What is the most effective way to utilize cookies for storing intricate data and then prompting an action to occur dynamically based on the information stored?

Question

What is the most effective way to utilize cookies for storing intricate data and then prompting an action to occur dynamically based on the information stored?

I am facing a somewhat complicated issue with my web app. I am working on making it more desktop-like by adding features such as dynamically loading information into a DIV based on previously selected items. Currently, I am using a cookie to store the data, but I am struggling to come up with a solution.

The relationships in my scenario are as follows:

SITE has_many BUILDINGS

BUILDING has_many METERS

METER

Each entity can have associated charts. To make it more generic, I have set up a "has_many" relationship for CHARTS and abstracted it accordingly.

SITE has_many CHARTS, as chartable

BUILDING has_many CHARTS, as chartable

METER has_many CHARTS, as chartable

After the user selects an item from the menu, I determine which item needs to display charts and show the relevant item's charts successfully.

My current challenge involves working with cookies to save data to different keys (or maybe Marshal objects) to reload the previously selected item's data dynamically when the page is reloaded. The ajax call requires multiple values for the "update" action to work properly. I'm uncertain whether to use direct Javascript, trigger an action, or combine different approaches to solve this problem.

Although I believe the solution might be simple, I am unable to see it at the moment. If this explanation is unclear, please feel free to ask for further clarification.

Best regards

javascript ruby-on-rails ajax cookies

Answer 1

Answer №1

Once a user selects an item from the menu, store all the necessary details to remember that selection in a cookie file. Attach a JavaScript function to the page load event to check for the presence of this cookie. If the information is found, indicating that an item should be preselected, trigger the same JavaScript function that handles user selections from the menu. If you are utilizing JQuery, you could implement something like the following code snippet to bind to the page load:

$(document).ready(function() { /* Check the cookie and execute actions */ }

Alternatively, you can also preprocess this data in your RoR code if the cookie exists to avoid making an immediate AJAX call upon page load (as this can negatively impact performance).

Answer 2

Once a user selects an item from the menu, store all the necessary details to remember that selection in a cookie file. Attach a JavaScript function to the page load event to check for the presence of this cookie. If the information is found, indicating that an item should be preselected, trigger the same JavaScript function that handles user selections from the menu. If you are utilizing JQuery, you could implement something like the following code snippet to bind to the page load:

$(document).ready(function() { /* Check the cookie and execute actions */ }

Alternatively, you can also preprocess this data in your RoR code if the cookie exists to avoid making an immediate AJAX call upon page load (as this can negatively impact performance).

Answer 3

Answer №2

This particular piece of information is too large to be kept in cookies, so it is recommended that you take one of the following actions:

Save an identifier cookie on the client-side and store the data securely on the server-side where it can be accessed by referring to the same identifier cookie along with valid authentication details.
Opt for HTML5 client-side storage options like localStorage or a locally maintained database.

Answer 4

This particular piece of information is too large to be kept in cookies, so it is recommended that you take one of the following actions:

Save an identifier cookie on the client-side and store the data securely on the server-side where it can be accessed by referring to the same identifier cookie along with valid authentication details.
Opt for HTML5 client-side storage options like localStorage or a locally maintained database.

What is the most effective way to utilize cookies for storing intricate data and then prompting an action to occur dynamically based on the information stored?

Answer №1

Answer №2

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