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Create schemas

Now to the fun part: creating schemas and transforming our data into something we can use in the frontend app. Go to Schemas and hit the Create button, use “Navigation Item” as name. Navigate to the schema and replace the content with this snippet: 
/** @type {Enterspeed.FullSchema} */
export default {
  triggers: function(context) {
    context.triggers('umbraco', ['navigationItem'])
  },
  actions: function (sourceEntity, context) {
    context.reprocess('navigationItem').parent()
    context.reprocess('mainNavigation').parent()
  },
  properties: function (sourceEntity, context) {
    return {
      title: sourceEntity.properties.title,
      children: context.reference('navigationItem')
                          .children()
                          .orderBy({ 
                            propertyName: 'properties.metaData.sortOrder', 
                            direction: 'desc' 
                          })
    }
  }
}
Save the draft and deploy your schema. Actions The key part of the schema is actions: 
actions: function (sourceEntity, context) {
  context.reprocess('navigationItem').parent()
  context.reprocess('mainNavigation').parent()
}
In short this tells another schema to update if this one affected. Read more about actions Next we want to create a schema called “Main Navigation”, so hit that create button again. Replace the content with this snippet: 
/** @type {Enterspeed.FullSchema} */
export default {
  triggers: function(context) {
    context.triggers('umbraco', ['mainNavigation'])
  },
  routes: function(sourceEntity, context) {
    context.handle('mainNavigation')
  },
  properties: function (sourceEntity, context) {
    return {
      children: context.reference('navigationItem')
                          .children()
                          .orderBy({ 
                            propertyName: 'properties.metaData.sortOrder', 
                            direction: 'desc' 
                          })
    }
  }
}
The key part here is reference for the children. This will make sure to resolve the view when referenced. Read more about reference

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Output

To make sure we get the output we are looking for, generate a curl request by testing your NavigationGroup entity (remember to include handle): (replace “[your_environment_key]” with your key) 
curl -L -X GET 'https://delivery.enterspeed.com/v2?handle=mainNavigation' -H 'X-Api-Key: [your_environment_key]'
You should get a response that looks like this: 
{
  "meta": {
    "status": 200,
    "redirect": null,
    "missingViewReferences": []
  },
  "views": {
    "mainNavigation": {
      "children": [
        {
          "title": "Home",
          "children": []
        },
        {
          "title": "Books",
          "children": [
            {
              "title": "Book 1",
              "children": []
            },
            {
              "title": "Book 2",
              "children": []
            }
          ]
        }
      ]
    }
  }
}
Now you can go to your web app start creating your navigation!