I have this code,but not working

[Matias Pereira]

I have this code,but not working (0 is idCategory)
{% for category in 0|getcategorybyid%}
{{ category.name}}
{% endfor -%}

this code: {{ 0|getcategorybyid }} return > DotLiquidApi
+CategoriesDotLiquidApi+CategoriesDotLiquidApi+Categories
(i have 3 categories with id 0)

can you help?

[Tim Jones]

Hi Matias,

Can you include your code for the getcategorybyid filter? I'm guessing that it returns a collection - which is why your second template outputs the type of the collection, since it doesn't know how to output the collection directly.

Your first template, with the {% for %} loop, wouldn't work, because the "for" tag doesn't allow an expression in place of the collection. That would be a nice feature, but it's not supported at the moment.

If you really want this syntax to work, you probably need to look into writing a custom version of the "for" tag.

Thanks,

Tim

[Matias Pereira]

Hi Tim,
Thank you for your answer. indeed, {{0 |}} getcategorybyid returns a
collection of a Class Categories.
I can do something like this?
{{ assign colllectioncat= 0|getcategorybyid}}
{% for category in colllectioncat%}
{{ category.name}}
{% endfor -%}

I was looking to change the Tag for, but I see complicated.
Thanks

[Tim Jones]

Hi Matias,

Sorry for the late reply. Hopefully you got it working, but just in case (and for future visitors):

Yes, you could use the assign tag to do it. This works:

[Test]

public void Test()

{

Template.RegisterFilter(typeof(CategoryFilters));

string template =

@"{% assign colllectioncat = 0 | get_category_by_id %} 

{% for category in  colllectioncat -%}

{{ category.name -}}

{% endfor -%}";

Helper.AssertTemplateResult(" \r\nfoobar", template);

}

private static class CategoryFilters

{

public static IEnumerable<Category> GetCategoryByID(int id)

{

return new[]

{

new Category { Name = "foo" },

new Category { Name = "bar" }

};

}

}

private class Category : Drop

{

public string Name { get; set; }

}

Best wishes,

Tim