I am new to Postman. I have a Rails server running on the background. I am trying to mock a POST request, but it is not being accepted.
Let's say the model is called manufacturer_organization.rb. Inside, it requires 3 parameters: organization_id (uuid data type), manufacturer_id (integer data type), and account_number (string data type). manufacturer_organization belongs_to organization and it also belongs_to :manufacturer (vice versa; manufacturer and organization has_many manufacturer_organization)
Inside manufacturer_organizations_controller.rb, I have a create method:
def create
#manufacturer_organization = ManufacturerOrganization.new(manufacturer_organization_params)
if #manufacturer_organization.save
puts "success!"
render json: #manufacturer_organization
else
puts "Sorry, something went wrong"
end
end
I can confirm that I have sufficient authorization; when I perform a GET request I got the right JSON response. I am using rails serializer and I have setup serializer for this model as well. Route is also setup using resources :manufacturer_organizations. My gut feeling says the way I am using postman is wrong.
Here is the screenshot of Postman app. I have the right address on address bar, and I am performing a POST request. I have the three params under key-value.
After I Send it, under my Rails Server log I see:
Started POST "/manufacturer_organizations" for 127.0.0.1 at 2017-04-13 16:56:44 -0700
Processing by ManufacturerOrganizationsController#create as */*
Parameters: {"organization_id"=>"fb20ddc9-a3ee-47c3-bdd2-f710541-ff89c", "manufacturer_id"=>"1", "account_number"=>"A rand
om account number test"}
...
(0.4ms) BEGIN
(0.3ms) ROLLBACK
Sorry, something went wrong
I can do ManufacturerOrganization.new(organization_id: Organization.last.id, manufacturer_id: Manufacturer.last.id, and account_number: "random test account number") just fine inside rails console.
How can I submit a POST request from postman to add a new manufacturer_organization?
Edit:
def manufacturer_organization_params
api_params.permit(:organization_id, :manufacturer_id, :account_number)
end
whereas inside application_controller.rb
def api_params
#api_params ||= ActionController::Parameters.new(ActiveModelSerializers::Deserialization.jsonapi_parse(params))
end
Edit2:
I added error.full_messages and this is what I got:
Manufacturer can't be blank
Organization can't be blank
Account number can't be blank
Why are they blank?
You can pass the data using params or within the body request.
The best way to do this is using the body, because you can send files and the request becomes more clean without the params.
To send data in the body, you must pass the model name and attribute in the "key" field, and the value in the "value" field, like this:
I don't understand what you do to your params. There is a reason the ActiveModelSerializers::Deserialization is namespaced in the "Model" namespace. It shouldn't be used to serialize or de-serialize internet params, but instead it's for serializing/de-serializing model instances.
If parameters arrive in the correct format ActionController::Base from which AplicationController and thus ManufacturerOrganizationsController inherit will de-serialize them for you. The Rails query parameter format looks as follows:
name=something #=> params[:name] = 'something'
names[]=something1&names[]=something2 #=> params[:names] = ['something1', 'something2']
instance[id]=1&instance[name]=foo #=> params[:instance] = {id: '1', name: 'foo'}
This can also be stacked and is used for nested resources by Rails. Example:
instance[title]=some&instance[nested][name]=thing&instance[nested][ids][]=1&instance[nested][ids][]=2
#=> params[:instance] = {title: 'some', nested: {name: 'thing', ids: ['1', '2']}}
Having said that let's get to your example. First of al let us throw away those manual building of params and stick to the convention:
class ManufacturerOrganizationsController
# ...
private
def manufacturer_organization_params
# arriving params should look like this:
#
#=> params = {
# manufacturer_organization: {
# organization_id: 'fb20ddc9-a3ee-47c3-bdd2-f710541-ff89c',
# organization_id: '1',
# account_number: 'A random account number test'
# }
# }
#
# The method #require raises an exception if the provided key
# is not present or has a blank value (with exception of false).
# If the key is found and has a value present than that value is
# returned.
#
params.require(:manufacturer_organization)
.permit(:organization_id, :manufacturer_id, :account_number)
end
end
With that out of the way let's send the correct formatted params:
+--------------------------------------------+---------------------------------------+
| Key | Value |
|--------------------------------------------|---------------------------------------|
| manufacturer_organization[organization_id] | fb20ddc9-a3ee-47c3-bdd2-f710541-ff89c |
| manufacturer_organization[manufacturer_id] | 1 |
| manufacturer_organization[account_number] | A random account number test |
+--------------------------------------------+---------------------------------------+
Those 2 things combined should let you create your resource successfully.
