I have a channel (products) that has a relationship field (uniforms) in it. The uniforms channel also has a relationship field in it called fabrics. My goal is to get the name of the uniform, and a list of fabrics.
Product Template:
{exp:channel:entries channel="products" url_title="{segment_2}"}
{uniforms}
<p>
Program: {uniforms:program_name}<br>
Image: {uniforms:uniform_image}<br>
{embed="product/product-uniformData" id="{uniforms:entry_id}"}
</p>
{/uniforms}
I have embedded a template and passed on an entry_id to that template. I am using the embedded template to get the data of the fabrics.
product-uniformData Template:
{exp:channel:entries channel="uniforms" entry_id="{embed:id}"}
<strong>{program_name}</strong>
{fabrics_used}
Fabrics:{fabrics_used:product_name}<br>
{/fabrics_used}
{/exp:channel:entries}
I can't get any data in the product-uniformData template to render out on to the page.
I have tried taking out the embed:id variable, and just manually entering a known good id, but that doesn't help.
If I just render product-uniformData template on it's own, and manually input a valid embed:id, the loop renders data just fine. It is only when I call it from another template that the data won't render.
I figured it out:
{exp:channel:entries channel="products" url_title="{segment_2}"}
<strong>{product_name}</strong><br>
{uniforms}
{uniforms:program_name} -
{uniforms:fabrics_used}
{uniforms:fabrics_used:product_name}
{/uniforms:fabrics_used}<br>
{/uniforms}
{/exp:channel:entries}
It posts a wall of error messages(one for each product that does not have a uniform) for the admin:
A PHP Error was encountered
Severity: Notice
Message: Undefined index: 146
Filename: relationship_parser/Tree_builder.php
Line Number: 536
But other than that it works!
Related
For web2py there are generic views e.g. for JSON.
I could not find a sample.
When looking at the web2py manual 10.1.2 and 10.1.6, its written:
'.. define a "generic.csv" file, but one would have to specify the name of the object to be serialized ("animals" in the example)'
Looking at the generic pdf view
{{
import os
from gluon.contrib.generics import pdf_from_html
filename = '%s/%s.html' % (request.controller,request.function)
if os.path.exists(os.path.join(request.folder,'views',filename)):
html=response.render(filename)
else:
html=BODY(BEAUTIFY(response._vars))
pass
=pdf_from_html(html)
}}
and also the specified csv (Manual charpter 10.1.6):
{{
import cStringIO
stream=cStringIO.StringIO() animals.export_to_csv_file(stream)
response.headers['Content-Type']='application/vnd.ms-excel'
response.write(stream.getvalue(), escape=False)
}}
Massimo is writing: 'web2py does not provide a "generic.csv";'
He is not fully against it but..
So lets try to get it and deactivate when necessary.
The generic view should look similar to (the non working)
(well, this we better call pseudocode as it is not working):
{{
import os
from gluon.contrib.generics export export_to_csv_file(stream)
filename = '%s/%s' % (request.controller,request.function)
if os.path.exists(os.path.join(request.folder,'views',filename)):
csv=response.render(filename)
else:
csv=BODY(BEAUTIFY(response._vars))
pass
= export_to_csv_file(stream)
}}
Whats wrong?
Or is there a sample?
Is there a reson not to have a generic csv?
{{
import os
from gluon.contrib.generics export export_to_csv_file(stream)
filename = '%s/%s' % (request.controller,request.function)
if os.path.exists(os.path.join(request.folder,'views',filename)):
csv=response.render(filename)
else:
csv=BODY(BEAUTIFY(response._vars))
pass
= export_to_csv_file(stream)
}}
Adapting the generic.pdf code so literally as above would not work for CSV output, as the generic.pdf code is first executing the standard HTML template and then simply converting the generated HTML to a PDF. This approach does not make sense for CSV, as CSV requires data of a particular structure.
As stated in the documentation:
Notice that one could also define a "generic.csv" file, but one would
have to specify the name of the object to be serialized ("animals" in
the example). This is why we do not provide a "generic.csv" file.
The execution of a view is triggered by a controller action returning a dictionary. The keys of the dictionary become available as variables in the view execution environment (the entire dictionary is also available as response._vars). If you want to create a generic.csv view, you therefore need to establish some conventions about what variables are in the returned dictionary as well as the possible structure(s) of the returned data.
For example, the controller could return something like dict(data=mydata). The code in generic.csv would then access the data variable and could convert it to CSV. In that case, there would have to be some convention about the structure of data -- perhaps it could be required to be a list of dictionaries or a DAL Rows object (or optionally either one).
Another possible convention is for the controller to return something like dict(columns=mycolumns, rows=myrows), where columns is a list of column names and rows is a list of lists containing the data for each row.
The point is, there is no universal convention for what the controller might return and how that can be converted into CSV, so you first need to decide on some conventions and then write generic.csv accordingly.
