What's a good single chain ring size for a 7s 12-28 cassette for better hill climbing? You would require the gem in your code like this: Then you can parse your JSON string like this: There are also other implementations of JSON for Ruby: To convert a Ruby hash to json string, simply call to_json. Stack Overflow for Teams is moving to its own domain! "if all that's in the hash is strings, symbols, and numbers,". Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. SQL PostgreSQL add attribute from polygon to all points inside polygon but keep all points not just those that fall inside polygon. Choose only those attributes you really need in the JSON response. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. If proc was given, it will be called with any nested Ruby object as an argument recursively in depth first order. Does squeezing out liquid from shredded potatoes significantly reduce cook time? Find centralized, trusted content and collaborate around the technologies you use most. red eye warrior astd. Just for the sake of understanding. That is ugly, and honestly shouldn't be used as a production solution. how to convert from json string to ruby hash; from_json to hash ruby; json hash ruby; convert json object to ruby hash; convert hash to json ruby perl; array of hashes to json file ruby; json parse into ruby hash; rails convert json to hash; parse json to hash rails; pass hash ruby to json; Once we have the file loaded, we can parse the JSON data using the JSON.parse method. The gsub and gsub! These method. What is the effect of cycling on weight loss? Making statements based on opinion; back them up with references or personal experience. 3. book.as_json. Is the structure "as is something" valid and formal? Code Review Stack Exchange is a question and answer site for peer programmer code reviews. Downvoting without an explanatory comment is the cancer of Stack Overflow. What is the best way to sponsor the creation of new hyphenation patterns for languages without them? Just replacing the, I solved it (ugly fix which should be pretty safe) with. With [cci]require 'json' [/cci], you can easily parse a JSON formatted string into a Ruby hash with [cci]JSON.parse (json_string) [/cci]. Hash or Array Because strings are valid JSON string and can be parsed successfully by JSON.parse. We also have to convert any symbols into regular string-keys as symbols aren't appropriate in JSON. What if any design issues are there in this method of loading configuration data from YAML in Ruby? Is it considered harrassment in the US to call a black man the N-word? In your program you require the gem. We all (should) know how code gets used in ways you wouldn't have expected. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Thank you so much buddy you made my day ummmaaahhh, i did that temp.to_json gives me "{\"user_agent\"=>\"curl/7.22.0 (x86_64-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3\", \"host\"=>\"localhost:4567\", \"version\"=>\"HTTP/1.1\", \"http_token\"=>\"375fe428b1d32787864264b830c54b97\", \"accept\"=>\"*/*\"}", i stored it in t1 and then access like t1['version']. However, its unable to handle hashes that have a date string in them (our date strings end up not being surrounded by strings, which is where the big issue comes in): string = '{'last_request_at' : 2011-12-28 23:00:00 UTC }' By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Calculate paired t test from means and standard deviations. Let me test first. 1. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. When retrieving that hash, it was a string. I prefer to abuse ActiveSupport::JSON. RESULT OUTPUT: {"user_id"=>"11", "blog_id"=>"2", "comment_id"=>"1"}. How can i extract files in the directory where they're located with the find command? class #=> Hash book.to_json. Stack Overflow for Teams is moving to its own domain! Using inspect is probably confusing you because it will turn what looks like an array of hashes into a pseudo-string. Is there a safe way to "convert" it to real JSON? USING EVAL can be dangerous here, according to my teacher. When working with Ruby Hashes, you may find that there are two ways to interact with them, using the String notation commonly seen with JSON, but also using Ruby's Symbol concept. The test better not re-state it, it'll create unnecessary details as passive text. I have a mobile application that makes a request to my Rails backend. You could add a gsub of all. Any sort of splitting/scanning is prone to errors if the string contains tokens that aren't part of the syntax. So you can also use File.read instead if you wanted. I came to this question after writing a one-liner for this purpose, so I share my code in case it helps somebody. Is cycling an aerobic or anaerobic exercise? JSON serializes hashes using : to delimit the key/value pairs. Make a wide rectangle out of T-Pipes without loops. rev2022.11.3.43005. An ordered list of values. Yeah, at the end of the day whatever works. String to hash in Ruby without JSON.parse, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. This and to_yaml solves my problem since I have some control of the way the string is generated. How do I convert a String object into a Hash object? