <value>Go</value>
         </list>
      </parameter>
   </constraint>
</constraints>
‍‍‍‍‍‍‍‍‍‍‍‍‍

and then reference the constraint from your property as follows:

<property name="my:status">
   <type>d:text</type>
   <constraints>
      <constraint ref="my:status" />
   </constraints>
</property>
‍‍‍‍‍‍‍‍

csiege

Exactly what I needed. 🙂

In the future it would be nice to have the constraint values dynamically selected from a database table. Is that possible now? In the future…?

thanks again!

Chris

gavinc

Not possible yet.

I've raised this as a new feature request in JIRA: http://www.alfresco.org/jira/browse/AR-677

loggheci

I suppose the use of constraints to implement value lists is only available in version 1.3?

When I add constraints in my model I get an error in my stdout log file:

Caused by: org.jibx.runtime.JiBXException: Expected end tag, found start tag "{http://www.alfresco.org/model/dictionary/1.0}constraint" (line 29, col 55)

I also do not find any constraints in the models of version 1.2…

gavinc

Correct, this is a new 1.3 feature.

felipe

Thanks for this topic!
Another question,
is it possible to use the constraint values defined in the search UI, with a drop down list too?

Regards

gavinc

Yes, if a property has the constraint set on it the values you define will appear in a drop down list when the property is shown in a property sheet.

agericke

Hello Gavin,
may I add an additional question about this topic?

How can I get the list values ('Ready', 'Steady', etc) via the Alfresco Web Services? I'm using Alfresco V 1.3.

Thanks,
Alex

gavinc

Unfortunately, property constraints are not currently exposed via the Dictionary Web Service.

agericke

Hi Gavin,
thank you for the quick answer. Are you planning to add this feature to the dictionary service?

Cheers,
Alex

davidc

There's some time allocated to web services in v1.4, so we'll see if this can be added.

sbanner

Is it possible to expose the "list of values" constraint in the web client configuration for Advanced Search? I've implemented the example above but I do not see the same constraint when the properties are included in Advanced Search.

csiege

This was our idea also…
we haven't gotten around to trying it yet…
have you?

thanks.

Chris

gavinc

The advanced search is still generating it's components by hand, it is not using the component generator framework yet. Some component generator framework enhancements will also be required to handle this scenario.

There is a task to do this on JIRA: http://www.alfresco.org/jira/browse/AWC-674

In the meantime you could customise org.alfresco.web.ui.repo.component.UISearchCustomProperties to generate the list of properties by examining the constraint on the property in the data dictionary.

sbanner

Gavin, thanks for the quick response. I've only been working with Alfresco for a couple of weeks but am very pleased with the progress I've been able to make.

I have implemented constrained properties for an extended space (cm:folder) and I can see the drop-down lists when I view the "Modify Space Properties" page. Could you point me to the class which implements the drop-down lists (using the data dictionary constraints) on this page? The url I'm looking at is as follows: http://localhost:8080/alfresco/faces/jsp/dialog/space-details.jsp. I've looked at the org.alfresco.web.ui.repo.component.UISearchCustomProperties class and feel that I can proceed if I can compare to the "Modify Space Properties" page implementation. I understand that they're implemented differently (in terms of framework) but still want to look.

Thanks for your help.

gavinc

Sure.

You'll find it in org.alfresco.web.bean.generator.TextFieldGenerator.

steel

I suppose the use of constraints to implement value lists is only available in version 1.3?

When I add constraints in my model I get an error in my stdout log file:

Caused by: org.jibx.runtime.JiBXException: Expected end tag, found start tag "{http://www.alfresco.org/model/dictionary/1.0}constraint" (line 29, col 55)

I also do not find any constraints in the models of version 1.2…

I am receiving this error as well. I am using the latest code that I got off SVN today.

Here is my model:

<types>

        <type name="ra:digitalAsset">
            <title>Digital Asset</title>
            <parent>cm:content</parent>
            <properties>
                <property name="ra:assetTitle">
                    <type>d:text</type>
                </property>

                <property name="ra:featureSeriesTitle">
                    <type>d:text</type>
                </property>

                <property name="ra:episodeReelNum">
                    <type>d:text</type>
                </property>

                <property name="ra:releaseAirDate">
                    <type>d:datetime</type>
                </property>

                <property name="ra:director">
                    <type>d:text</type>
                </property>

                <property name="ra:studioNetworkLabel">
                    <type>d:text</type>
                </property>

                <property name="ra:category">
                    <type>d:text</type>
                    <constraints>
                        <constraint ref="ra:categories"/>
                    </constraints>
                </property>

                <property name="ra:genre">
                    <type>d:text</type>
                    <multiple>true</multiple>
                    <constraints>
                        <constraint ref="ra:genres"/>
                    </constraints>
                </property>

                <property name="ra:upc">
                    <type>d:int</type>
                </property>

                <property name="ra:inventoryId">
                    <type>d:int</type>
                </property>

                <property name="ra:storageLocation">
                    <type>d:text</type>
                </property>

                <property name="ra:restricted">
                    <type>d:boolean</type>
                </property>

                <property name="ra:restrictedTo">
                    <type>d:text</type>
                </property>

                <property name="ra:qtyOnHandDVD">
                    <type>d:int</type>
                </property>

                <property name="ra:qtyOnHandVHS">
                    <type>d:int</type>
                </property>

                <property name="ra:dvdInStock">
                    <type>d:boolean</type>
                </property>

                <property name="ra:vhsInStock">
                    <type>d:boolean</type>
                </property>

