Hi all, 

For all the input parameters, we have to explicitly use $source.input, 
$source.m, etc instead of just using input, m, etc. Please see the code below 
that works. 

 <command>
    #if $source.source_select=="Use_Snapshot"
        ./cM-snapshot.sh $source.input $output
    #else
        ./cM.sh $source.m $source.b $source.ns $source.w $source.s $source.z 
$output
    #end if
</command>

<inputs>
 <conditional name="source">
    <param name="source_select" type="select" label="Specify the input">
        <option value="Use_Snapshot">Use Snapshot</option>
        <option value="Set_Values">Set Values</option>
    </param>
    <when value="Use_Snapshot">
     <param name="input" type="data" format="dbm" size="100" label="Input 
Snapshot"/>
      <sanitizer sanitize="False"/>
    </when>
    <when value="Set_Values">
      <param name="m"  label="Omega_m h^2"  type="float" value="0.1279" 
min="0.120" max="0.155"/>
      <param name="b"  label="Omega_b h^2"  type="float" value="0.0232" 
min="0.0215" max="0.0235"/>
      <param name="ns" label="n_s"          type="float" value="0.8629" 
min="0.85" max="1.05"/>
      <param name="w"  label="w"            type="float" value="-1.184" 
min="-1.30" max="-0.70"/>
      <param name="s"  label="sigma_8"      type="float" value="0.6159" 
min="0.61" max="0.9"/>
      <param name="z"  label="z"            type="float" value="1.0"    
min="0.0" max="1.0"/>
      <sanitizer sanitize="False"/>
    </when>
 </conditional>

Thanks,
Saba

On Mar 20, 2014, at 5:35 AM, Peter Cock <p.j.a.c...@googlemail.com> wrote:

> Hi all,
> 
> It may be the comparison, I've sometimes found an
> explicit cast to str is required in this kind of situation.
> So, I would try:
> 
> <command>
>    #if str($source.source_select)=="Use_Snapshot":
>        cM-snapshot.sh $input $output
>    #else
>        cM.sh $m $b $ns $w $s $z $output
>    #end if
> </command>
> 
> Regards,
> 
> Peter
> 
> 
> On Thu, Mar 20, 2014 at 10:17 AM, Nicola Soranzo <sora...@crs4.it> wrote:
>> Hi Saba and Jens,
>> ":" are not needed, they are optional, see
>> 
>> http://www.cheetahtemplate.org/docs/users_guide_html/users_guide.html#SECTION000680000000000000000
>> 
>> Maybe it's a problem with the left quotes around Use_Snapshot in the #if
>> line?
>> 
>> Nicola
>> 
>> Il 2014-03-20 06:26 Keilwagen, Jens ha scritto:
>>> 
>>> Hi Saba,
>>> 
>>> there is a syntax error in the line of the "#if". Please add ":" at
>>> the end and report whether the error still occurs.
>>> 
>>> All the best, Jens
>>> 
>>> VON: galaxy-dev-boun...@lists.bx.psu.edu
>>> [mailto:galaxy-dev-boun...@lists.bx.psu.edu] IM AUFTRAG VON Saba
>>> Sehrish
>>> GESENDET: Mittwoch, 19. März 2014 23:07
>>> AN: galaxy-dev@lists.bx.psu.edu
>>> BETREFF: [galaxy-dev] Running a different command based on selection
>>> 
>>> in the tool
>>> 
>>> Hi all,
>>> 
>>> I am trying to write a tool that based on user criteria will run a
>>> different script.
>>> 
>>> In the code below, If I select Use_Snapshot, I see the right interface
>>> but somehow galaxy tries to execute the #else part and look for "m"
>>> input parameter. The example I have seen in documentation is using the
>>> script with same name in both if and else and the number of input
>>> arguments is the same as well. Any suggestions/ideas why always #else
>>> part gets executed although right interface appears based on user
>>> selection.
>>> 
>>> Thanks,
>>> 
>>> Saba
>>> 
>>> <command>
>>> 
>>> #if $source.source_select=="Use_Snapshot"
>>> 
>>> cM-snapshot.sh $input $output
>>> 
>>> #else
>>> 
>>> cM.sh $m $b $ns $w $s $z $output
>>> 
>>> #end if
>>> 
>>> </command>
>>> 
>>> <inputs>
>>> 
>>> <conditional name="source">
>>> 
>>> <param name="source_select" type="select" label="Specify the input">
>>> 
>>> <option value="Use_Snapshot">Use Snapshot</option>
>>> 
>>> <option value="Set_Values">Set Values</option>
>>> 
>>> </param>
>>> 
>>> <when value="Use_Snapshot">
>>> 
>>> <param name="input" type="data" format="dbm" size="100" label="Input
>>> Snapshot"/>
>>> 
>>> <sanitizer sanitize="False"/>
>>> 
>>> </when>
>>> 
>>> <when value="Set_Values">
>>> 
>>> <param name="m" label="Omega_m h^2" type="float" value="0.1279"
>>> min="0.120" max="0.155"/>
>>> 
>>> <param name="b" label="Omega_b h^2" type="float" value="0.0232"
>>> min="0.0215" max="0.0235"/>
>>> 
>>> <param name="ns" label="n_s" type="float" value="0.8629" min="0.85"
>>> max="1.05"/>
>>> 
>>> <param name="w" label="w" type="float" value="-1.184" min="-1.30"
>>> max="-0.70"/>
>>> 
>>> <param name="s" label="sigma_8" type="float" value="0.6159"
>>> min="0.61" max="0.9"/>
>>> 
>>> <param name="z" label="z" type="float" value="1.0" min="0.0"
>>> max="1.0"/>
>>> 
>>> <sanitizer sanitize="False"/>
>>> 
>>> </when>
>>> 
>>> </conditional>
>>> 
>>> </inputs>
>> 
>> 
>> ___________________________________________________________
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