Getting undefined on inputs

Question

I have tours and i need to build little filter. but on request.input am getting undefined and in final result i get all tours not filtered ones...

public async tourSearch({ request, response }) {
    const tourName = request.input('tourName')
    const tourLocation = request.input('tourLocation')
    const tourCategory = request.input('tourCategory')
    console.log(tourName)
    const query = Tour.query()

    if (tourName) {
      query.where('title', tourName)
    }
    if (tourLocation) {
      query.where('location', tourLocation)
    }
    if (tourCategory) {
      query.where('category', tourCategory)
    }
    if (tourName || tourLocation) {
      query.where('title', tourName).where('location', tourLocation)
    }
    if (tourName || tourCategory) {
      query.where('title', tourName).where('category', tourCategory)
    }
    if (tourLocation || tourCategory) {
      query
        .where('location', tourLocation)
        .where('category', tourCategory)
    }
    if (tourLocation || tourCategory || tourName) {
      query
        .where('location', tourLocation)
        .where('category', tourCategory)
        .where('title', tourName)
    }

    const filteredTours = await query.orderBy('createdAt', 'asc')

    return response.json(filteredTours)
  }

am new in node.js so i know that am doing something wrong but can't understand what am doing wrong can someone please help me with this...