The following #request = JSON.parse(request.body.read) is generating:
[
{
"application_id"=>"216",
"description"=>"Please double check date and time",
"release_date"=>"2018-12-01",
"auth"=>"someBigData"
}
]
However a blank is returned if invoking
Rails.logger.info #request['application_id']
and
if #request['auth'] == 'someBigData'
is generating a
TypeError (no implicit conversion of String into Integer):` in `app/controllers/base_controller.rb:55:in '[]'
What is wrong syntactically?
You're getting an array of hashes back, which is why #request['application_id'] returns a blank for you.
You'll need to do #request.first['application_id'] or #request[0]['application_id'] to index into your array.
As it's been already stated, you get this error cause #request is an array of hashes rather than a hash itself. To access "application_id" key of the first element you can also use dig method:
#request.dig(0, "application_id")
this way there is not going to be an exception in case #request is empty.
the current hash is
{\"report_name\"=>\"Study/Control: ABIRATERONE ACETATE - 20151413355\", \"left_mue_start_date\"=>\"02-26-2015\", \"left_mue_end_date\"=>\"03-19-2015\", \"right_mue_start_date\"=>\"02-26-2015\", \"right_mue_end_date\"=>\"03-19-2015\", \"report_formulary_id\"=>\",7581\", \"mue\"=>\"true\", \"mue_type\"=>\"study/control\", \"chain_id\"=>\"1\", \"left_mue_formulary_ids\"=>[\"7581\"], \"action\"=>\"create_report\", \"controller\"=>\"informatics\", \"user_id\"=>339}
now I need to convert it in proper hash like
{"report_name" => "Study/Control: ABIRATERONE ACETATE - 20151413355"}
so I am trying to get it with JSON.parse but I am getting error like:
JSON::ParserError: 757: unexpected token at '{
So if someone know about that so please help me.
and I am using Rails 3.2
What you have is a hash printed as String. To convert it into a Hash use eval.
ch = "{\"report_name\"=>\"Study/Control: ABIRATERONE ACETATE - 20151413355\", \"left_mue_start_date\"=>\"02-26-2015\", \"left_mue_end_date\"=>\"03-19-2015\", \"right_mue_start_date\"=>\"02-26-2015\", \"right_mue_end_date\"=>\"03-19-2015\", \"report_formulary_id\"=>\",7581\", \"mue\"=>\"true\", \"mue_type\"=>\"study/control\", \"chain_id\"=>\"1\", \"left_mue_formulary_ids\"=>[\"7581\"], \"action\"=>\"create_report\", \"controller\"=>\"informatics\", \"user_id\"=>339}"
hash = eval(ch)
# => {"report_name"=>"Study/Control: ABIRATERONE ACETATE - 20151413355", "left_mue_start_date"=>"02-26-2015", "left_mue_end_date"=>"03-19-2015", "right_mue_start_date"=>"02-26-2015", "right_mue_end_date"=>"03-19-2015", "report_formulary_id"=>",7581", "mue"=>"true", "mue_type"=>"study/control", "chain_id"=>"1", "left_mue_formulary_ids"=>["7581"], "action"=>"create_report", "controller"=>"informatics", "user_id"=>339}
PS: A JSON string should look as follows, meaning what you have is not JSON and hence you got JSON::ParserError for using JSON.parse on a non-JSON string :
"{\"report_name\":\"Study/Control: ABIRATERONE ACETATE - 20151413355\",\"left_mue_start_date\":\"02-26-2015\",\"left_mue_end_date\":\"03-19-2015\",\"right_mue_start_date\":\"02-26-2015\",\"right_mue_end_date\":\"03-19-2015\",\"report_formulary_id\":\",7581\",\"mue\":\"true\",\"mue_type\":\"study/control\",\"chain_id\":\"1\",\"left_mue_formulary_ids\":[\"7581\"],\"action\":\"create_report\",\"controller\":\"informatics\",\"user_id\":339}"
To avoid using eval you could use JSON.parse ch.gsub('=>', ':') this way you will get a HASH from your HASH stored as STRING
Last time when I got this issue, since the json file that I got from a API that contains a BOM
UTF-8 BOM is a sequence of bytes (EF BB BF)
What's different between UTF-8 and UTF-8 without BOM?
at the beginning of that string, but you know that part wouldn't display or as readable when we got the string from response. I try to use Ruby JSON to parse it, but I failed, I got the same exception with yours. just a reminder for others, when you get a Json response. By the way, this would be no problem while you are handling that in javascript, but with problems in Python or Ruby languages.