The key thing you should take from this is that params is not a string containing al the params that should be de-serialized. It already should be de-serialized, if it's not than you might have send your parameters wrong.
Ruby on Rails and Postman - Post request.
Hello, this is an example that I developed with Postman and Rails API.
Postman.
I can't add images but this what you have to add in postman Key = Value
Change to Post Request and send.
book[name] = 'Harry Potter'
book[author] = J.K. Rowling
Ruby on Rails 7.
Rails maintains the same code.
def create
#book = Book.new(book_params)
if #book.save
render json: #book, status: :created, location: api_v1_books_url(#book)
else
render json: #book.errors, status: :unprocessable_entity
end
end
def book_params
debugger
params.require(:book).permit(:name, :author, :price)
end
I hope this helps.
Related
With the goal of creating a JSON string, the requirement is to use an existing attribute and assign it, in the JSON output, with the attribute name id.
#valids = Destination.limit(10).select(:name, :long_name, :other_code).as_json(except: :id)
except: :id is being invoked to avoid confusion, as other_code attribute is intended to be the id in the generated JSON.
this will then be transformed into valid JSON via
#valids.to_json
how can other_code be output as id ?
You can do this like that with a simple string instead of symbols.
Destination
.limit(10)
.select('name, long_name, other_code as id')
.as_json
Honestly am new to Ruby on rails but very experience with json and frontend application responses
You can try this. if it work, you can now try it with your database responses. Ensure that column id exist in that your database
def your_definition_here
respond_to do |format|
#valids='999'
format.json do
render json: {id: #valids}.to_json
#render json: {id: #valids.id}.to_json
end
end
end
I have an api for mass creating records of a model Series. A remote machine sends a POST request to my url, with an array #series passed as a json parameter, like this:
#series = [{:id=>1,name:"test"}, {:id=>2,name:"test2"}]
req = Net::HTTP::Post.new(post_uri, 'Content-Type' => 'application/json')
req.body = {series: #series}.to_json
res = http.request(req)
but I cannot for the life of me get the respective Series to be created. Here is the method that receives the data and is supposed to create one Series for each hash in the #series array:
def api
series = params[:series]
series.each do |s|
name = s[:name]
if !Series.where(name: name).exists?
Series.create(s)
end
end
end
The params are definitely passed through, but no Series are created. When I check my logs there's a 500 error, but since it's remote, I have no way of getting a more specific error.
When I remove the params and just create a generic Series for each hash in the #series array, it works. For example, with the following code, if #series has 3 hashes, 3 Series are created:
def post_product_data
series = params[:series]
series.each do |s|
name = s[:name]
if !Series.where(name: name).exists?
Series.create #GENERIC SERIES NOT BASED ON PARAMS
end
end
end
I thought it might be a permissions issue, so I tried permitting all params. But when I changed the method to this, I got a "undefined method "permit!" error:
def post_product_data
series = params[:series]
series.each do |s|
name = s[:name]
if !Series.where(name: name).exists?
Series.create(s.permit!) #TRIED PERMITTING ALL PARAMS
end
end
end
Anyone have any ideas?
UPDATE
I changed the offending line to this:
Series.create({id: s[:id], name: s[:name]})
and now it works. I have no idea why, since the hashes should have been inserting the exact same thing. But at least it works finally.
Rails 4.5 Ruby 2.3.1
I am getting json from an API and trying to store the following into a model CLrates
1. timestamp as unix time (date)
2. Currency_code (string)
3. quote (decimal monetary value)
I can use the following in irb after parsing the json and know how to get the elements individually using: response["quotes"]. How can I generate params to be saved in the model above when the body is as follows:
irb(main):036:0> puts response.body
{
"success":true,
"terms":"https:\/\/xxxxx.com\/terms",
"privacy":"https:\/\/xxxxx.com\/privacy",
"timestamp":1504817289,
"source":"USD",
"quotes":{
"USDAED":3.672703,
"USDAFN":68.360001,
"USDCUC":1,
"USDCUP":26.5,
"USDCVE":91.699997,
"USDCZK":21.718701,
............ many more lines removed for brevity
"USDZWL":322.355011
}
I can do this using a separate associated model but have very little idea how to create the params to save to a single table.
