Home/ Ghulam Nabi/Answers
  1. Asked:

    What changes need to do to work with rails 7 without postgres_ext

    Best Answer
    Ghulam Nabi

    It seems like you're encountering a problem with your SQL query. The error is indicating that the block_titles column in your sections table is being queried with an invalid array literal, which is the empty string (''). You'll need to modify your code to avoid using the invalid array literal and enRead more

    It seems like you’re encountering a problem with your SQL query. The error is indicating that the block_titles column in your sections table is being queried with an invalid array literal, which is the empty string ('').

    You’ll need to modify your code to avoid using the invalid array literal and ensure that the block_titles column is always queried with a valid array.

    As for the larger problem of transitioning from Rails 4.2.11 to a newer version without postgres_ext, you may need to do some additional research and testing to see how your project will be affected by this change, as well as make any necessary modifications to ensure compatibility with the new version of Rails and without postgres_ext. Keep in mind that this may require updating the code and dependencies in your project, as well as potentially updating the database schema and data.

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  2. Asked:

    Add cypress code coverage to react project created without cra

    Best Answer
    Ghulam Nabi

    To add code coverage to a React project created without Create React App (CRA), you need to instrument the source code by running it through the Babel plugin "istanbul". Here are the steps: Install required packages: npm install istanbul babel-core babel-loader --save-dev Add a new webpack rule to yRead more

    To add code coverage to a React project created without Create React App (CRA), you need to instrument the source code by running it through the Babel plugin “istanbul”. Here are the steps:

    1. Install required packages:

    npm install istanbul babel-core babel-loader --save-dev

    1. Add a new webpack rule to your webpack config file, which is usually located at webpack.config.js or webpack.config.babel.js, for processing files through the istanbul plugin:

    module: {
    rules: [
    {
    test: /\.(js|jsx|ts|tsx)$/,
    use: {
    loader: 'babel-loader',
    options: {
    plugins: ['istanbul'],
    },
    },
    exclude: /node_modules/,
    },
    // ...
    ],
    }

    1. Add the start-server-and-test package to your project:

    npm install start-server-and-test --save-dev

    1. In your cypress.config.ts, add the following code to include the @cypress/code-coverage/task:

    import { defineConfig } from "cypress/types/index";

    export default defineConfig({
    e2e: {
    setupNodeEvents(on, config) {
    require("@cypress/code-coverage/task")(on, config);
    return config;
    },
    video: false,
    baseUrl: "http://localhost:3000/",
    },
    });

    1. In your e2e.ts, include the following code to use the @cypress/code-coverage/support:

    import "@cypress/code-coverage/support";

    1. Add the following script to your package.json:

    "test:e2e:run": "start-server-and-test start http://localhost:9000 cy:run",

    1. Run your e2e tests with the following command:

    npm run test:e2e:run

    After these steps, you should be able to see the code coverage information in the cypress test runner.

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  3. Asked:

    Paging 3 – Use Network data as primary source and local data as addition

    Best Answer
    Ghulam Nabi

    You could try using the NetworkBoundResource architecture pattern. The idea is to have a repository layer that combines both the local database (using Room) and the network data. The repository layer returns a resource object that represents the state of the data being loaded, such as loading, succeRead more

    You could try using the NetworkBoundResource architecture pattern. The idea is to have a repository layer that combines both the local database (using Room) and the network data. The repository layer returns a resource object that represents the state of the data being loaded, such as loading, success, and error.

    You can define a NetworkBoundResource as follows:

    class NetworkBoundResource<ResultType, RequestType>
    @MainThread constructor(private val appExecutors: AppExecutors) {

    private val result = MediatorLiveData<Resource<ResultType>>()

    init {
        result.value = Resource.loading(null)
        val dbSource = loadFromDb()
        result.addSource(dbSource) { data ->
            result.removeSource(dbSource)
            if (shouldFetch(data)) {
                fetchFromNetwork(dbSource)
            } else {
                result.addSource(dbSource) { newData ->
                    setValue(Resource.success(newData))
                }
            }
        }
    }

    @MainThread
    private fun setValue(newValue: Resource<ResultType>) {
        if (result.value != newValue) {
            result.value = newValue
        }
    }

    private fun fetchFromNetwork(dbSource: LiveData<ResultType>) {
        val apiResponse = createCall()
        result.addSource(dbSource) { newData ->
            setValue(Resource.loading(newData))
        }
        result.addSource(apiResponse) { response ->
            result.removeSource(apiResponse)
            result.removeSource(dbSource)
            when (response) {
                is ApiSuccessResponse -> {
                    appExecutors.diskIO().execute {
                        saveCallResult(processResponse(response))
                        appExecutors.mainThread().execute {
                            result.addSource(loadFromDb()) { newData ->
                                setValue(Resource.success(newData))
                            }
                        }
                    }
                }
                is ApiEmptyResponse -> {
                    appExecutors.mainThread().execute {
                        result.addSource(loadFromDb()) { newData ->
                            setValue(Resource.success(newData))
                        }
                    }
                }
                is ApiErrorResponse -> {
                    onFetchFailed()
                    result.addSource(dbSource) { newData ->
                        setValue(Resource.error(response.errorMessage, newData))
                    }
                }
            }
        }
    }

    protected open fun onFetchFailed() {}

    fun asLiveData() = result as LiveData<Resource<ResultType>>

    @WorkerThread
    protected open fun processResponse(response: ApiSuccessResponse<RequestType>) = response.body

