Help with small rails app

rubyonrails-talk
1

Hey guys I’m completely lost at this point I’m trying to make a simple app that takes an input in the form of a string (“City, State”) and sends that string to the google_places gem to do spot_by_query(“gas station near #{enter value from input}”)

Then I need the 1st 10 results and be able to print out their names. I have become completely lost in my attempts and was looking for some advice.

Here is my controller class LocationsController < ApplicationController

before_action :set_location, only: [:show, :edit, :update, :destroy]

GET /locations

GET /locations.json

def index

@location = Location.new

end

GET /locations/1

GET /locations/1.json

def show

end

GET /locations/new

def new

end

POST /locations

POST /locations.json

def create

@client = GooglePlaces::Client.new('################')

@shops = @client.spots_by_query('coffee near #{@location(params[:address])}')

@result = JSON.parse(@shops[1])

# @location.find_closest_shops(@location.params[:address])

end

private

# Never trust parameters from the scary internet, only allow the white list through.

def location_params

  params.require(:location).permit(:address)

end

end

``

Here is the input form

<%= form_for @location do |f| %>

<%= f.label :address %>

<%= f.text_field :address, :placeholder => “City State” %>


<%= f.submit “Find Coffee!” %>

<% end %>

``

Here is the output form (this is where I’m lost) <%= print “#{@result[‘name’]}” %>

``

2

Dominic,

It sounds like you want to write some pseudo-code on the rails console. Do you know how to use the rails console?

Figure out how to use the Rails console and then execute what yo’ve got in your create method line-by-line

That should let you poke around the results of the GooglePlaces object and see how it works. You should be able to replicate just about anything on the console, and it sounds to me like your grey-areas around Rails itself are getting in the way of you learning how the GooglePlaces object works.

If you have questions that are specific to the Google places gem you are using, I recommend you open an issue or ask on the support forum dedicated to the Google places gem. This list is generally for stuff related to the framework of Rails itself (although we do often point people in the right direction if they ask about common gems).

-Jason

3

Hey guys I’m completely lost at this point I’m trying to make a simple app that takes an input in the form of a string (“City, State”) and sends that string to the google_places gem to do spot_by_query(“gas station near #{enter value from input}”)

Then I need the 1st 10 results and be able to print out their names. I have become completely lost in my attempts and was looking for some advice.

Here is my controller class LocationsController < ApplicationController

before_action :set_location, only: [:show, :edit, :update, :destroy]

GET /locations

GET /locations.json

def index

@location = Location.new

end

GET /locations/1

GET /locations/1.json

def show

end

GET /locations/new

def new

end

POST /locations

POST /locations.json

def create

@client = GooglePlaces::Client.new('################')

@shops = @client.spots_by_query('coffee near #{@location(params[:address])}')

@result = JSON.parse(@shops[1])

# @location.find_closest_shops(@location.params[:address])

end

private

# Never trust parameters from the scary internet, only allow the white list through.

def location_params

  params.require(:location).permit(:address)

end

end

``

Here is the input form

<%= form_for @location do |f| %>

<%= f.label :address %>

<%= f.text_field :address, :placeholder => “City State” %>


<%= f.submit “Find Coffee!” %>

<% end %>

``

Here is the output form (this is where I’m lost) <%= print “#{@result[‘name’]}” %>

``

Well, after making a few assumptions:

  • you are going to a URL that gets routed to the index action like /locations
  • the form posts to /locations

In your create action, you probably need to replace:

@shops = @client.spots_by_query('coffee near #{@location(params[:address])}')

``

With:

@shops = @client.spots_by_query("coffee near #{location_params[:location][:address])}")

``

``

Noting that you won’t have an @location set (it will be nil because all instance variables are nil by default).

You need to actually get the params which will look something like: { location: { address: “entered value” } }

You can probably see this in the development.log.

In Ruby, single-quoted strings do not do interpolation. Thus:

here = “Cincinnati”

puts ‘coffee near #{here}’

coffee near #{here}

but:

puts “coffee near #{here}”

coffee near Cincinnati

so that should get you going again.

-Rob

4

Oh, and:

<%= print “#{@result[‘name’]}” %>

``

can be simply:

<%= @result[‘name’] %>

The print output might end up in the log, but certainly won’t be in the generated HTML.

And the result of what’s inside <%= … %> will be turned into a String (with .to_s if needed) and replace that bit of the template.

-Rob

5

Ok so I figured out what I did wrong sorta, the way the call was being made didnt work so I did this def create

@shops =

@client = GooglePlaces::Client.new(‘AIzaSyCC5Dyjn5_gGSKZMVJqF6tKOYOaxgUMJ8s’)

@shops = @client.spots_by_query('coffee near ’ + @location.address)

end

``

now my next (and I think last problem) is in my input form I assumed that was setting @location’s address to w/e the string in the input field is but it’s saying it’s nil??

in my index I’m calling @location = Location.new, then I thought I was setting @location.address to “input value from form”, what am I missing?

6

Fixed it, needed to save it

added @location = Location.create(location_params) to create controller