Field Template Bug #1019

simon-leech · 2023-11-29T11:15:02Z

This PR addresses a bug on two layer formats: mvt and wkt.
Previously if you provided a workspace.template for the thematic field, the workspace.template name was not assigned as the field name, meaning the thematic would be drawn as all 0 or null.

So in the example below, the mvt and wkt layer formats would return
select case when field >0 then field*10 else field end
which would mean that there was no field for the thematic.
This PR adds the following code, ensuring the field key is used as the field name.

const fields = _.fields?.split(',')
    .map(field => `${_.workspace.templates[field]?.template || field} AS ${field}`)
    .filter(field => !!field)

Example:

"templates": { 
"field_template": {
"template": "case when field > 10 then field*10 else field end"
}
}

"themes": {
      "test": {
        "title": "Test",
        "type": "graduated",
        "field": "field_template",
        "cat_arr": [
          {
            "value": 0,
            "label": "Under £75",
            "style": {
              "fillColor": "#edf8fb",
              "fillOpacity": 0.5
            }
          },
        {
            "value": 75,
            "label": "£75 - £150",
            "style": {
              "fillColor": "#edf8fb",
              "fillOpacity": 0.5
            }
          }
       ] 
   } 
}