Trigger required field check without saving

Questions
,
2

I’m not sure if your asking declaratively or via Javascript, declaratively I don’t think so. Javascript though, you can just create a javascript function that you call at the beginning of your snippet which checks for missing values. If you find any missing values just alert them to the user, and call “return;” which will stop the rest of the snippet from executing. Or return a boolean value to decide if you should continue. We use something like this:

function checkForMissingFields(currentName, salesSupport, opportunityModelCampaign, campaignName, campaignContactId, contLastName){&nbsp; &nbsp; if(currentName != "" &amp;&amp; salesSupport != "null" &amp;&amp; salesSupport != '' &amp;&amp;&nbsp;<br>&nbsp; &nbsp; ((opportunityModelCampaign != '' &amp;&amp; opportunityModelCampaign != "null") || (campaignName != "" &amp;&amp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ((campaignContactId != "null" &amp;&amp; campaignContactId != '') || contLastName != "")))){<br>&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; return true; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br>&nbsp; &nbsp; }<br>&nbsp; &nbsp; else{<br>&nbsp; &nbsp; &nbsp; &nbsp; if(currentName == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; alert('Opportunity needs a name.');<br>&nbsp; &nbsp; &nbsp; &nbsp; else if(salesSupport == "null" || salesSupport == '')<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; alert('Opportunity needs a Sales Support Representative.');<br>&nbsp; &nbsp; &nbsp; &nbsp; else if(opportunityModelCampaign == "null" || opportunityModelCampaign == ''){<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(campaignName == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; alert('Opportunity needs either an existing Campaign or a user-entered Campaign that includes a Name');<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if((campaignContactId == "null" || campaignContactId == '') &amp;&amp; contLastName == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; alert('Created Campaigns need either an existing Contact or a created Contact with a Last Name');<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; return false;<br>&nbsp; &nbsp; }

and you can just check the boolean to see if you should continue. I might be missing your question here, but this would work.