Function handlebars::to_json

source · 
pub fn to_json<T>(src: T) -> Jsonwhere
    T: Serialize,
Expand description

Convert any serializable data into Serde Json type

Examples found in repository?
src/helpers/helper_each.rs (line 98)
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    fn call<'reg: 'rc, 'rc>(
        &self,
        h: &Helper<'reg, 'rc>,
        r: &'reg Registry<'reg>,
        ctx: &'rc Context,
        rc: &mut RenderContext<'reg, 'rc>,
        out: &mut dyn Output,
    ) -> HelperResult {
        let value = h
            .param(0)
            .ok_or_else(|| RenderError::new("Param not found for helper \"each\""))?;

        let template = h.template();

        match template {
            Some(t) => match *value.value() {
                Json::Array(ref list)
                    if !list.is_empty() || (list.is_empty() && h.inverse().is_none()) =>
                {
                    let block_context = create_block(value);
                    rc.push_block(block_context);

                    let len = list.len();

                    let array_path = value.context_path();

                    for (i, v) in list.iter().enumerate().take(len) {
                        if let Some(ref mut block) = rc.block_mut() {
                            let is_first = i == 0usize;
                            let is_last = i == len - 1;

                            let index = to_json(i);
                            block.set_local_var("first", to_json(is_first));
                            block.set_local_var("last", to_json(is_last));
                            block.set_local_var("index", index.clone());

                            update_block_context(block, array_path, i.to_string(), is_first, v);
                            set_block_param(block, h, array_path, &index, v)?;
                        }

                        t.render(r, ctx, rc, out)?;
                    }

                    rc.pop_block();
                    Ok(())
                }
                Json::Object(ref obj)
                    if !obj.is_empty() || (obj.is_empty() && h.inverse().is_none()) =>
                {
                    let block_context = create_block(value);
                    rc.push_block(block_context);

                    let len = obj.len();

                    let obj_path = value.context_path();

                    for (i, (k, v)) in obj.iter().enumerate() {
                        if let Some(ref mut block) = rc.block_mut() {
                            let is_first = i == 0usize;
                            let is_last = i == len - 1;

                            let key = to_json(k);
                            block.set_local_var("first", to_json(is_first));
                            block.set_local_var("last", to_json(is_last));
                            block.set_local_var("key", key.clone());

                            update_block_context(block, obj_path, k.to_string(), is_first, v);
                            set_block_param(block, h, obj_path, &key, v)?;
                        }

                        t.render(r, ctx, rc, out)?;
                    }

                    rc.pop_block();
                    Ok(())
                }
                _ => {
                    if let Some(else_template) = h.inverse() {
                        else_template.render(r, ctx, rc, out)
                    } else if r.strict_mode() {
                        Err(RenderError::strict_error(value.relative_path()))
                    } else {
                        Ok(())
                    }
                }
            },
            None => Ok(()),
        }
    }