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Now, I want to convert this string to a hash using: The problem now with just replacing ' with " is dangerous if any strings includes ' or ". The danger here is analogous to SQL injection danger. Connect and share knowledge within a single location that is structured and easy to search. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Convert JSON to string or hash in ruby; How to convert JSON to a Ruby hash; what is the best way to convert a json formatted key value pair to ruby hash with symbol as key? Example string showing why David's teacher is correct: '{:surprise => "#{system \"rm -rf * \"}"}'. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Ruby String Substitution. Stack Overflow for Teams is moving to its own domain! Often referred to as an _object_, hash table, record, struct, keyed list, or associative array. The best answers are voted up and rise to the top, Not the answer you're looking for? Also, if you down-vote me, please provide feedback so we can all learn together. This is absolutely forbidden if user input can ever wind its way into your string. You use Marshal exactly the same way you use YAML, but replace the word YAML with Marshal :) ```ruby a = A.new("hello world", 5) puts a serialized_object = Marshal::dump(a) puts Marshal::load(serialized_object) In A: hello world, 5 In A: hello world, 5. ruby on rails json string to hash; ruby convert string to json hash; javascript convert ruby to_hash to json; how to json into hash ruby; ruby write json file; ruby hashto json convert; ruby import from json to hash; ruby hash tp string json; ruby from hash to json; ruby json string to hash key; write data to json file ruby; ruby txt file to . If the letter V occurs in a few native words, why isn't it included in the Irish Alphabet? Steps Built on two universally available structures: 1. But it's the shortest one yet. How to remove a key from Hash and get the remaining hash in Ruby/Rails? Saving for retirement starting at 68 years old, Multiplication table with plenty of comments. :). Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. How to help a successful high schooler who is failing in college? How can we create psychedelic experiences for healthy people without drugs? For example: require 'json' raw_data = File. This code starts with a test string to exercise all the conversions, Here are some notes on the other solutions here, This short little snippet will do it, but I can't see it working with a nested hash. My situation, I was pulling some data from an API and writing it to a file locally. Rails return JSON serialized attribute with_indifferent_access, Ruby on sinatra, JSON::parserError issue and 757: unexpected token, Rails string of array of hashes with keys - convert to array of hashes, Remove all indents and spaces from JSON string except inside its value in Ruby, QGIS pan map in layout, simultaneously with items on top. How can I parse string(ruby hash) to JSON or Array in Rhodes? Eval takes any ruby code and runs it. Find centralized, trusted content and collaborate around the technologies you use most. How do I simplify/combine these two methods for finding the smallest and largest int in an array? Replacing outdoor electrical box at end of conduit. 2022 Moderator Election Q&A Question Collection. yes downvoting should require an explanation and show who downvotes. Making statements based on opinion; back them up with references or personal experience. Even if you think you'll never open this up more publicly, someone else might. This solution also has the bonus of working on multi-level hashes recursively, since it leverages JSON#parse. [] Can Ruby convert an acts_as_nested_set to a JSON hash cleanly without recursion? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A collection of name/value pairs. "/> bengali book online. I know of one corner case which this solution doesn't handle which is single character symbols made up of odd, but allowed characters. By using require 'json', you get access to the to_json method on hashes. How to check whether a string contains a substring in Ruby. If I start with the hash {:a => Object.new}, then its string representation is "{:a=>#}", and I can't use eval to turn it back into a hash because # isn't valid Ruby syntax. Asking for help, clarification, or responding to other answers. So clearly not an alias: one returns a hash, the other a string. Would result in an invalid JSON string error when it tries to parse the date value. Connect and share knowledge