I ran into a similar problem, though it was failing while parsing \"\". This is in regards to using Pact.IO. I mention it here since this is the highest ranked Google result while looking for the error I encountered. The solution in my case was to change the body of a POST in my C# application so that it wasn't using empty string, but a null string. Basically I added this before my HTTP call.
if (request.Method == HttpMethod.Post && request.Content!=null && request.Content.GetType()==typeof(StringContent) && request.Content.ReadAsStringAsync().Result == String.Empty)
request.Content = new StringContent(null);
I am working on very complex and dynamic form where I do lot of calls to various methods to render partials depending upon values chosen for drop downs using jQuery. Problem is that after filling the form if it fails validation the form loses all the filled in values upon re-load. I got around this by sending some specific values from params{} hash to methods for my partials on re-load. But it is very cumbersome and I have large number of elements in params hash. How can send the whole params{} to another method in the same controller using jQuery?
Ok I tried this in my form:
$.post("/collections/show_selected_media_fields",{media_type: $("#collections_controller_ev0_media_id option:selected").text(), parent_form_action: "<%=params[:action]%>",ev0_manufacturer_id:"<%=params[:collections_controller_ev0].inspect%>", }, function(data) {$("#show_selected_media_fields").html(data);});
It produces following string sent as parameter:
Parameters: {"ev0_manufacturer_id"=>"{"client_asset_id"=>"", "status_id"=>"6", "server_
name"=>"", "media_id"=>"11", "serial_number"=>"", "evidence_number"
;=>"qwe", "notes"=>"", "model"=>"", "manufacturer_id"=>"69"
;, "interface"=>"SATA", "obtained_from"=>"wr", "evidence_type_id"=>"1"}
", "media_type"=>"Server", "parent_form_action"=>"quick_save"}
how can I convert this raw string to a hash in controller?
{"client_asset_id"=>
needs to be converted to
{"client_asset_id"=>"",... etc}
===========
ok I tried Tom's method. That produces the params as a string in the following shape. I tried to convert it into hash by doing an eval on it. But it errors out.
{commit=>Save, ev1_current_location_id=>, collections_controller_ev1=>{file_system=>NTFS, obtained_from=>, evidence_number=>, interface=>SAT
A, size_unit=>GB, manufacturer_id=>, encryption_version=>, media_id=>3, size=>, evidence_type_id=>3, other_encryption=>, encryption_method=>
N/A, serial_number=>, model=>, encryption_key=>}, ev0_from_location_category=>, ev0_obtained_from_email_id=>, collections_controller_ev0=>{o
btained_from=>, evidence_number=>, media_id=>1, evidence_type_id=>1, status_id=>6}, custody_action=>Create, collection=>{acquired_by=>Amande
ep Singh, custodian_id=>12, matter_id=>58, location=>sa Nose, client_id=>11, software_version=>, collection_date_time=>Fri Nov 30 14:28:06 -
0800 2012, acquisition_method=>Direct Collection, notes=>, software_id=>1}, _method=>put, utf8=>Γ£ô, ev1_current_location_category=>, ev0_cu
rrent_location_category=>, add_working_copy=>No, ev1_obtained_from_email_id=>, authenticity_token=>3vyn6057DDIyfgTnbckeh5heRTIgcVBfxtY89Krfr
/c=, ev1_existing_artifact_type=>, ev0_from_location_id=>, action=>quick_save, ev1_from_location_id=>, ev1_from_location_category=>, ev0_cur
rent_location_id=>, controller=>collections}
using .to_json and HTMLEntities gem I have gotten to a point where I have the following string. I need to convert it back to params hash. How to?
{"utf8"=>"Γ£ô","collection"=>{"acquired_by"=>"Amandeep Singh","notes"=>"","matter_id"=>"58","software_id"=>"1","acquisition_method"=>"Direct
Collection","client_id"=>"11","custodian_id"=>"0","collection_date_time"=>"Fri Nov 30 15=>52=>12 -0800 2012","software_version"=>"","locati
on"=>"sa Nose"},"ev0_current_location_id"=>"","ev1_existing_artifact_type"=>"","ev1_obtained_from_email_id"=>"","custody_action"=>"Create","
action"=>"quick_save","ev0_current_location_category"=>"","ev1_from_location_category"=>"","_method"=>"put","ev0_obtained_from_email_id"=>""
,"ev0_from_location_category"=>"","ev1_current_location_category"=>"","commit"=>"Save","controller"=>"collections","authenticity_token"=>"3v
yn6057DDIyfgTnbckeh5heRTIgcVBfxtY89Krfr/c=","ev0_from_location_id"=>"","ev1_current_location_id"=>"","collections_controller_ev0"=>{"status_
id"=>"6","media_id"=>"9","obtained_from"=>"","evidence_number"=>"","evidence_type_id"=>"1"},"collections_controller_ev1"=>{"media_id"=>"3","
encryption_key"=>"","encryption_version"=>"","size"=>"","obtained_from"=>"","encryption_method"=>"N/A","model"=>"","evidence_number"=>"","ev
idence_type_id"=>"3","size_unit"=>"GB","other_encryption"=>"","interface"=>"SATA","file_system"=>"NTFS","serial_number"=>"","manufacturer_id
"=>""},"ev1_from_location_id"=>"","add_working_copy"=>"No"}
========== edit==========
I am using the following in my view.
