Nuxt•5mo ago

Facebook Conversion API calling by middleware on every route

Hey, I have a problem with Nuxt 3. I'm trying to do Facebook CAPI (documentation -> https://developers.facebook.com/docs/marketing-api/conversions-api/parameters). I need to read events on the website via the server. I did a post event and everything works. Unfortunately, when I upload it to Vercel, the events are not collected. I saw that on localhost my status was code 200, but on production it was 204 no content. Can anyone help me? That's how my server/api/facebook.post.ts looks

export default defineEventHandler(async (event) => {
  const eventData = await readBody(event)

  const url = `https://graph.facebook.com/v18.0/${process.env.FB_PIXEL_ID}/events?access_token=${process.env.FB_CAPI_TOKEN}`
  const headers = {
    'Content-Type': 'application/json'
  }

  try {
    const response = await $fetch(url, {
      method: 'POST',
      headers,
      body: eventData
    })
    return response
  } catch (error) {
    console.error('Error:', error)
  }
})

export default defineEventHandler(async (event) => {
  const eventData = await readBody(event)

  const url = `https://graph.facebook.com/v18.0/${process.env.FB_PIXEL_ID}/events?access_token=${process.env.FB_CAPI_TOKEN}`
  const headers = {
    'Content-Type': 'application/json'
  }

  try {
    const response = await $fetch(url, {
      method: 'POST',
      headers,
      body: eventData
    })
    return response
  } catch (error) {
    console.error('Error:', error)
  }
})

And that's how I call it by middleware in middleware/analytics.global.ts

export default defineNuxtRouteMiddleware(async () => {
  const nuxtApp = useNuxtApp()

  if ((nuxtApp as any).$fb) {
    ;(nuxtApp as any).$fb.track('ViewContent')

    await $fetch('/api/facebook/', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: {
        data: [
          {
            event_name: 'ViewContent',
            event_time: Math.floor(Date.now() / 1000),
            action_source: 'website',
            user_data: {
              client_ip_address: '192.168.1.1',
              client_user_agent: 'Chrome'
            }
          }
        ]
      }
    })
  }
})

export default defineNuxtRouteMiddleware(async () => {
  const nuxtApp = useNuxtApp()

  if ((nuxtApp as any).$fb) {
    ;(nuxtApp as any).$fb.track('ViewContent')

    await $fetch('/api/facebook/', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: {
        data: [
          {
            event_name: 'ViewContent',
            event_time: Math.floor(Date.now() / 1000),
            action_source: 'website',
            user_data: {
              client_ip_address: '192.168.1.1',
              client_user_agent: 'Chrome'
            }
          }
        ]
      }
    })
  }
})

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Facebook Conversion API calling by middleware on every route