https://angularfirebase.com/lessons/autocomplete-search-with-angular4-and-firebase/

Learn how to grab async data from firebase and update the UI after each keypress.
2024-02-04T08:34:25.531Z
nova-2
2-general-nova
2024-01-09.29447
30089e05-99d1-4376-b32e-c263170674af
9db36ca2-2b7e-4e2b-a3d0-359daf539aa9
804f053b457f13f6716daf573d35c62de96152aaeea3b824777b93de436c388b
67875a7f-c9c4-48a0-aa55-5bdb8a91c34a
deprecated
In this episode, we're going to build an autocomplete feature using Angular 4 and Firebase.
Users will be able to type into a search field, and the results will automatically be updated in the field below.
In order to demonstrate this a feature we have the real time database populated with a series of movies.
The search function will match string patterns to the title in the a database similar to the SQL like operator.
Let's get the app started by building the service.
A the service is very simple.
All we needed to do is return a Firebase list observable a that we can pass a query to.
And this query can take either just a regular string object or it can take a subject it from rxjs.
Passing in the subject allows you to call next us on the underlying subject, which is a lot easier, more intuitive way to filter that query.
It.
Now we can jump into the component.
The first thing we do is build an input field where the user can enter their search a new.
Then we'll attach a function to the key down event, which will run every time the user presses a key in this field.
It.
From there, we will populate an array of movies and then loop through them using the ng 4 directive.
A, and as a final touch, we'll add the n g f directive to a div that will only be displayed if the movies array is empty.
A in the component TypeScript, we start by injecting the service that we built earlier, and we also import the RxJS subject class.
A now we declare a couple of variables.
The movies variable is gonna hold the Firebase list observable.
A the start at and end at variables are both gonna hold subjects, and it's important that these are each their own individual subject.
During the on init life cycle hook, we'll trigger the get movies function from the service, and we'll pass it the 2 subjects what we declared earlier.
Then we subscribe to it, and the value that it emits will be our movies variable.
A now we can define the search function.
We start by using the event variable to get the actual value that the user inputted into the form, a and then we use that value to set the 2 subjects.
For the end at subject, we add a special Unicode character to the end of the string.
A this basically tells Firebase to match the first pattern and then anything that comes after that first pattern as well.
A again, it's very similar to the SQL like operator.
So at this point, we actually have a working autocomplete feature, it, but there's a few optimizations that we can make.
Currently, we're hitting the database after every key down event, which is very inefficient.
It.
We can limit this by keeping track of the time between key press events and only running it after a certain amount of time is expired.
It.
In this case, we'll set it to 200 milliseconds between key presses.
A second issue we're running into is we're getting a Fire a database warning that our title attribute is not indexed in the database.
We can fix this by going into the Firebase console it and then adding the attributes that we want indexed at any point in the database.
In this case, we'll tell Firebase to index the title a tribute on our movies collection.
A a that's it for this episode.
If you found the video helpful, please like and subscribe.
And if you wanna support the channel, consider becoming a pro a subscriber at angularfirebase.com.
For just a few bucks a month, you'll get access to exclusive content as well as free 1 on 1 project consulting.
A thanks for watching, and I'll see you next time.

Speaker 0: In this episode, we're going to build an autocomplete feature using Angular 4 and Firebase. Users will be able to type into a search field, and the results will automatically be updated in the field below. In order to demonstrate this a feature we have the real time database populated with a series of movies. The search function will match string patterns to the title in the a database similar to the SQL like operator. Let's get the app started by building the service.

A the service is very simple. All we needed to do is return a Firebase list observable a that we can pass a query to. And this query can take either just a regular string object or it can take a subject it from rxjs. Passing in the subject allows you to call next us on the underlying subject, which is a lot easier, more intuitive way to filter that query. It.

Now we can jump into the component. The first thing we do is build an input field where the user can enter their search a new. Then we'll attach a function to the key down event, which will run every time the user presses a key in this field. It. From there, we will populate an array of movies and then loop through them using the ng 4 directive.

A, and as a final touch, we'll add the n g f directive to a div that will only be displayed if the movies array is empty. A in the component TypeScript, we start by injecting the service that we built earlier, and we also import the RxJS subject class. A now we declare a couple of variables. The movies variable is gonna hold the Firebase list observable. A the start at and end at variables are both gonna hold subjects, and it's important that these are each their own individual subject.

During the on init life cycle hook, we'll trigger the get movies function from the service, and we'll pass it the 2 subjects what we declared earlier. Then we subscribe to it, and the value that it emits will be our movies variable. A now we can define the search function. We start by using the event variable to get the actual value that the user inputted into the form, a and then we use that value to set the 2 subjects. For the end at subject, we add a special Unicode character to the end of the string.

A this basically tells Firebase to match the first pattern and then anything that comes after that first pattern as well. A again, it's very similar to the SQL like operator. So at this point, we actually have a working autocomplete feature, it, but there's a few optimizations that we can make. Currently, we're hitting the database after every key down event, which is very inefficient. It.

