Right now it seems variables I create can't communicate across files.
For Liquid you can pass a variable in the include
{%- assign global_var = "VALUE" -%}
{%- include 'YOUR_FILE' global_var: global_var -%}
For Shopify liquid you can do the following:
There is a work around this, you can set the global variable in the theme settings as an option config/settings_schema.json
{
"type": "text",
"id": "global_variable",
"label": "global variable",
"default": "Variable value"
},
and you can access it in the liquid files through
settings.global_variable
But the value is depending on what you enter in the theme settings.
If you need more dynamic way, you can set cart attributes through ajax like:
$.ajax({
type: 'POST',
url: '/cart/update.js',
data: { attributes: {'global_variable': "MY_VALUE"} },
dataType: 'json',
success: function(cart) {
location.reload();
}
});
And then access it any where in the theme through
cart.attributes.global_variable
But you have to update it each time the cart is empty
It seems the templates are loaded before the theme, so variables set in your layout/theme file wont be present in templates. Frustrating. However you can set them via a snippet, and include this snippet in your templates, layout, etc
In Liquid, as you want for example to determine the language and reuse this code in multiple occasions, you can create an file in the render folder.
instead of calling this using render, use include. Then it returns the assigned value. For example, create "render/current_language.liquid" :
{%- liquid
assign current_language = 'en'
if request.path contains '/nl/'
assign current_language = 'nl'
endif
%}
In a other file you can use as follows:
{%- liquid
include 'get-language'
if current_language == 'en'
else
endif
%}
As long as you use the
{% assign variable = value %}
you should be able to get the value anywhere in the file, and any file included after it has been assigned.
I believe this is the closest you can get to global variables in it.
Related
In order to hide a line of text on an empty cart I tried
{% if cart.item_count > 0 %} your html here {% endif %}
This seems to work because it does when the cart starts out empty. But I assume the page is not refreshing during add to cart (That seems to be the case if a theme using ajax add to cart functionality.)
I wonder what I need to do in order to make it work anyway?
Yes, liquid is a server-side rendered language. There is nothing you can do in liquid to update the page after an ajax call.
The only way is Javascript.
When you do the ajax call, your should be calling the cart.js or add.js or update.js endpoints, in these cases you receive an object with an array: items.
You need to check (in Javascript) if responseData.items.length>0 to see if there are items in the cart.
To make an example, this is your .liquid.
{% if cart.item_count > 0 %}
<div id="#mycart">...</div>
{% endif %}
Now in your javascript code, you might have something like
$.ajax({
type: 'POST',
url: '/add.js',
data: payload,
dataType: 'json',
success: function (data) {
if (data["item_count"] === 0) {
$("#mycart").hide();
}else{
$("#mycart").show();
}
},
error: function () {
handleError();
}
});
I'm using jQuery, but is just to give you the idea.
I have a custom checkout experience in my Shopify store that I only want to allow if all products in the cart contain the tag "test"
This is the function I currently have, which seems to only work with a single item in the cart.
function productTags() {
{%- assign tagEnabled = false -%}
return {
{%- for item in cart.items -%}
{%- if item.product.tags contains 'test' -%}
"{{ item.product.tags }}": {{ item.quantity | json }}
{%- assign tagEnabled = true -%}
{%- endif -%}
{%- endfor -%}
};
}
this line ( "{{ item.product.tags }}": {{ item.quantity | json }}) is only there for display in the console when testing this. I can remove that if necessary.
How can I expand this to look for all item tags in the cart, and only assign the tagEnabled variable to true if all of them have the same tag?
Thanks in advance!
It looks like you are trying to mix Liquid with Javascript, which can make coding confusing. I would recommend splitting your code into two parts: one where you collect your Liquid variables and assign them to Javascript variables (and I see you are using the json filter to do that already, which is awesome - that filter guarantees that your variable output will be in a Javascript-legal format), and the second part where you write your Javascript code without any Liquid brackets getting in the way. (This is especially helpful if you are using a code editor with any syntax or error highlighting)
Let me know if the following helps you get the information you need:
// The Liquid filter 'map' lets you drill into nested object properties. We can use this to get an array of tag arrays.
// The JSON Liquid filter will turn any Liquid variable into a legal Javascript variable.
const itemProductTags = {{ cart.items | map: 'product'| map: 'tags' | json }}
// Check on our variables
console.log('All product tag arrays', itemProductTags)
console.log('Results of tagCheck()', tagCheck(itemProductTags, 'test') )
function tagCheck(tagsList, targetTag){
// Checks to see if the targetTag appears in all, some or none of the tag arrays.
// tagsList will be an array of arrays
var targetInAny = false;
var targetInAll = true;
for(var i=0; i<tagsList.length; i++){
var tags = tagsList[i];
if(tags.indexOf(targetTag) != -1){
// Found the tag - this targetTag appears in at least one product-tag list
targetInAny = true;
}
else{
// Did not find the tag - this targetTag is NOT in every product-tag list
targetInAll = false;
}
}
// Returns an object specifying if we found the target in any, all or none of the lists
return { targetInAny: targetInAny, targetInAll: targetInAll, targetInNone: !targetInAny }
}
Currently in Shopify we can create a file.js.liquid which grants access to liquid functionality.