JSON( params[:collections_controller_ev0])
It sends following quoted string to my controller.
{"evidence_number":"","notes":"","size":"","model":"","evidence_type_id":"1","media_id":"1","obtained_from":"","status_id":"6","manufacturer_id":"","size_unit":"GB"}
I convert it into valid JSON string as below using gsub('"','"'). The output is a VALID JSON string as validated by http://jsonlint.com/ shown below.
{"evidence_number":"","notes":"123","size":"123","model":"123","evidence_type_id":"1","media_id":"1","obtained_from":"","status_id":"6","manufacturer_id":"69","size_unit":"GB"}
JSON.parse works without error on this string but does not produce a properly formed hash. It produces following:
notes123evidence_numbersize123model123evidence_type_id1media_id1obtained_fromstatus_id6size_unitGBmanufacturer_id69
Can someone please tell me how to correct this?
Try <%=raw params[:action]%> and <%=raw params[:collections_controller_ev0]%> instead
I think it will work fine.
$.post("/collections/show_selected_media_fields",{media_type: $("#collections_controller_ev0_media_id option:selected").text(), parent_form_action: <%=raw params[:action]%>,ev0_manufacturer_id:<%=raw params[:collections_controller_ev0].inspect%>, }, function(data) {$("#show_selected_media_fields").html(data);});
params is basically a hash. So you can use .to_json on it. Then in your controller you can convert it from JSON to a hash with JSON.parse().
It's generally a much better idea to use JSON if you're going to be dealing with it in Javascript or HTML at all.
The method showed in my last edit works! it produces correct hash.
I'm on Rails 2.3 and I'm trying to convert a string that is JSON-formatted to a Rails hash. However, when I use JSON.parse I get a JSON string without the delimiters:
{"source_id":40007,"object":"86088947610496.1","coursewalk_id":"86088947610477.1","description":"","image_uri":"db\/db-files\/
Image_2011-09-24_14.37.37__0000.jpg","latitude":"38.0113439821061","letter":"","letter_A":"","letter_B":"","letter_C":"","lett
er_D":"","letter_E":"","letter_F":"","longitude":"-78.7576854509104","number":"1","mcw_id":71}
Results of JSON.parse:
number1letter_Bcoursewalk_id86088947610477.1letter_Clatitude38.0113439821061letter_Dletter_Eletter_Fmcw_id71longitude-78.75768
54509104letterdescriptionobject86088947610496.1source_id40007letter_Aimage_uridb/db-files/Image_2011-09-24_14.37.37__0000.jpg
Code:
puts string_to_parse
fence_parsed = JSON.parse(string_to_parse)
puts fence_parsed
Any ideas?
Thanks,
Nick
That's just because you're using "puts". If you just type fence_parsed, or p fence_parsed you'll get what you're looking for. puts calls to_s. I hope this clears it up for you, if not let me know and I'll elaborate.
I have a simple call
JSON.parse(Panda.get("/videos/#{self.panda_video_id}/encodings.json"))
Which returns :
can't convert Array into String
This is because the Panda.get("/videos/#(self.panda_video_id}/encodings.json") call returns an array in the new Panda 1.0.0 gem.
I also tried :
JSON.parse(Panda.get("/videos/#{self.panda_video_id}/encodings.json").to_s)
This returns:
705: unexpected token at 'created_at2010/07/19 20:28:13 +0000video_id4df3be7b6c6888ae86f7756c77c92d8bupdated_at2010/07/19 20:28:30 +0000started_encoding_at2010/07/19 20:28:21 +0000id6e2b35ad7d1ad9c9368b473b8acd0abcextname.mp4encoding_time0encoding_progress100file_size513300height110statussuccesswidth200profile_idf1eb0fe2406d3fa3530eb7324f410789'
Question
How would you turn the call at the top so that it returns a string?
does the following work:
panda_data = Panda.get("/videos/#{self.panda_video_id}/encodings.json")
JSON.parse(panda_data.to_s)
if it doesn't what is the error output?
If panda_data is an array, panda_data.to_s is guaranteed to return a string
Not that anyone had a chance at this, but
Panda_Gem since -v=0.6 has made all Panda.[get, post, etc.] requests return a hash. So you don't need the JSON.parse anymore. Removing the JSON.parse allows it to work.