    @WorkerThread
    protected abstract fun saveCallResult(item: RequestType)

    @MainThread
    protected abstract fun shouldFetch(data: ResultType?): Boolean

    @MainThread
    protected abstract fun loadFromDb(): LiveData<ResultType>

    @MainThread
    protected abstract fun createCall(): LiveData<ApiResponse<RequestType>>
}

     

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  4. Asked:

    Programmatically set package as device owner

    Best Answer
    Ghulam Nabi

    To programmatically set a package as the device owner, you need to use the Android Device Policy API. The following code shows how to do it programmatically: public class DeviceOwnerReceiver extends DeviceAdminReceiver { public static ComponentName getComponentName(Context context) { return new CompRead more

    To programmatically set a package as the device owner, you need to use the Android Device Policy API. The following code shows how to do it programmatically:

    public class DeviceOwnerReceiver extends DeviceAdminReceiver {

  public static ComponentName getComponentName(Context context) {
    return new ComponentName(context, DeviceOwnerReceiver.class);
  }

  public static Intent getIntentToEnable(Context context) {
    Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
    intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, getComponentName(context));
    intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "This is necessary to set the app as the device owner");
    return intent;
  }

  @Override
  public void onEnabled(Context context, Intent intent) {
    super.onEnabled(context, intent);
    DevicePolicyManager devicePolicyManager = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
    if (devicePolicyManager != null) {
      devicePolicyManager.setDeviceOwner(getComponentName(context), BuildConfig.APPLICATION_ID);
    }
  }
}

    In the code above, you need to create a DeviceAdminReceiver class and override the onEnabled method. In the onEnabled method, you can use the DevicePolicyManager class to set the device owner.

    After creating the class, you need to declare it in the AndroidManifest.xml file:

    <receiver
  android:name=".DeviceOwnerReceiver"
  android:permission="android.permission.BIND_DEVICE_ADMIN">
  <meta-data
    android:name="android.app.device_admin"
    android:resource="@xml/device_admin_receiver" />

  <intent-filter>
    <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
  </intent-filter>
</receiver>

    The device_admin_receiver.xml file should look like this:

    <?xml version="1.0" encoding="utf-8"?>
<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
  <uses-policies>
    <limit-password />
    <watch-login />
    <reset-password />
    <force-lock />
    <wipe-data />
    <expire-password />
    <encrypted-storage />
    <disable-camera />
  </uses-policies>
</device-admin>

    Once the DeviceOwnerReceiver class is declared and the device owner is set, your app can run as the device owner.

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  5. Asked:

    How to make a slick slider continuously autoplay, but speed up scroll on arrow/dot click?

    Best Answer
    Ghulam Nabi

    To make a Slick slider continuously autoplay but speed up the scroll on arrow/dot click, you can set the autoplaySpeed property to the desired value for the continuous autoplay, and set the speed property to a higher value to speed up the scroll on arrow/dot click. Here's an updated code example: $(Read more

    To make a Slick slider continuously autoplay but speed up the scroll on arrow/dot click, you can set the autoplaySpeed property to the desired value for the continuous autoplay, and set the speed property to a higher value to speed up the scroll on arrow/dot click.

    Here’s an updated code example:

    $(document).ready(function(){
  $('.test').slick({
    slidesToShow: 3,
    slidesToScroll: 1,
    autoplay: true,
    autoplaySpeed: 6000,
    speed: 500,
    dots: true,
    cssEase: 'linear',
    waitForAnimate: false,
    pauseOnFocus: false, 
    pauseOnHover: false
  });
});
.slick-prev:before,
.slick-next:before 
{
    color: black!important;
}

    In this example, the autoplaySpeed property is set to 6000, which will control the speed of the continuous autoplay. The speed property is set to 500, which will determine the speed of the scroll when clicking the arrow or dot.

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  6. Asked:

    Win32: how does the OS decide to re-assign focus on window close?