<script>
var liquidData = {
myValue: {{ product.image | asset_url }}
}
</script>
How can I use a variable in the placeme of product.image?
In example:
var myVar = 'something.jpg'
var liquidData = {
myValue: {{ myVar | asset_url }}
}
Currently this does not work for me the path it out puts is myVar as a string not as a variable. I also tried concatenation and it also reads the variable name as a string. Any ideas?
You must remember that liquid is executed before the DOM. This applies to Javascript files as well.
The liquid code is executed before the JS file is processed so when you create a JS variable and try to pass it to liquid is not possible since liquid finished it's execution long before the Javascript started to execute.
So to sum it up you can't pass anything from the Javascript ot Liquid, but the other way is possible.
So back to your question.
It should look like so:
{% assign myVar = 'something.jpg' %}
var liquidData = {
myValue: "{{ myVar | asset_url }}"
}
Playing around with Shopify theme creation, I am facing an issue while creating a loop.
I am allowing the theme administrator to choose from 1 to 4 products to display in the store. He can choose them from the customize UI of his theme.
The schema is:
{
"type": "product",
"id": "popular_product_1",
"label": "Product N°1"
},
{
"type": "product",
"id": "popular_product_2",
"label": "Product N°2"
},
{
"type": "product",
"id": "popular_product_3",
"label": "Product N°3"
},
{
"type": "product",
"id": "popular_product_4",
"label": "Product N°4"
}
Back to my liquid file, as a test, if I want the URL to the product I can do:
{{ all_products[section.settings.popular_product_1].url }}
And it's going to work. But of course, I have to repeat the same code 4 times. So I wanted to create a loop that would go over each.
But how to get the incremental number to be inserted in the above?
Of course
{{ all_products[section.settings.popular_product_i].url }}
{{ all_products[section.settings.popular_product_{{i}}].url }}
don't work.
I also tried
{% assign i = 1 %}
{% capture popular_product %}section.settings.popular_product_{{i}}{% endcapture %}
{{ all_products[popular_product].url }}
but it does not work either... as it seems that the variable popular_product is a string while it's not what it should be.
Alternate approach: Use section blocks
Have you considered using a section with blocks rather than just numbered product fields in the base settings? If you create a 'Popular Products' section and define popular-product blocks, you can add an arbitrary number of products (or can specify a maximum), then loop over them all using
{% for block in section.blocks %}
{% assign popular_product = all_products[block.settings.product] %}
<!-- Cool stuff with your popular product -->
{% endfor %}
You can read more about setting up sections & blocks in Shopify here: https://help.shopify.com/en/themes/development/sections
Now, the approach you used isn't wrong, but the code you have above has some errors in it. These can be corrected to get the right product handle to use for the all_products lookup. First:
{{ all_products[section.settings.popular_product_{{i}}].url }}
is incorrect: we never nest Liquid curly-braces inside of Liquid curly-braces. Instead, this should look something like:
{% for i in (1..4) %}
{% assign setting_name = 'popular_product_' | append: i %}
{% assign handle = section.settings[setting_name] %}
{% assign popular_product = all_products[handle] %}
<!-- Cool stuff with our popular_product object -->
{% endfor %}
Next, the capture variable will evaluate everything between the tags and store it in a string. When you use:
{% capture popular_product %}section.settings.popular_product_{{i}}{% endcapture %}
The contents of the capture is going to first substitute the value of i and then capture the resulting string, which is not a product handle! What you really want is a specific value in the section.settings object.
You should use capture to just get the popular_product_x variable you need and accessing that inside of the section.settings. For example:
{% capture field_name %}popular_product_{{i}}{% endcapture %}
{% assign popular_product = all_products[section.settings[field_name]] %}
<!-- Cool stuff with your popular product -->
Hope this helps!
Note: I personally prefer assign for simple variables like the above and use capture only for grabbing multiple lines (like a block of HTML), but either one works in this instance. A warning with capture though: remember that all whitespace is captured as well, which is often unintended with simple variables like product handles or setting names.
Hope this helps!
In my online shop I want to show some more data about each product. I have managed to do this by adding an extra nodes to settings_data.json file. Like this:
{
"current": {
...
...
"7887193478": { //Product ID
"has-badge" => true,
"show-image" => false
...
},
"7887193479": { //Product ID
"has-badge" => true,
"show-image" => true
...
},
}
}
It is working and I am getting the data and showing it successfully.
The good thing about this solution is the page load is very fast.
But the problem is when some one updates the theme setting it overrides the settings_data.json file. Is there any way that I can import this extra json settings separably into my Shopify?
Please do not advise me with Metadata App. Metadata app is very slow and I am not interested to use it.
You can create a snippet products_data.liquid (or any other name you want) that stores the information you need, that's separate from the theme settings file, and won't be overwritten. Here's an example:
{% assign "7887193478-has-badge" = true %}
{% assign "7887193478-show-image" = false %}
{% assign "7887193479-has-badge" = true %}
{% assign "7887193479-show-image" = true %}
...
Then you'll want to include it somewhere in there theme.liquid file, above where you'd be using it:
{% include "products_data" %}
The downside is that it's not as clean in terms of data entry.