I’m working on an email template for Mailjet written in MJML that uses an array value provided through Vars to generate a list of items the sender wants to receive from the mail recipient. All values in the array are plain text values.
The data passed to the API request looks like this:
{
"FromEmail":"sender#email.com",
"FromName":"Chris Crumble",
"Subject":"Data Request",
"MJ-TemplateID":"200000",
"MJ-TemplateLanguage":true,
"Recipients":[
{
"Email":"recipient#email.com",
"Name":"Hans Henson"
}
],
"Vars":{
"mailTitle":"Data Request",
"userName":"Chris Crumble",
"imageUrl":"http://my.host.com/image.jpg",
"userBirthDate":"1.3.1982",
"recipientName":"Hans Henson",
"uploadUrl":"https://my.upload.com/",
"authVideoUrl":"https://my.authvideo.com",
"records":["Document A","Document B"],
"authPhone":"113777840097"
}
}
The template uses var:records like this:
...
</mj-text>
<mj-raw> {% if var:records:false %} </mj-raw>
<mj-text>
<p>
I, <strong>{{var:userName}}, born on {{var:userBirthDate}}</strong> am asking you to provide the following documents:
</p>
</mj-text>
<mj-raw> {% for item in var:records %} </mj-raw>
<mj-text>
{{item}}
</mj-text>
<mj-raw> {% endfor %} </mj-raw>
<mj-raw> {% else %} </mj-raw>
<mj-text>
<p>
I, <strong>{{var:userName}}, born on {{var:userBirthDate}}</strong>, am asking you to provide all my existing documents.
</p>
</mj-text>
<mj-raw> {% endif %} </mj-raw>
<mj-text>
...
As long as var:records isn’t set in the data sent with the request, the mail is sent as expected. As soon as an (not empty) array value is provided with the request, the mail is blocked by Mailjet on sending without giving any further information on the reason.
No idea how to get this working.
UPDATE:
Thanks to Zhivko’s hint to the error reporting mechanism provided by Mailjet I was able to gain a little more insight into the problem.
The template produces the following error:
expression parsing error ## Unknown identifier: var:records:false ## near ## var:records:false ##
This still doesn’t make any sense to me as the line mentioned is an if condition with a default value of false defined for the case that no value for var:records is provided with the api request.
Also the template only produces this error when the value is explicitely set in Vars and is not empty.
My tests so far make me guess that it may have to do with the provided value being an array value as the line doesn’t cause any problems if the value is plain string.
I had the same problem and after asking the MJML team on their Slack I add an answer. Just use the defined() method :
Example :
{% if defined(var:employees) %}
My employees :
<ul>
{% for employee in var:employees %}
<li>{{employee.firstname}} {{employee.lastname}}</li>
{% endfor %}
</ul>
{% endif %}
This method is correct and a core maintainer of MJML just says :
It's not publicly documented yet
PS : Their Slack is a good place to ask this kind of question and I had a response in minutes. (mjml.slack.com)
The message is probably blocked due to an error in the template language. To receive details about the error, enable the error reporting mechanism. If you have troubles debugging the error message, open a support ticket with Mailjet for in depth investigation for the specific template.
As far as I know, Mailjet doesn't allow arrays as a personalized var.
DataType: the type of data that is being stored (this can be either a
str, int, float or bool)
https://dev.mailjet.com/guides/#manage-contacts
Solution:
<% if(typeof bar !== 'undefined') { %>
variable 'bar' is defined in payload:
<b><%= bar %></b>
<% } else {%>
variable 'bar' is not defined in payload
<% }%>
Related
Hello i have implemented a simple search form and search view to show search result. Now i want to paginate them. But there is a problem with the page in the url. My search url looks like ../search?q=Bla
Now if i try to add pagination like: ../search?q=Bla?page=2 (at least thats how i understand it would work) it takes the whole string after q= to my database filter. I took a look at how stackoverflow handles searching and pagination and found out using '&' here is the view code:
def search(request):
# get query search parameters
page = request.GET.get('page', 1)
query = request.GET.get('q', '')
# query none or empty
if query is None or query == '':
return redirect('home')
# query valid
else:
# icontains make sure to ignore character sensitivity
post_list = Post.objects.filter(title__icontains=query)
paginator = Paginator(post_list, 5)
try:
posts_l = paginator.page(page)
except PageNotAnInteger:
posts_l = paginator.page(1)
except EmptyPage:
posts_l = paginator.page(paginator.num_pages)
return render(request, 'search.html', {'post_list': posts_l, 'query': query})
and here the HTML Snippet:
{% if post_list.paginator.num_pages > 1 %}
<div class="pagination">
<span class="step-links mb-5 mx-auto">
{% if post_list.has_previous %}
<a class="mr-3" href="?page={{ post_list.previous_page_number }}&q={{ query }}">zurück</a>
{% endif %}
<span>Seite {{ post_list.number }} von {{ post_list.paginator.num_pages }}</span>
{% if post_list.has_next %}
<a class="ml-3" href="?page={{ post_list.next_page_number }}&q={{ query }}">nächste</a>
{% endif %}
</span>
</div>
{% endif %}
So now the url is build like search?q=Test for the first page. And for the other pages (which suprisingly works) is search?page=2&q=Test. Now im happy it works but i dont quite how just adding &q={{ query }} solved my problem. Is this some kind of universal RFC? I dont quite understand since i was just checking out how this side does it. implemented it and works?
