How to Fix GetBookings Not Declared by Package Models Error in Golang Controllers
Learn how to resolve the 'GetBookings not declared by package models' error in Golang by correctly instantiating your struct and calling its methods.
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This video is based on the question https://stackoverflow.com/q/77624510/ asked by the user 'Abhra Sarkar' ( https://stackoverflow.com/u/11292337/ ) and on the answer https://stackoverflow.com/a/77624559/ provided by the user 'ABDULLOKH MUKHAMMADJONOV' ( https://stackoverflow.com/u/10303199/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.
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Understanding the GetBookings Not Declared by Package Models Error in Golang
If you're new to Golang, encountering the error message "GetBookings not declared by package models" can be frustrating. This error typically arises when you try to call a method on a struct without properly creating an instance of that struct. In this guide, we'll explore how to address this issue and successfully utilize struct methods within different packages.
Problem Overview
The Error
You have a model file that includes a struct method, GetBookings, which you want to use in your controller. However, when attempting to call this method, you receive an error indicating that it hasn't been declared by the models package.
Code Context
Let's quickly review the relevant code snippets you may have:
Controller Code
[[See Video to Reveal this Text or Code Snippet]]
Model Code
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As you can see, you're trying to invoke GetBookings() directly from the models package, instead of properly creating an instance of BookingModel.
Solution: Creating an Instance of Your Struct
To resolve this error, you need to create an instance of BookingModel before you can call its method. Here’s a step-by-step guide on how to do that:
Step 1: Instantiate BookingModel
The first thing you'll need to do inside your GetBookings controller function is create an instance of the BookingModel.
Step 2: Call the Method on the Instance
Once you have an instance, you can call the GetBookings() method. Here’s the corrected version of your controller function:
[[See Video to Reveal this Text or Code Snippet]]
Conclusion
By instantiating the BookingModel struct, you can now successfully call the GetBookings method in your controller without encountering the "GetBookings not declared by package models" error.
Key Takeaways
Always create an instance of a struct before calling its methods.
Error handling is crucial for ensuring your application behaves as expected when something goes wrong.
Proper struct initialization can simplify method calls across different packages.
With this approach, you should be well-equipped to manage struct methods across packages in Golang. If you have any further questions or issues, feel free to ask!