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https://github.com/davbre/mira

Create simple APIs from CSV files
https://github.com/davbre/mira

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Create simple APIs from CSV files

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README 

        
# Mira



Mira is a Ruby on Rails application which gives you a simple HTTP API for CSV files.



## Summary



1. You create a Mira *project*. A project is simply a home for one or more CSV files, along with a datapackage.json file. More on that now...



2. You provide Mira with information about your CSV files by uploading a datapackage.json file to the project. This file provides metadata for the CSV files you plan to upload to the project. i.e. file names, columns names and types, delimiters etc. See [here](http://data.okfn.org/doc/tabular-data-package) and [here](https://frictionlessdata.io/docs/tabular-data-package/) for more information about datapackage.json files and tabular data packages.



3. With the datapackage.json file Mira then does the following:

    - it creates an empty database table for each CSV file specified in the datapackage.json file.

    - it creates an API to these database tables which you can use to read and write data.



4. You write data to the database tables by uploading CSV files, or by using a JSON API.



5. You can query the data using simple API requests. Consider a table `mytable` in a project, with columns `col1`, `col2` and `col3`. To get rows where `col1` equals "XXX", `col2` equals "YYY" and `col3` equals "ZZZ", you could make the following `GET` request:



  

  http://localhost:3000/api/projects/1/tables/mytable/data?col1_eq=XXX&col2_eq=YYY&col3_eq=ZZZ

  



  See the demo for more details on how the data can be queried.



6. You can generate API keys to control the reading and writing data.



## Quick Start



#### Pre-requisites

- You're familiar with [Ruby](https://www.ruby-lang.org/en/) and [Ruby on Rails](http://rubyonrails.org/).



- PostgreSQL is installed



  [https://www.digitalocean.com/community/tutorials/how-to-use-postgresql-with-your-ruby-on-rails-application-on-ubuntu-14-04] (https://www.digitalocean.com/community/tutorials/how-to-use-postgresql-with-your-ruby-on-rails-application-on-ubuntu-14-04)



---



1. Clone the repository



2. Run bundle



        bundle install



3. Update the config/database.yml file with your database credentials. Assuming you've created a user "mira" with full access to a database of the same name:



        default: &default

          adapter: postgresql

          encoding: unicode

          pool: 5

          host: localhost

          port: 5432

          username: mira

          password: **your_password_here**



        development:

          <<: *default

          database: mira_dev



        test:

          <<: *default

          database: mira_test



4. Create and migrate database, and seed database with a single admin user (email = [email protected] and password = topsecret):



        rake db:create

        rake db:migrate

        rake db:seed



5. Start your local development server



        rails s



6. In a separate terminal start a background job to process uploaded files



        rake jobs:work



7. Open up the Mira homepage:



    [http://localhost:3000] (http://localhost:3000)



8. Download sample csv files + their datapackage.json file:



    [mira_sample_data.tar.gz] (https://github.com/davbre/dummy-sdtm/blob/master/output/mira_sample_data/mira_sample_data.tar.gz)

    or

    [mira_sample_data.zip] (https://github.com/davbre/dummy-sdtm/blob/master/output/mira_sample_data/mira_sample_data.zip)



9. Log in, create a new project, first upload the datapackage.json file, then the sample csv files



10. Navigate to the following address for the project's API details:



    [http://localhost:3000/projects/1/api-details](http://localhost:3000/projects/1/api-details)



## Extra Notes



Assuming a write API key has been generated, here's how you can write data:



curl -d "data[col1]=value1&data[col2]=val2" -H "X-Api-Key: 6041fa394bc84abe46ffdb71" http://localhost:3000/api/projects/1/tables/mytable/data