within a single location that is structured and easy to search. [Solved]-Convert JSON string to hash-ruby Search score:11 Accepted answer It's most likely because this isn't valid JSON. Built on two universally available structures: 1. - Perl . So for a quick and dirty simple JSON string you might try bulding a Hash of values: hash = {} hash['KeyOne']= somevalue.. etc . How to parse a string representation of a hash, Passing hash as values in hidden_field_tag. How to turn into a hash what has been made into a string of a hash? How to get a specific output iterating a hash in Ruby? h = { "first_name" => "John", "last_name" => "Doe" } h.each do |key, value| puts "#{key} = #{value}" end . How to convert a ruby hash object to JSON? Connect and share knowledge within a single location that is structured and easy to search. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 4. Does squeezing out liquid from shredded potatoes significantly reduce cook time? I want to access json string like hash object so that i can access json using key value like temp["anykey"]. because it isn't a JSON serialized object. The string can have any depth of nesting. Should we burninate the [variations] tag? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, It's an array of hashes, being represented as a string because you used. Fourier transform of a functional derivative. Does a creature have to see to be affected by the Fear spell initially since it is an illusion? Let's see what Ruby itself can offer us in JSON class documentation. I think it's pretty cute though. Rails - Saving Ransack Query for later use, How to convert a string to lower or upper case in Ruby. What is the best way to sponsor the creation of new hyphenation patterns for languages without them? json = <<~JSON { foo: { bar: "baz" } } JSON > JSON.parse(json, symbolize_names: true) => { foo: { bar: "baz" } } Let's check how it rolls on Array with collection of hashes: > JSON.parse(" [ {\"foo\": {\"bar\":\"baz\"}}]", symbolize_names: true) => [ { foo: { bar: "baz" } }] Short story about skydiving while on a time dilation drug, How to can chicken wings so that the bones are mostly soft, Two surfaces in a 4-manifold whose algebraic intersection number is zero. I had the same problem. So, I tried to convert it to a JSON object: I'm using Ruby 1.9.3 with Rhodes 3.5.1.12. I didn't want to call eval(str) because of security concerns. hash = JSON.parse (test).deep_symbolize_keys. I have the following JSON string which I get like this from an external API. Generating JSON . How can we build a space probe's computer to survive centuries of interstellar travel? you are missing ActiveSupport::JSON. How to convert string to hash WITHOUT EVAL. Why do I get two different answers for the current through the 47 k resistor when I do a source transformation? Would it be illegal for me to act as a Civillian Traffic Enforcer? It executes whatever it is passed, you must be 110% sure (as in, at least no user input anywhere along the way) it would contain only properly formed hashes or unexpected bugs/horrible creatures from outer space might start popping up. Does activating the pump in a vacuum chamber produce movement of the air inside? At first you have to require 'json', then you can parse a JSON string via the JSON.parse () command. Hash keys are assumed to be a string, symbol, or integer. Thus, "generally works" is a nice formula to state that stuff, well, generally works. All Languages >> Javascript >> ruby hash to json string "ruby hash to json string" Code Answer's. Search Loose Match Exact Match. Thanks for the pointer to .decode, it worked great for me. Otherwise generate a JSON text from the Ruby data structure object and return it. Answers related to "convert JSON to hash in ruby" array to hash ruby string to hash ruby convert string to hash ruby ruby map hash ruby assign value to hash ruby inject hash ruby hash from array ruby hash print ruby json parse symbolize_keys ruby hash transform keys change elements in ruby hashes hash get key ruby Why is proving something is NP-complete useful, and where can I use it? Does squeezing out liquid from shredded potatoes significantly reduce cook time? How can I find a lens locking screw if I have lost the original one? While the result of #as_json may look like JSON, it's actually a Ruby hash. To whoever downvoted me. | 9to5Answer Solution 1 You want JSON.parse or JSON.load: def load_user_lib( filename ) JSON.parse( IO.read(filename) ) end The key here is to use IO.read as a simple way to load the JSON string from dis. Generating JSON from Arrays . It is easy for us humans to read and write. Is a planet-sized magnet a good interstellar weapon? Using word boundaries is more flexible: I have a light saber with me. Multiplication table with plenty of comments, Non-anthropic, universal units of time for active SETI. Any sort of splitting/scanning is prone to errors if the string contains tokens that aren't part of the syntax. What's a good single chain ring size for a 7s 12-28 cassette for better hill climbing? When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. Do US public school students have a First Amendment right to be able to perform sacred music? Does the Fog Cloud spell work in conjunction with the Blind Fighting fighting style the way I think it does? What does puncturing in cryptography mean. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Also for the sake of understanding: How would. require 'json' And then you may create your "Hashfield" string by doing: hash_as_string = hash_object.to_json and write this to your flat file. Making statements based on opinion; back them up with references or personal experience. Wow. Just construct a hash straight away with each_with_object or construct an array of pairs, and turn that into a hash. Anyone have a solution? Load a ruby data structure from a JSON source and return it. To make this answer even more applicable to the OP's question, if your string representation of a hash is called 'strungout' you should be able to do hashit = JSON.parse(strungout.to_json) and then select your items inside hashit via hashit['keyname'] as normal. I realized that I was trying to solve the wrong problem. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. I fix the problem with the function eval. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. [] Rails - recovering database from Production.log [] Database sharding and Rails Here's the code I used: Works on the command line, but I get "stack level to deep" when I put this in an intializer Hey @Lex, what method does is described in its RubyDoc comment. 2 Code Answers . class #=> String So if we start with a hash, call #as_json on it, then get back a hash what have we gained? Is there a trick for softening butter quickly? How do I get the current absolute URL in Ruby on Rails? Use this piece of code. How to convert ruby formatted json string into json object? How can we create psychedelic experiences for healthy people without drugs? Is there something like Retr0bright but already made and trustworthy? To modify the default options pass in the optional options argument as well. Sort: Best Match . 2. Using Rails 4 or above, If you want to have symbol keys instead of string keys, you can use deep_symbolize_keys method. Can "it's down to him to fix the machine" and "it's up to him to fix the machine"? Would love any suggestions on how to handle this case, works in rails 4.1 and support symbols without quotes {:a => 'b'}. Is this a commercial API? Find centralized, trusted content and collaborate around the technologies you use most. Great explanation :). You can install the json gem for Ruby. Not the answer you're looking for? - cixelsyd Jan 15, 2018 at 20:28 As you can see, according to the output the objects before and after serialization are the same. If a creature would die from an equipment unattaching, does that creature die with the effects of the equipment? How to convert a string to a hash in Ruby on Rails without using eval? The block is this thing between brackets { . Finding features that intersect QgsRectangle but are not equal to themselves using PyQGIS. These not show. }. In JSON all property names must be double-quoted and string values must also be double-quotes. How to convert ruby formatted json string to json hash in ruby? If object is string-like, parse the string and return the parsed result as a Ruby data structure. The tests in https://github.com/bibstha/ruby_hash_parser/blob/master/test/test_hash_parser.rb give you more examples of the things I've tested to make sure eval is safe. Example. What does puncturing in cryptography mean. To learn more, see our tips on writing great answers. How to find a hash key containing a matching value. Best Match; Relevance; Date; Quality Score; Views; Up Votes; how to json into hash ruby . If proc was given, it will be called with any nested Ruby object as an argument recursively in depth first order. Reshape hash of hashes into array of modified hashes without using nested each? Thanks for contributing an answer to Code Review Stack Exchange! How to convert ruby formatted json string to json hash in ruby? Unfortunately the conversion to yaml isn't simple and you'd probably want to borrow it from AS if you don't have AS in your project already. Since JSON keys are all strings, parsing a JSON document will produce a Ruby hash with string keys by default. Why is SQL Server setup recommending MAXDOP 8 here? That's in addition that the real problem was invalid json as MyCah mentioned. I want to access json string like hash object so that i can access json using key value like temp["anykey"]. Why is SQL Server setup recommending MAXDOP 8 here?

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