                <property name="ra:reason">
                    <type>d:text</type>
                </property>

                <property name="ra:blurb">
                    <type>d:text</type>
                </property>

            </properties>
        </type>

        <type name="ra:print">
            <title>Print</title>
            <parent>cm:content</parent>
        </type>

        <type name="ra:resume">
            <title>Resume</title>
            <parent>cm:content</parent>
        </type>

    </types>

    <constraints>

        <constraint name="ra:categories" type="list">
            <parameter name="allowedValues">
                <list>
                    <value>Below The Line</value>
                    <value>Demo Reel</value>
                    <value>Feature Film/Short</value>
                    <value>Pilot</value>
                    <value>TV</value>
                </list>
            </parameter>
        </constraint>

        <constraint name="ra:genres" type="list">
            <parameter name="allowedValues">
                <list>
                    <value>Action &amp; Adventure</value>
                    <value>Children &amp; Family</value>
                    <value>Classics</value>
                    <value>Comedy</value>
                    <value>Documentary</value>
                    <value>Drama</value>
                    <value>Foreign</value>
                    <value>Horror</value>
                    <value>Independent</value>
                    <value>Music &amp; Concert</value>
                    <value>Romance</value>
                    <value>Sci-Fi &amp; Fantasy</value>
                    <value>Special Interest</value>
                    <value>Sports</value>
                    <value>Television</value>
                    <value>Thrillers</value>
                </list>
            </parameter>
        </constraint>

    </constraints>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

gavinc

Try putting the <constraints> element before the <types> element.

steel

Try putting the <constraints> element before the <types> element.

thanks! that worked.

Is there a documentation on how to properly use the contraints tag and its options?

thanks.

gavinc

Not yet, it's something on my list to do!

tiofelix

Sorry, I have the same problem but I did not understand the solution. Wich archives should I modify?? where should I insert this code??

Thanks

There is now a "list of values" constraint in the data dictionary. In your model you can now have the following:

<constraints>
   <constraint name="my:status" type="LIST">
      <parameter name="allowedValues">
         <list>
            <value>Ready</value>
            <value>Steady</value>
            <value>Go</value>
         </list>
      </parameter>
   </constraint>
</constraints>
‍‍‍‍‍‍‍‍‍‍‍‍‍

and then reference the constraint from your property as follows:

<property name="my:status">
   <type>d:text</type>
   <constraints>
      <constraint ref="my:status" />
   </constraints>
</property>
‍‍‍‍‍‍‍‍

gavinc

This would go in your model definition XML file.

Have a look at http://wiki.alfresco.com/wiki/Data_Dictionary_Guide for more information.

tiofelix

I placed that code (constraints) in my model before <types> but i am not sure where i should place this code:

<property name="my:status">
   <type>d:text</type>
   <constraints>
      <constraint ref="my:status" />
   </constraints>
</property>

Sorry, but i new on this. Thanks a lot.

steel

I placed that code (constraints) in my model before <types> but i am not sure where i should place this code:

<property name="my:status">
   <type>d:text</type>
   <constraints>
      <constraint ref="my:status" />
   </constraints>
</property>

Sorry, but i new on this. Thanks a lot.

This is the property definition for a type.
Typically your situation would yield a structure like this:

<constraint>
</constraint>

<type name="">
<property name="my:status">
   <type>d:text</type>
   <constraints>
      <constraint ref="my:status" />
   </constraints>
</property>
</type>

tiofelix

Hi,

   Ok, now i understand it..but i have a new problem. I set up a drop down list like you described but now i want a new one that works like this:

       -ready
       -steady
       -go

     I want a new drop down list and when you choose "ready" displays:

        -hi power
        -lo power

      and if you choose "steady" another diferent list..
     Alfresco can do that?? Thanks again.

gavinc

No, unfortunately, we don't support dependent lists.

This may be fairly tricky to accomplish as well as all the components used to represent the lists are built dynamically by the property sheet. This means you don't have access to the relevant component in the JSP to assign a valueChangeListener, which is what is needed here.

If you really need this functionality it's going to be a case of writing some custom code to add this ability. In the meantime feel free to raise this requirement on JIRA.

tiofelix

To be this property mandatory…

<property name="my:status">
<type>d:text</type>
<constraints>
<constraint ref="my:status" />
</constraints>
</property> 
‍‍‍‍‍‍‍

…i thought abaut this:

<property name="my:status">
<type>d:text</type>
<constraints>
<constraint ref="my:status" />
</constraints>
<mandatory>true</mandatory>
</property> 
‍‍‍‍‍‍‍‍

but unfortunatly… it doesn`t works.

what am i doing wrong?? Thanks again.

tiofelix

I?ve just found the solution of my problem, don`t disturbe answer me:

 

<property name="my:status">
         <type>d:text</type>
         <mandatory>true</mandatory>
         <constraints>
            <constraint ref="my:status" />
         </constraints>
         </property>      

‍‍‍‍‍‍‍‍‍‍‍

tiofelix

I?ve just found the solution of my problem, don`t disturbe answer me:

 

<property name="my:status">
         <type>d:text</type>
         <mandatory>true</mandatory>
         <constraints>
            <constraint ref="my:status" />
         </constraints>
         </property>      

‍‍‍‍‍‍‍‍‍‍‍

tiofelix

I?ve just found the solution of my problem, don`t disturbe answer me:

 

<property name="my:status">
         <type>d:text</type>
         <mandatory>true</mandatory>
         <constraints>
            <constraint ref="my:status" />
         </constraints>
         </property>      

‍‍‍‍‍‍‍‍‍‍‍