Filed value saving issue

Question

Hi 
 Below are two codes where first one is getting save in rule input variable but on display validation nothing is displaying . 
 On second code i have added 'value' syntax conditionally. Where display value will come on true condition.But after adding this nothing is getting save in rule input variable. 
 Why issue is coming only after adding value syntax. As i need that to display value on true condition. Kindly help me where is the exact issue. 
 1. 
 a!paragraphField( label: "Sample Field", disabled: if(rule!APN_isBlank(local!flag),false,true), saveInto: { a!save(ri!requsetData.sampleField, if(rule!APN_isBlank(local!tempChangeFlag), {ri!requsetData.sampleField},"Need to Display if flag is true") ), }, ), 
 2. 
 a!paragraphField( label: "Sample Field", value: if(rule!APN_isBlank(local!flag),"","Need to Display if flag is true"), disabled: if(rule!APN_isBlank(local!flag),false,true), saveInto: { a!save(ri!requsetData.sampleField, if(rule!APN_isBlank(local!tempChangeFlag), {ri!requsetData.sampleField},"Need to Display if flag is true") ), }, ),

Mike Schmitt · Answer

I'm very unclear on what you're actually trying to do in either of these examples. In both cases, the user's input value to the paragraph fields will never be displayed: in the first example you have no value: parameter set at all, and in the second example your value parameter would never lead to the saved data actually being displayed. 
 My overall suggestion with this and all other SAIL issues would be, you should try to thoroughly learn what the core functionality actually does before doing something more advanced. I would advise that you create a sandbox interface and start out with just a basic paragraph field that does a basic saveInto and displays its own value (the standard use case), then make step-by-step changes to that making sure it still works with every iterative change. In this manner you will likely be able to figure out the answer to your use case on your own - though if you're still stuck please feel free to post more replies here (preferably with updated code snippets posted in Code Boxes using the "Insert -> Code" functionality). 
 Here's a super basic example to start with: 
 load(
 local!paragraphValue: null(),
 
 a!paragraphField(
 label: "Sample Field",
 value: local!paragraphValue,
 saveInto: {
 a!save(
 local!paragraphValue,
 upper(save!value)
 )
 }
 )
)

Mike Schmitt · Answer

sauravk said: Below line of code is making this code to display value in case of false. 
 I'm not sure what you mean by this - because the code doesn't do what you seem to be saying. This code snippet will cause the paragraph field to display a value of "Need to Display if flag is true" if local!flag has any value at all , and if local!flag is null , then instead it will display "" (i.e. blank). 
 Configured this way, the paragraph field will never display what the user has typed into it, if that's your intention at any point.

Mike Schmitt · Answer

sauravk said: On selection of that flag value will change. 
 Maybe I understand now - so if you're hoping that the value saved into ri!requestData.sampleField changes when the checkbox is changed, then you should add an a!save() to the saveInto array of your Checkbox field. 
 Try this revised example code and see if it gives you any further ideas: 
 load(
 local!paragraphValue: null(),
 local!checkboxValue: false(),
 
 a!sectionLayout(
 contents: {
 a!paragraphField(
 label: "Sample Field",
 value: local!paragraphValue,
 disabled: if(
 local!checkboxValue = true(),
 true(),
 false()
 ),
 saveInto: {
 a!save(
 local!paragraphValue,
 upper(save!value)
 )
 }
 ),
 a!radioButtonField(
 label: "T/F",
 choiceLabels: {"True", "False"},
 choiceValues: {true(), false()},
 value: local!checkboxValue,
 saveInto: {
 local!checkboxValue,
 a!save(
 local!paragraphValue,
 if(
 save!value = true(),
 "Need to display if flag is true",
 local!paragraphValue
 )
 )
 }
 )
 }
 )
)