For example, here is a very simple generic.csv that would work only if the controller returns dict(rows=myrows), where myrows is a DAL Rows object:
{{
import cStringIO
stream=cStringIO.StringIO() rows.export_to_csv_file(stream)
response.headers['Content-Type']='application/vnd.ms-excel'
response.write(stream.getvalue(), escape=False)
}}
I tried:
# Sample from Web2Py manual 10.1.1 Page 464
def count():
session.counter = (session.counter or 0) + 1
return dict(counter=session.counter, now = request.now)
#and my own creation from a SQL table (if possible used for json and csv):
def csv_rt_bat_c_x():
battdat = db().select(db.csv_rt_bat_c.rec_time, db.csv_rt_bat_c.cellnr,
db.csv_rt_bat_c.volt_act, db.csv_rt_bat_c.id).as_list()
return dict(battdat=battdat)
Bot times I get an error when trying csv. It works for /default/count.json but not for /default/count.csv
I suppose the requirement:
dict(rows=myrows)
"where myrows is a DAL Rows object" is not met.
Here's what I want to do:
{% for disaster in disasters %}
{{disaster.name}}
When I try to open the HTML page I get:
Error during template rendering
With exception value as:
Exception Value:
Reverse for '{{disaster.link}}' not found. '{{disaster.link}}' is not a valid view function or pattern name.
How can I do the same task with or without jinja logic?
Have you tried removing the curly braces around disaster.link? I've only worked with Jinja once, but that stood out to me.
I'm creating a blog just to dump my notes in. I love how far I can go with site.tags and site.categories. All I really need now is the ability to have another filter option. Something li site.sublog it would help me create exactly what I need
So here's a post
---
layout: post
title: "Angular.js With Codeschool:part five"
date: 2015-05-14 07:57:01 +0100
category: [Angularjs-codeschool, basics]
tags: [angular with codeschool]
sublog: [web]
---
Basically I want to write notes on everything I am interested in: web, general tech, history ... and sort of create sub blogs
There are ways around it but now that I am here I just wanted to know if such a thing was possible
Categories and tags are treated specially by Jekyll, so you won't find that other front matter entries from a post will be collected into a site-wide variable like site.categories and site.tags are.
The Jekyll documentation has a tutorial on retrieving items based on front matter properties, which shows how to iterate over an entire collection and do some per-item processing based on a front matter variable's value.
You could iterate over your collection, inspecting the sublog values of each item and concat-ing them to a list of all known sublog values (perhaps removing duplicates using uniq afterwards, and optionally sort-ing them before further processing).
This would enable you to create a list of all sub blogs, and for each sub blog, create a list of posts within it (which is presumably your end goal).
You can store Sitewide information + configuration settings in _config.yml.
Your example shows Page specific information in the YAML front matter!
Read the Jekyll Documentation, please.
I successfully use a single argument in polymer to call a function (in Dart) -eg
{{arg1|myfunc}}
I can't get two arguments to work. I have tried several combinations, including the example shown on the polymer expressions page:
{{ {arg1,arg2} | myfunc}
and
String myfunc(String arg1, String arg2){
but my dart project won't even 'compile' (I get a 404 not found) with that.
What is the correct syntax please? Thanks, Steve
Thanks Anthony,
I just tried the obvious! Here is the syntax:
{{ myfunc(arg1,arg2) }}
Steve
I have a CI and jQuery based project. I've got a site searching my db. It consists of a jQueryUI accordion. One section contains input fields for an advanced search and the other section is used to display a html table with results.
The search parameters from the first section are sent to the server using ajax post. This is crunched by the server and either a html styled error message or a html table with results (and later some other stuff such as how many results found, how much time consumed etc.) is returned.
Back on the client jQuery must be able to distinguish between the two. Best would be to be able to transmit another variable 'search_success'. If 'search_success' is false, the error is prepended to section one above the input fields. Otherwise the html block is displayed in section two and jQuery opens section 2.
Right now I'm returning plain html with a 0 or 1 prepended. This first char is chopped off by jQuery and used to distinguish between the two possible results. This is kind of ugly.
After reading this post about sending array using json I thought about addressing this problem in json.
I intended to build something like
echo json_encode(array('search_success' => $search_success, 'html' => $html));
This would alow for nice structuring of the data. Problem now is, my 'html' is not a simple php variable but a view:
<?php
$template = array('table_open' => '<table id="table" data-url="'.base_url().'">');
$this->table->set_template($template);
$this->table->set_heading($table_header);
echo $this->table->generate($table);
?>
This view could also get a lot more complicated. Of course I could abandon the CI MVC and store the whole html in a php string which I could transform to json with the above code. However, this would defeat the purpose of storing the whole html part in a view.
Is there a way to wrap my whole view in json without relinquishing my view architecture?
Or what approach would be more suitable to the problem?
Thanks, singultus
To bring this topic to an end, the answer is simple:
$json['html'] = $this->load->view('myfile', '', true); // 3. param 'true'!
$json['other_stuff'] = $other stuff;
echo json_encode($json);
See here at the very end. This approach allows for a nicely structured response to the server.
All credit to #koala_dev!