A query string [wiki] is the part after the question mark (?) of a URL. It is a string that consists out of a sequence of key-value pairs separated by an ampersand (&). The key and the value are separated by the equals sign (=). Both the key and the value are percent-encoded [wiki]. So as you found out:
page=2&q=Test
is a querystring that contains two key-value pairs: page maps to 2 and q to test.
The code is however not entirely "safe". If the query itself contains an ampersand &, etc. then this can result in an incorrect query. You should make use of the |urlencode template filter [Django-doc] to percentage encode the value:
<a class="ml-3" href="?page={{ post_list.next_page_number }}&q={{ query|urlencode }}">nächste</a>
I am trying to place a golang array (also slice, struct, etc.) to HTML so I can use array element in HTML Element content when returning HTML from golang gin web framework. Another problem is how to render these data with loop? Such as Flask jinja
works in this way.
{% block body %}
<ul>
{% for user in users %}
<li>{{ user.username }}</li>
{% endfor %}
</ul>
Usually you have a folder with template files so first you need to tell the gin where these templates are located:
router := gin.Default()
router.LoadHTMLGlob("templates/*")
Then in handler function you simply pass template name the data to HTML function like this:
func (s *Server) renderIndex(c *gin.Context) {
c.HTML(http.StatusOK, "index.tmpl", []string{"a", "b", "c"})
}
In index.tmpl you can the loop the data like this:
{{range .}}
{{.}}
{{end}}
The . is always the current context so in first line . is the input data and inside the range loop . is the current element.
Template example: https://play.golang.org/p/4_IPwD3Y84D
Documentation about templating: https://golang.org/pkg/text/template/
Great examples: https://astaxie.gitbooks.io/build-web-application-with-golang/en/07.4.html
Started learning django about a week ago and ran into a wall. Would really appreciate any enlightenment...
models.py
class data(models.Model):
course = models.CharField(max_length = 250)
def __str__(self):
return self.course
html
Converted the objects in models.course to schlist
<link rel="stylesheet" type="text/css" href="{% static '/chosen/chosen.css' %}" />
<form action={% views.process %} method="GET">
<div>
<h4 style="font-family:verdana;">First Course: </h4>
<select data-placeholder="Course" style="width:350px;" class="chosen-select" tabindex="7">
<option value=""></option>
{% for item in schlist %}
<option> {{ item }} </option>
{% endfor %}
</select>
</div>
</br>
<div>
<h4 style="font-family:verdana;">Second Course:</h4>
<select data-placeholder="Course" style="width:350px;" class="chosen-select" tabindex="7">
<option value=""></option>
{% for item in schlist %}
<option> {{ item }} </option>
{% endfor %}
</select>
</div>
</br>
<input type="submit" value="Compare!" />
</form>
urls.py (having my doubts if this works..)
urlpatterns = [
url(r'^(\d+)/(\d+)$',views.process, name = 'process'),
]
view.py
def process(request,q1 ,q2):
obj1= get_object_or_404(Schdata, course = q1)
obj2= get_object_or_404(Schdata, course = q2)
........
Was wondering if it is possible for the form action to direct the action to
(1) view.py or (2) url.py (and eventually to a view.py) with 2 arguments selected?
If so how should the form action be? {{view ?}} or {{url ?}}. Am I missing out the definition of my arguments in my HTML?
Directing to views.py:
User input is CharField, could use get_object_or_404 to get the model pk. However when defining my urls.py I would get a Noreverse error as my url arguments is the primary key.
Directing to urls.py:
Url arguments is primary key. From the way I see it, I need to magically convert my User input Charfield to a pk before passing it to urls.py
Is there a (or) function for get() in django? E.g get_object_or_404(pk = q1 or course = q1)?
