Jaiti,
You can get all of the Id’s from a model using merge syntax. Note that I have included a comma next to the {{Id}}
{{#$Model.Accounts.data}}{{Id}},{{/$Model.Accounts.data}}
Here is an example page that uses this merge syntax along with a Formula field to remove the last comma from the merge ‘output’. Click the button ‘Get Ids’ to see this work.
<skuidpage unsavedchangeswarning="yes" personalizationmode="server" showsidebar="false" useviewportmeta="true" showheader="false">
<models>
<model id="Accounts" limit="20" query="true" createrowifnonefound="false" datasource="salesforce" sobject="Account">
<fields>
<field id="Id"/>
<field id="Name"/>
</fields>
<conditions/>
<actions/>
</model>
<model id="UIOnly" limit="20" query="true" createrowifnonefound="true" datasource="Ui-Only" processonclient="true">
<fields>
<field id="CleanIds" displaytype="FORMULA" label="CleanIds" ogdisplaytype="TEXT" readonly="true" returntype="TEXT">
<formula>LEFT({{FromActionIds}},(LEN({{FromActionIds}}) - 1))</formula>
</field>
<field id="FromActionIds" displaytype="TEXT" label="FromActionIds" length="5000"/>
</fields>
<conditions/>
<actions/>
</model>
</models>
<components>
<grid uniqueid="sk-1RBR-1706" columngutter="4px">
<divisions>
<division behavior="specified" verticalalign="top" width="50vw">
<components>
<buttonset model="Accounts" uniqueid="sk-1VFk-554" position="left">
<buttons>
<button type="multi" label="Get Ids" uniqueid="sk-1VGJ-939">
<actions>
<action type="updateRow" fieldmodel="UIOnly" affectedrows="context" field="FromActionIds" enclosevalueinquotes="true" value="{{#$Model.Accounts.data}}{{Id}},{{/$Model.Accounts.data}}"/>
</actions>
</button>
</buttons>
</buttonset>
<basicfieldeditor showheader="true" showsavecancel="false" showerrorsinline="true" model="UIOnly" uniqueid="sk-1VGE-903" mode="edit" layout="above">
<columns layoutmode="fixed">
<column uniqueid="sk-1VGE-899" width="100%">
<sections>
<section title="Section A" uniqueid="sk-1VGE-900">
<fields>
<field uniqueid="sk-1VGE-905" id="FromActionIds"/>
</fields>
</section>
<section title="Section B" uniqueid="sk-1VGE-902">
<fields>
<field uniqueid="sk-1VGE-904" id="CleanIds"/>
</fields>
</section>
</sections>
</column>
</columns>
</basicfieldeditor>
</components>
</division>
<division behavior="flex" verticalalign="top" minwidth="100px" ratio="1">
<components>
<skootable showconditions="true" showsavecancel="true" showerrorsinline="true" searchmethod="server" searchbox="true" showexportbuttons="false" hideheader="false" hidefooter="false" pagesize="10" alwaysresetpagination="false" createrecords="true" model="Accounts" buttonposition="" mode="read" allowcolumnreordering="true" responsive="true" uniqueid="sk-1R8C-408" heading="Accounts">
<fields>
<field id="Id" uniqueid="fi-1R8C-409"/>
<field id="Name" uniqueid="fi-1R8C-410"/>
</fields>
<rowactions>
<action type="edit"/>
<action type="delete"/>
</rowactions>
<massactions usefirstitemasdefault="true">
<action type="multi" label="Concat" icon="sk-icon-magic">
<actions>
<action type="custom" snippet="newSnippet"/>
<action type="adoptRows" sourcemodel="Accounts" targetmodel="Accounts_Adopt" affectedrows="context"/>
<action type="updateRow" fieldmodel="Accounts_Adopt" affectedrows="all" field="currval" enclosevalueinquotes="false" value="1"/>
</actions>
</action>
</massactions>
<views>
<view type="standard"/>
</views>
<actions defaultlabel="Global Actions" defaulticon="sk-icon-magic" usefirstitemasdefault="true"/>
</skootable>
</components>
</division>
</divisions>
<styles>
<styleitem type="background" bgtype="none"/>
</styles>
</grid>
</components>
<resources>
<labels/>
<javascript>
</javascript>
<css/>
<actionsequences uniqueid="sk-3N03-382">
<actionsequence id="d5becc77-bad2-4efa-beb5-7924c60b3c26" label="OppsQuery" type="reusable" uniqueid="sk-1R88-357">
<description/>
<actions>
<action type="blockUI"/>
<action type="requeryModel" model="Opps" behavior="loadmore"/>
<action type="unblockUI"/>
</actions>
</actionsequence>
<actionsequence id="5cd052c7-9b17-4ef0-b17c-fe3761ba4adc" label="New Sequence" type="reusable" uniqueid="sk-1R88-358">
<description/>
<actions/>
</actionsequence>
</actionsequences>
</resources>
<styles>
<styleitem type="background" bgtype="none"/>
</styles>
</skuidpage>
Thanks,
Bill