    Best Answer
    Ghulam Nabi

    The decision to reassign focus when a window is closed is typically based on the window's behavior when being closed. This behavior is typically controlled by the application that created the window and the specific action that was taken to close the window (e.g. clicking the close button, using a kRead more

    The decision to reassign focus when a window is closed is typically based on the window’s behavior when being closed. This behavior is typically controlled by the application that created the window and the specific action that was taken to close the window (e.g. clicking the close button, using a keyboard shortcut, etc.).

    For example, some applications may choose to hide the window when it is closed instead of destroying it, which would not trigger the OS to reassign focus. On the other hand, when a WPF window is collapsed, it is treated as if it were closed and the OS will reassign focus as it would with a closed window.

    It’s also worth noting that the behavior of window management in Windows can vary depending on the specific version of the operating system and the desktop environment being used.

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  7. Asked:

    How can I run this function, according to the value change of element with if-condition?

    Best Answer
    Ghulam Nabi

    The function appears to be using Cypress commands to check the value of a switch element with the attribute data-test="form-switch". If the value is true, it uses the cy.isContain() command to check if the text 'true' is present in an element with the class .item-undefined-switch and the attribute dRead more

    The function appears to be using Cypress commands to check the value of a switch element with the attribute data-test="form-switch". If the value is true, it uses the cy.isContain() command to check if the text ‘true’ is present in an element with the class .item-undefined-switch and the attribute data-test="item-undefined-email". If the value is false, it checks if the text ‘false’ is present in the same element.

    To run this function, simply call it within a Cypress test:

    it('checks the switch', () => {
    cy.visit('your-url-here');
    this.assertSwitch();
});

     

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  8. Asked:

    Cypress runs old code instead of running updated code changes

    Best Answer
    Ghulam Nabi

    This issue could be caused by various factors, including caching, using outdated dependencies, or having a conflicting process running in the background. Try the following steps to resolve the issue: Clear the Cypress cache by running the command "yarn cypress cache:clear". Update your dependenciesRead more

    This issue could be caused by various factors, including caching, using outdated dependencies, or having a conflicting process running in the background.

    Try the following steps to resolve the issue:

    1. Clear the Cypress cache by running the command “yarn cypress cache:clear”.
    2. Update your dependencies to ensure that you’re using the latest versions of Cypress and its dependencies.
    3. Check if you have any conflicting processes running in the background that might interfere with Cypress.
    4. Restart your computer and try running the tests again.
    5. If none of the above steps resolve the issue, try reinstalling Cypress.

    If the issue persists, consider reaching out to the Cypress community for further assistance or sharing more information about your setup, such as your operating system and version of Cypress.

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  9. Asked: In:

    java.lang.NullPointerException: Cannot invoke “java.util.concurrent.TimeUnit.toMillis(long)” because “unit” is null

    Ghulam Nabi

    The error message "java.lang.NullPointerException: Cannot invoke 'java.util.concurrent.TimeUnit.toMillis(long)' because 'unit' is null" indicates that a null reference is being passed as the argument 'unit' to the method 'toMillis(long)' in the class 'java.util.concurrent.TimeUnit'. This means thatRead more

    The error message “java.lang.NullPointerException: Cannot invoke ‘java.util.concurrent.TimeUnit.toMillis(long)’ because ‘unit’ is null” indicates that a null reference is being passed as the argument ‘unit’ to the method ‘toMillis(long)’ in the class ‘java.util.concurrent.TimeUnit’. This means that the variable ‘unit’ has not been assigned a value and is therefore null, causing the exception to be thrown. To resolve this issue, you need to make sure that the variable ‘unit’ is assigned a value before it is passed as an argument to the method ‘toMillis(long)’.

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  10. Asked:

    How do I get Power Automate to loop through multiple links in order within a table on a website?

    Best Answer
    Ghulam Nabi

    To get Power Automate to loop through multiple links in order within a table on a website, you can use the "For each" action to iterate through the links in the table and perform actions on each one. Here's an outline of the steps you can follow: Extract the links from the table: Use the "Get tableRead more

    To get Power Automate to loop through multiple links in order within a table on a website, you can use the “For each” action to iterate through the links in the table and perform actions on each one. Here’s an outline of the steps you can follow:

    1. Extract the links from the table: Use the “Get table rows” action to extract the rows of the table, and then use the “Get attachment content” action to extract the content of the cell that contains the links.
    2. Use the “For each” action to iterate through the links: Use the “For each” action to loop through the links and perform the desired actions on each one.
    3. Open each link: Within the “For each” action, use the “Open URL” action to open each link.
    4. Perform actions on each page: After opening each link, use the actions available in Power Automate to perform the desired actions on the page.
    5. Return to the page with the links: After completing the actions on the current page, use the “Go back” action to return to the page with the links.
    6. Advance to the next link: After returning to the page with the links, use the “Get next item” action to move to the next link in the list, and repeat the process from step 3.

    By following these steps, you should be able to loop through multiple links in order within a table on a website using Power Automate.

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