We can limit this by keeping track of the time between key press events and only running it after a certain amount of time is expired. It. In this case, we'll set it to 200 milliseconds between key presses. A second issue we're running into is we're getting a Fire a database warning that our title attribute is not indexed in the database. We can fix this by going into the Firebase console it and then adding the attributes that we want indexed at any point in the database.

In this case, we'll tell Firebase to index the title a tribute on our movies collection. A a that's it for this episode. If you found the video helpful, please like and subscribe. And if you wanna support the channel, consider becoming a pro a subscriber at angularfirebase.com. For just a few bucks a month, you'll get access to exclusive content as well as free 1 on 1 project consulting.

A thanks for watching, and I'll see you next time.
In this episode, we're going to build an autocomplete feature using Angular 4 and Firebase. Users will be able to type into a search field, and the results will automatically be updated in the field below.
In order to demonstrate this a feature we have the real time database populated with a series of movies. The search function will match string patterns to the title in the a database similar to the SQL like operator. Let's get the app started by building the service. A the service is very simple.
databases
programming
data management
All we needed to do is return a Firebase list observable a that we can pass a query to. And this query can take either just a regular string object or it can take a subject it from rxjs. Passing in the subject allows you to call next us on the underlying subject, which is a lot easier, more intuitive way to filter that query. It. Now we can jump into the component. The first thing we do is build an input field where the user can enter their search a new. Then we'll attach a function to the key down event, which will run every time the user presses a key in this field. It. From there, we will populate an array of movies and then loop through them using the ng 4 directive. A, and as a final touch, we'll add the n g f directive to a div that will only be displayed if the movies array is empty.
A in the component TypeScript, we start by injecting the service that we built earlier, and we also import the RxJS subject class. A now we declare a couple of variables. The movies variable is gonna hold the Firebase list observable. A the start at and end at variables are both gonna hold subjects, and it's important that these are each their own individual subject. During the on init life cycle hook, we'll trigger the get movies function from the service, and we'll pass it the 2 subjects what we declared earlier.
programming
film
Then we subscribe to it, and the value that it emits will be our movies variable. A now we can define the search function. We start by using the event variable to get the actual value that the user inputted into the form, a and then we use that value to set the 2 subjects. For the end at subject, we add a special Unicode character to the end of the string. A this basically tells Firebase to match the first pattern and then anything that comes after that first pattern as well.
A again, it's very similar to the SQL like operator. So at this point, we actually have a working autocomplete feature, it, but there's a few optimizations that we can make. Currently, we're hitting the database after every key down event, which is very inefficient. It. We can limit this by keeping track of the time between key press events and only running it after a certain amount of time is expired.
databases
data management
It. In this case, we'll set it to 200 milliseconds between key presses. A second issue we're running into is we're getting a Fire a database warning that our title attribute is not indexed in the database. We can fix this by going into the Firebase console it and then adding the attributes that we want indexed at any point in the database.
In this case, we'll tell Firebase to index the title a tribute on our movies collection. A a that's it for this episode. If you found the video helpful, please like and subscribe. And if you wanna support the channel, consider becoming a pro a subscriber at angularfirebase.com. For just a few bucks a month, you'll get access to exclusive content as well as free 1 on 1 project consulting. A thanks for watching, and I'll see you next time.
youtube
seasons
podcasts
In this episode, we're going to build an autocomplete feature using Angular 4 and Firebase. Users will be able to type into a search field, and the results will automatically be updated in the field below. In order to demonstrate this a feature we have the real time database populated with a series of movies. The search function will match string patterns to the title in the a database similar to the SQL like operator. Let's get the app started by building the service. A the service is very simple. All we needed to do is return a Firebase list observable a that we can pass a query to. And this query can take either just a regular string object or it can take a subject it from rxjs. Passing in the subject allows you to call next us on the underlying subject, which is a lot easier, more intuitive way to filter that query. It. Now we can jump into the component. The first thing we do is build an input field where the user can enter their search a new. Then we'll attach a function to the key down event, which will run every time the user presses a key in this field. It. From there, we will populate an array of movies and then loop through them using the ng 4 directive. A, and as a final touch, we'll add the n g f directive to a div that will only be displayed if the movies array is