I'm displaying a page with around 60 avatars using django-avatar and a query is made for each one of them.
I cannot use User.objects.select_related('avatar') because there is no link between my user and his avatar. So how do I optimize this?
EDIT:
Avatars are retrieved in the template using {% avatar user %} (this is a template tag specific to github.com/jezdez/django-avatar, which seems to be the most used application for handling user avatars. I'm asking this question because some people certainly already had to face the issue of displaying many avatars using this application and I would like to know their solution).
Using the cache (like memcached) is the answer.
Related
So I am trying to build something for my store but a few things are somewhat unclear.
If I need to save some user settings do I need my own backend just
for that app specifically? For simplicity sake, I want build an app
to save and display a custom message in cart-template.liquid.To
achieve that, I think my app should make a request to my backend (let
say, on heroku) and save it in some db that app is using?
How do I retrieve that data in cart-template.liquid? I guess I
build a snippet that calls a public endpoint of my backend that
returns that saved message using fetch() or maybe axios.get and
embed it using {% render 'fetch-custom-message-snippet' %} ?
Say I ask for user input, ie. "Engraved message" and the form is in cart-template.liquid,
of course. The following snippet is used:
<p class="line-item-property__field">
<label for="engraved-message">Engraved message</label>
<input id="engraved-message" type="text" name="properties[Engraved message]">
</p>
How do I make sure that bit of information is captured and passed to me? I guess I want to see it somewhere in the order details.
If I need to save some user settings do I need my own backend just for that app specifically? For simplicity sake, I want build an app to save and display a custom message in cart-template.liquid.To achieve that, I think my app should make a request to my backend (let say, on heroku) and save it in some db that app is using?
Yes, you need your own backend. Your application alone is responsible for storing its own information (there are some exceptions like a special order field which I show you below) - that typically infers a database that back ups your service and holds your data. Please check out this thread as you can find lots of valuable information there.
Regarding cart-template.liquid I'd suggest taking a look at the official "Shopify Developers" documentation. All information you're allowed to display and request are neatly explained and ordered there.
How do I retrieve that data in cart-template.liquid? I guess I build a snippet that calls a public endpoint of my backend that returns that saved message using fetch() or maybe axios.get and embed it using {% render 'fetch-custom-message-snippet' %} ?
Once again there are good guides out there. I suggest taking a look at this blog post which goes into in-depth on this topic. Shopify's documentation about the Liquid template language is also highly advised to be read.
How do you retrieve that data? According to this specific example any input will be supplied to your order page in the Shopify admin. For example:
<label for="CartNote">Special instructions</label>
<textarea name="note" id="CartNote">{{ cart.note }}</textarea>
*taken from https://shopify.github.io/liquid-code-examples/example/cart-notes*; shows a Special instruction label and textarea for users to submit details about the oder - you will get this data on, as mentioned, the order page in the Shopify admin.
Say I ask for user input, ie. "Engraved message" and the form is in
cart-template.liquid, of course. The following snippet is used:
[...] How do I make sure that bit of information is captured and passed to me? I guess I want to see it somewhere in the order details.
see above
//EDIT:
To prevent any confusion: It seems like you want to develop a custom app just for personal usage and not to publish it in the Shopify App Store - in this case you most often than not don't need an external database; e.g. the example you provided with a simple order request which is easily doable through Shopify's examples.
For your specific case this code snippet (I modified your original example to fit the case - it's not a full cart-template.liquid obviously; in this case the file is called cart.liquid):
<label for="engraved-message">Engraved message</label>
<textarea name="message" id="engraved-message">{{ cart.note }}</textarea>
//EDIT 2:
The link - shared by another user in this thread, namely #Simas Butavičius - is actually kind of useful if you have problems with the customization process in general, i.e. if you want to revise some basic concepts or want to check how to implement the code snippet from above in the whole structure of your website I'd advise to skim through this site.
Needless to say, there are hundreds of good tutorials, questions regarding the same "issue" or other resources in general.
I suggest for further reading purposes to check out some of these links and guides (some may be mentioned above):
https://shopify.github.io/liquid-code-examples/example/cart-notes
https://shopify.github.io/liquid-code-examples/example/checkout-form (! very good in-depth example)
https://www.christhefreelancer.com/shopify-liquid-guide/
https://shopify.dev/docs/themes/theme-templates/cart-liquid
https://shopify.dev/docs/themes/liquid/reference
https://www.shopify.com/partners/shopify-cheat-sheet (! helpful cheatsheet)
https://community.shopify.com/c/Shopify-Design/Cart-Use-cart-attributes-to-collect-more-information/td-p/613718
https://community.shopify.com/c/Shopify-APIs-SDKs/Add-custom-input-fields-to-cart/td-p/154710
https://community.shopify.com/c/Shopify-Design/Product-pages-Get-customization-information-for-products/td-p/616503
Here is the tutorial specifically for creating custom shopify input field for getting engraving information: https://community.shopify.com/c/Shopify-Design/Product-pages-Get-customization-information-for-products/td-p/616503
So (for example) if a user selects their gender and pant size while searching on Shopify store, could those selections be saved and be in place when they visit again?
