Question: Getting values from an html template

[jaidenbm0127]

I know similar questions have been asked before, but I was just wondering if anything more solid has been implemented yet for getting these values from a given template.

For example, say I grab template X.html from a folder that contains the values {{FirstName}} and {{LastName}}. Is there a way of grabbing the variable names of each of those items regardless of the template chosen? That way I can compare that incoming data in form of say a Dictionary<string, string> and ensure it has a matching key-value pair for each of the values in the template.

I was wondering if I could do something like this for validation purposes ie make sure that a document has certain/all values filled.

Following this post I could do FluidTemplate.Statements but wasn't sure where to go from there (like how to filter the tags for example)

[sebastienros]

I would require a visitor patter in Fluid to be able to go over anything that is parsed and extract all identifiers. You could build a simpler parser though that would only read {{ value }} statements. But it can be more complex with loops, conditions, ... which also use properties from the model.

Parlot which is the underlying parser exposes an event when a sub-element is analyzed. But I am not sure it exposes an event when a node is actually found, probably because it could discard it later on when there is an ambiguity that will then be resolved.

In the meantime, I would suggest to go over each statement, then check for the types you want to handle, recursively, and finally detect indentifiers (look for IdentifierSegment in MemberExpression objects).