The following links got me to this point and well worth a read if you need info on httparty GET (client):
1. http://www.rubydoc.info/github/jnunemaker/httparty/HTTParty/
2. http://eric-price.net/blog/rails-api-wrapper/
3. https://www.driftingruby.com/episodes/playing-with-json
The class and method in lib/clayer.rb:
class clayer
include HTTParty
format :json
read_timeout 10
def self.get_quotes
response = HTTParty.get('http://www.nnnnnnn.net/api/live?
access_key=nnnnnnnnnn&format=1')
end
end
I used irb as I am still learning how to run this through rails c. This will be called in the controller and saved however need to work out how to get the params from the json
Thanks for the help
OK: after digging I think I am on the right track
I get the response["QUOTES"], loop through them and build the params required saving each at the end of the loop
rates = response["QUOTES"]
rates.each do |k,v|
clrate = Realtimerates.new
clrate.date = response["timestamp"]
clrate.countrycode = "#{k}"
clrate.price = "#{v}"
clrate.save
end
Going to give this a whirl
In model
class Realtimerate < ActiveRecord::Base
include HTTParty
format :json
read_timeout 5
def self.get_cl_rates
response = HTTParty.get('http://www.mmmmm.net/api/live?access_key="key"&format=1')
rates = response["quotes"]
rates.each do |k,v|
create!(
date: Time.at(response["timestamp"]),
country_code: "#{k}",
price: "#{v}")
end
end
end
In the controller:
def index
Realtimerate.get_cl_rates
#realtimerates = Realtimerate.all
end
This is working and shows latest GET.
You already have a hash in your response.body. All you need to do now is to assign the relevant key-value to your model's attributes. e.g.
clrate = ClRate.new
res = response.body
clate.time = res["timestamp"]
...
clate.save
I have a form where a user can update multiple resources at the same time. The transaction block makes the form atomic: if one validation fails for any of the resources being updated, then none of the resources get updated, and active record rollsback all changes.
When transaction fails, I want to render the form again, display the same input that the user entered along with errors next to each of the error input fields which prevented the transaction from going through.
The transaction block works. What I am having trouble with is building the array of objects from the params log. Each index of the array should contain a hash which holds key/value pairs of all the attributes of a specific resource.
UDPATE: BELOW IS THE ANSWER CODE THANKS TO THE RESPONSES
Code:
def update_multiple
begin
User.transaction do
params[:users].each do |k, v|
User.find(k).update!(v)
end
flash[:notice] = "Update Successful"
redirect_to :users and return
end
rescue
#users = []
params[:users].each do |k,v|
#users.push(User.new({:id => k}.merge(v)))
end
flash[:error] = "Errors found"
render :edit_multiple and return
end
end
And for good measure, here is what the passed in parameters looks like in the log. This transaction fails because the name attribute must be at least 3 characters long.
Parameters: {"utf8"=>"✓", "authenticity_token"=>"xyz=", "users"=>{"15"=>
{"name"=>"Neil", "age"=>"11"}, "16"=>{"name"=>"z", "age"=>"33"}, "17"=>
{"name"=>"John", "age"=>"99"}}, "commit"=>"Submit Changes"}
Thanks in advance! Any way to write this code better in ruby is much appreciated as well.
Ok, so you're trying to iterate through a list of objects in your params using a for_each and an external iterator, you really don't want to do that. I'd suggest something like this:
params[:users].each do |k,v|
# k is the "key" of each user while v is the values associated with each key
#users.push(User.new(:id => k, v)
# I'm doing this in my head so you might need:
# #users.push(User.new({:id => k}.merge(v))
# if you start getting errors about looking for a proper hash or something
# I can't remember how good Rails/Ruby is at recognizing nested hashes
end
That should produce a new user for each user object passed in using the ID provided and the values associated with each value.
I am new to ROR.
I am having a controller where i am getting the search results in available_users variable..
availble_users //some active record result with id,name & address
available_users.each do |userstatus|
userstatus.class_eval do
attr_accessor :is_friend
end
if current_user.invitations.find_by(:friend_id => userstatus.id) //invitation is another table
userstatus.is_friend = "true"
else
userstatus.is_friend = "false"
end
end
render json: available_users
but when i am getting the response on ajax request it is serving the same array without including is_friend column.
here is my json response.
id: 2
name: abc
address:
please can anyone figure me out why it is not appending this temporary attribute.
Thanks.
what you have will work if you pass the methods option to_json
render json: available_users.to_json(:methods => :is_friend)
Or you could do this
available_users.each do |userstatus|
if current_user.invitations.find_by(:friend_id => userstatus.id) //invitation is another table
userstatus["is_friend"] = "true"
else
userstatus["is_friend"] = "false"
end
end
render json: available_users
[]= is an alias for write_attribute