Would really appreciate any advice. Been staring at this for hours.
You are trying to use the reverse resolution of urls in Django.
In your html file correct form action url to the following and method should be POST:
<form action={% url 'process' %} method="POST">
In case you are trying to pass parameters along then use this:
<form action={% url 'process' request.user.id 4 %} method="POST">
Reference:
https://docs.djangoproject.com/en/1.10/topics/http/urls/
Yes i'm late but it can help others for better understanding how Django processes the request.
Django 3.0 pattern
How Django processes the request
Basic :
First Django check the matching URL.
If URL is matched then calling the defined view to process the request. (Success)
If URL not matched/found the Django invokes error Page Not Found
In detail reading :
Official Django Documentations How Django processes a request
These are your URL patterns :
urlpatterns = [ path('profile/edit/<int:pk>/',views.editprofile, name='editprofile'),]
Third argument in urlpatterns is for if you want to change the url pattern from current to this :
urlpatterns = [ url('profile/edit/user/id/<int:pk>',views.editprofile, name = 'editprofile'),]
You don't need to redefine url pattern in all Templates where you using url name.
For Example :
This is my template profile.html where i used the url name instead of hard coded url.
<a class="item" href="{% url 'editprofile' user.id %}" >Edit profile </a>
Solution of your problem :
.html
Only use url name instead of hard coded url in your templates and pass arguments.
<form action={% process no_of_arguments %} method="POST">
views.py
Here you can process your request
def process(request,no_of_arguments):
Become good django developer
You can also use Django ModelForms for your model.
Using model forms or simple form you can do multiple things
Modular approach
Write server side validation in related form instead of doing in views.py
Readable code - Clean code
I want to make my GAE application webapp2 compatible.
This code worked great with webapp:
insert = '<p><font color="red"><b>some text</b></font></p>'
template_values = {
'insert': insert,
...
}
path = ...
self.response.out.write(template.render(path,template_values))
The content of the variable insert was just put into the web page output by webapp. Now the content of the variable is "analyzed" by webapp2 and the content is changed when it is inserted in the webpage.
webapp2 inserts this:
<p><font color="red"><b>some text</b></font></p>
How can I go back to the old behavior?
Thanks for any help.
Have a look at
safe : https://docs.djangoproject.com/en/dev/ref/templates/builtins/#safe &
autoescape : https://docs.djangoproject.com/en/dev/ref/templates/builtins/#autoescape.
Eg:
{{ insertHTML|safe }} OR
{% autoescape off %}{{ inserHTML }}{% endautoescape %}
I am trying to create a dynamic hyperlink that depends on a value passed from a function:
{% for item in field_list %}
<a href={% url index_view %}{{ item }}/> {{ item }} </a> <br>
{% endfor %}
The problem is that one of the items in field_list is "Hockey Player". The link for some reason is dropping everything after the space, so it creates the hyperlink on the entire "Hockey Player", but the address is
http://126.0.0.1:8000/Hockey
How can I get it to go to
http://126.0.0.1:8000/Hockey Player/
instead?
Use the urlencode filter.
{{ item|urlencode }}
But why are you taking the name? You should be passing the appropriate view and PK or slug to url which will create a suitable URL on its own.
Since spaces are illegal in URLs,
http://126.0.0.1:8000/Hockey Player/
is unacceptable. The urlencode filter will simply replace the space with %20, which is ugly/inelegant, even if it does kind of get the job done. A much better solution is to use a "slug" field on your model that represents a cleaned-up version of the title field (I'll assume it's called the title field). You want to end up with a clean URL like:
http://126.0.0.1:8000/hockey_player/
To make that happen, use something like this in your model:
class Player(models.Model):
title = models.CharField(max_length=60)
slug = models.SlugField()
...
If you want the slug field to be pre-populated in the admin, use something like this in your admin.py:
class PlayerAdmin(admin.ModelAdmin):
prepopulated_fields = {"slug": ("title",)}
....
admin.site.register(Player,PlayerAdmin)
Now when you enter a new Player in the admin, if you type "Hockey Player" for the Title, the Slug field will become "hockey_player" automatically.
In the template you would then use:
{% for item in field_list %}
<a href={% url index_view %}{{ item.slug }}/> {{ item }} </a> <br>
{% endfor %}
There is this builtin filter .
http://docs.djangoproject.com/en/dev/ref/templates/builtins/#urlencode
Although you should be using one of these
http://docs.djangoproject.com/en/dev/ref/models/fields/#slugfield