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{r4googleads} was designed with forking, tweaking and community contribution in mind. Hence this guide should support users to understand its architecture, adapt {r4googleads} to their needs, extend the package and eventually contribute. We basically cover three aspects in this guide: authentication, the S3 Object Orientation Approach and contribution through pull requests from feature based branches.
In order to run queries, you will need a Client ID, a Client Secret, a developer token and a client token from Google. Our authenticate() functions walks you through Google’s OAUTH process and stores the client token to a hidden .RData file. Subsequent queries will use the client token if the hidden .google.auth.RData file exists. Otherwise authenticate() invokes the dialog with Google.
S3 Object Orientation is an R specific implementation of object orientation (OO). S3 is far less strict of a concept than it is in most other languages, but it is a reasonable, light weight choice for {r4googleads} as we use object orientation only to dispatch methods.
{r4googleads} uses three S3 classes to represent Google Services in R: googleAdsSearch, googleAdsFields and listAccessibleCustomers. Objects of one of these classes can be passed on to one single query function , i.e., query_google_ads(). Internally, this function uses the S3 generic build_handle and its class specific methods to build query specific curl handles implementing a light form of polymorphism avoiding a potentially thick forrest of if-clauses. This implementation keeps the code transparent and easy to read in an effort to facilitate adding more Google Services in the future.
{r4googleads} makes use of the REST interface of the Google Ads API. For each REST resource / service of the Google Ads API we construct a S3 Class in R/google_services_construtors.R. This modular approach enables the extension of {r4googleads} service by service.
In case you want to contribute to {r4googleads}, you’re more than welcome to do so. Please make sure you understand the implications of publishing under an MIT License and make sure you are fine with publishing under the license we use.
Even as the core team of {r4googleads} we develop new features by creating a new git branch first. For example when working on this documentation, we created a documentation specific branch and merged it into our main branch after review once we were done working. This allows other contributors to work on other features with as little interference as possible. Also, in case a specific feature or developer has a longer development cycle than others, they can simply merge the main branch that might have gotten new features in the meantime, to their feature branch from time to time.
If you do not have direct access to the original {r4googleads} repository, simply fork the repository to your own GitHub account and work on your feature. Once you’re done and have tested your new feature thoroughly issue a pull request (aka merge request) to merge your new feature into {r4googleads} dev branch. Please be patient with the acceptance into the main branch as this branch will be deployed to CRAN. Hence we want to take extra care and review thoroughly before introducing potential breaking changes.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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