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Getting specified tags #483

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yilmazbuhar opened this issue Mar 5, 2022 · 5 comments
Closed

Getting specified tags #483

yilmazbuhar opened this issue Mar 5, 2022 · 5 comments

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@yilmazbuhar
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Is this posible to get all tag from specified template?

for example, i want to get all position tags and they values

<html>
	<body>
                {% partial '_Partial' %}
		<pre>
		
		</pre>
		<pre>
			{% position position1 %}
		</pre>
		<pre>
			{% position position2 %}
		</pre>
                {% rendersection footer %}
	</body>
</html>
@hishamco
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hishamco commented Mar 5, 2022

This is not HTML Parser, could you please tell what's the use case?

@yilmazbuhar
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yilmazbuhar commented Mar 6, 2022 •
edited
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In the liquid template above, I want to use backend code that returns different data for each request path. This will be a structure like multiple render_body, rather than using a single render_body.
In order to be able to determine which position tag will run which backend code, I need to get the list of position tags in liquid. As you said, I can get these values by parsing, but if it's already stored somewhere, I wanted to get it from there.

@sebastienros
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You can cast the IFluidTemplate that is returned to a FluidTemplate instance, and have access to all statements. From there you should be able to filter the tags, check their name, and get the positions.
c.f. #482 and maybe @thomasrosdahl could help if you are stuck.

@thomasrosdahl
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Here's an example on how to recursively traverse the AST and handle specific statements.

`

    private void HandleStatements(IEnumerable<Statement> statements)
    {
        foreach (var statement in statements)
        {
            if (statement is TagStatement tagStatement)
            {
               ....Handle TagStatement
            }
            else if (statement is IfStatement ifStatement)
            {
                HandleStatements(ifStatement.ElseIfs?.SelectMany(e => e.Statements);
                HandleStatements(ifStatement.Else?.Statements);
                HandleStatements(ifStatement.Statements);
            }
            else if (statement is CaseStatement caseStatement)
            {
                HandleStatements(caseStatement.Whens.SelectMany(w => w.Statements));
                HandleStatements(caseStatement.Else?.Statements);
                HandleStatements(caseStatement.Statements);
            }
            else if (statement is UnlessStatement unlessStatement)
            {
                HandleStatements(unlessStatement.Else?.Statements);
                HandleStatements(unlessStatement.Statements);
            }
        }
    }

`

@yilmazbuhar
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Thanks a lot

@jaidenbm0127 jaidenbm0127 mentioned this issue Jul 28, 2022
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4 participants
@sebastienros @hishamco @yilmazbuhar @thomasrosdahl