I'm open to switching to a new Shopify search app that would support this feature.
There a few approaches that you can achieve this.
Using cookies
You can save their choices as cookies and refer to them once they search modifying the search URL before redirecting or appending hidden files in the form so that they submit them as well.
Creating a custom app
You can create a custom app with only one purpose to save the information to the customer metafields or tags.
Once you have this information you will be able to use the same logic as the cookie one but instead of relying on a cookie you will have access to the metafields directly.
App
I don't think that there is an App that meets these criteria, but you can look it up. Yet it may be possible to hack up the Apps in a such way that you may be able to pass this information.
I'm experimenting with the Wikipedia API and was trying to get the full urls for all images on a particular page, in this example Google's main page (http://en.wikipedia.org/wiki/Google).
I found the page id through the use of another API and then attempted to use this information in the following API to get the full urls of all images on that page:
http://en.wikipedia.org/w/api.php?action=query&pageids=1092923&generator=images&prop=imageinfo&iiprop=url|dimensions|mime&format=xml
I get some of the page images from this but cannot understand why I am not getting all - specifically the logo which is what I was most interested in. Apologies I am aware that there are similar questions which have been asked but I was not able to find one which would assist me here.
The API does not give you all results at once, it defaults to 10 results. You see in the beginning answer that you have a value for the parameter gimcontinue. If you use it like this you get more images: http://en.wikipedia.org/w/api.php?action=query&pageids=1092923&generator=images&prop=imageinfo&iiprop=url|dimensions|mime&format=xml&gimcontinue=1092923|Google_bike.jpg
Alternatively, you can ask for more images at once using gimlimit like this: http://en.wikipedia.org/w/api.php?action=query&pageids=1092923&generator=images&prop=imageinfo&iiprop=url|dimensions|mime&format=xml&gimlimit=500
I am developing an analytics product similar to Google Analytics and want to offer an integration for our Shopify users.
I would need to do just two things:
1) Insert our JavaScript snippet into the body of all the shop's pages
2) Insert a second conversion snippet into the body of only the "thank you" page after a purchase to record the sale, passing back the order total and order number
Could you point me in the right direction?
The ScriptTag endpoint looks optimal except that it doesn't seem to provide any way to differentiate between the "thank you" page and other pages, or to pass the order details from the "thank you" page into the script.
It seems like I either need an endpoint that can inject arbitrary code into all pages, or one which lets me alter the theme layout file to add code before the </body> tag.
If I can do that much, it looks like I might be able to use a conditional in the templating language to only show the conversion code if the URL matches the "thank you" page URL, and use {{ total_price }} and {{ order_number }} in that code.
Does the uninstall webhook allow me to make changes before the rights for the app are revoked? It seems like I would need a way to clean up at uninstall to remove my code from the theme, if I'm allowed to edit the layout file.
itThere are two ways you can go about this:
ScriptTags: You're already aware of this method. It's true that the script is loaded into each and every page, but you can look at document.url in your js to figure out which page you're on and conditionally execute code based on that.
Scripts inserted this way are executed during the 'onLoad' event. At that time you have access to the DOM and can do basically whatever you want with the page.
Snippets: Using the Assets endpoint you can make arbitrary changes to the user's theme. Be careful with this power! The recommended way to make complex changes to a page is to create a custom snippet in the theme with your additions and then tell the user to insert an include tag into their code where it needs to appear. This reduces clutter in the main theme files.
I'd recommend using ScriptTags wherever possible. As mentioned below, they don't need cleaning up and remove the need for user interaction when setting up the app.
--
As for the uninstall webhook: It is fired after the app has been uninstalled from the shop, so you no longer have access. It's designed to be used to trigger cleanup on your end (remove db entries, etc.). Note that ScriptTags and Webhook subscriptions are automatically cleaned up, but any changes you've made to the theme aren't
You ask a lot of questions in one posting.
For your #1 and #2 read:
http://api.shopify.com/scripttag.html
Secondly, for your app install/uninstall read:
http://api.shopify.com/webhook.html
Pay attention to the part about app/uninstalled since you're interested in that.
As for knowing when someone installs your App, that is really up to you to figure out. Should not be too hard since you probably read about how to make and App in the first place. Shopify provides lots of boiler plate code on github that can show you almost everything you asked here.
It is a question about django that has found absolutely no answer for me.
Let's suppose I have a site where I display two blocks in the sidebar :
A list of the last users who've logged in
A list of the last published blog articles
Let's say that these blocks are to be displayed on 80% of the website urls and presented using template files.
The data for these blocks is generated by code (obviously), bt not by url views.
Well, how to do such a thing ?
You might want to take a look at custom template tags.
Edit: more specifically, look at inclusion template tags.