empty. A in the component TypeScript, we start by injecting the service that we built earlier, and we also import the RxJS subject class. A now we declare a couple of variables. The movies variable is gonna hold the Firebase list observable. A the start at and end at variables are both gonna hold subjects, and it's important that these are each their own individual subject. During the on init life cycle hook, we'll trigger the get movies function from the service, and we'll pass it the 2 subjects what we declared earlier. Then we subscribe to it, and the value that it emits will be our movies variable. A now we can define the search function. We start by using the event variable to get the actual value that the user inputted into the form, a and then we use that value to set the 2 subjects. For the end at subject, we add a special Unicode character to the end of the string. A this basically tells Firebase to match the first pattern and then anything that comes after that first pattern as well. A again, it's very similar to the SQL like operator. So at this point, we actually have a working autocomplete feature, it, but there's a few optimizations that we can make. Currently, we're hitting the database after every key down event, which is very inefficient. It. We can limit this by keeping track of the time between key press events and only running it after a certain amount of time is expired. It. In this case, we'll set it to 200 milliseconds between key presses. A second issue we're running into is we're getting a Fire a database warning that our title attribute is not indexed in the database. We can fix this by going into the Firebase console it and then adding the attributes that we want indexed at any point in the database. In this case, we'll tell Firebase to index the title a tribute on our movies collection. A a that's it for this episode. If you found the video helpful, please like and subscribe. And if you wanna support the channel, consider becoming a pro a subscriber at angularfirebase.com. For just a few bucks a month, you'll get access to exclusive content as well as free 1 on 1 project consulting. A thanks for watching, and I'll see you next time.
In
in
this
this
episode,
episode
we're
we're
going
going
to
to
build
build
an
an
autocomplete
autocomplete
feature
feature
using
using
Angular
angular
4
4
and
and
Firebase.
firebase
Users
users
will
will
be
be
able
able
to
to
type
type
into
into
a
a
search
search
field,
field
and
and
the
the
results
results
will
will
automatically
automatically
be
be
updated
updated
in
in
the
the
field
field
below.
below
In
in
order
order
to
to
demonstrate
demonstrate
this
this
a
a
feature
feature
we
we
have
have
the
the
real
real
time
time
database
database
populated
populated
with
with
a
a
series
series
of
of
movies.
movies
The
the
search
search
function
function
will
will
match
match
string
string
patterns
patterns
to
to
the
the
title
title
in
in
the
the
a
a
database
database
similar
similar
to
to
the
the
SQL
sql
like
like
operator.
operator
Let's
let's
get
get
the
the
app
app
started
started
by
by
building
building
the
the
service.
service
A
a
the
the
service
service
is
is
very
very
simple.
simple
All
all
we
we
needed
needed
to
to
do
do
is
is
return
return
a
a
Firebase
firebase
list
list
observable
observable
a
a
that
that
we
we
can
can
pass
pass
a
a
query
query
to.
to
And
and
this
this
query
query
can
can
take
take
either
either
just
just
a
a
regular
regular
string
string
object
object
or
or
it
it
can
can
take
take
a
a
subject
subject
it
it
from
from
rxjs.
rxjs
Passing
passing
in
in
the
the
subject
subject
allows
allows
you
you
to
to
call
call
next
next
us
us
on
on
the
the
underlying
underlying
subject,
subject
which
which
is
is
a
a
lot
lot
easier,
easier
more
more
intuitive
intuitive
way
way
to
to
filter
filter
that
that
query.
query
It.
it
Now
now
we
we
can
can
jump
jump
into
into
the
the
component.
component
The
the
first
first
thing
thing
we
we
do
do
is
is
build
build
an
an
input
input
field
field
where
where
the
the
user
user
can
can
enter
enter
their
their
search
search
a
a
new.
new
Then
then
we'll
we'll
attach
attach
a
a
function
function
to
to
the
the
key
key
down
down
event,
event
which
which
will
will
run
run
every
every
time
time
the
the
user
user
presses
presses
a
a
key
key
in
in
this
this
field.
field
It.
it
From
from
there,
there
we
we
will
will
populate
populate
an
an
array
array
of
of
movies
movies
and
and
then
then
loop
loop
through
through
them
them
using
using
the
the
ng
ng
4
4
directive.
directive
A,
a
and
and
as
as
a
a
final
final
touch,
touch
we'll
we'll
add
add
the
the
n
n
g
g
f
f
directive
directive
to
to
a
a
div
div
that
that
will
will
only
only
be
be
displayed
displayed
if
if
the
the
movies
movies
array
array
is
is
empty.
empty
A
a
in
in
the
the
component
component
TypeScript,
typescript
we
we
start
start
by
by
injecting
injecting
the
the
service
service
that
that
we
we
built
built
earlier,
earlier
and
and
we
we
also
also
import
import
the
the
RxJS
rxjs
subject
subject
class.
class
A
a
now
now
we
we
declare
declare
a
a
couple
couple
of
of
variables.
variables
The
the
movies
movies
variable
variable
is
is
gonna
gonna
hold
hold
the
the
Firebase
firebase
list
list
observable.
observable
A
a
the
the
start
start
at
at
and
and
end
end
at
at
variables
variables
are
are
both
both
gonna
gonna
hold
hold
subjects,
subjects
and
and
it's
it's
important
important
that
that
these
these
are
are
each
each
their
their
own
own
individual
individual
subject.
subject
During
during
the
the
on
on
init
init
life
life
cycle
cycle
hook,
hook
we'll
we'll
trigger
trigger
the
the
get
get
movies
movies
function
function
from
from
the
the
service,
service
and
and
we'll
we'll
pass
pass
it
it
the
the
2
2
subjects
subjects
what
what
we
we
declared
declared
earlier.
earlier
Then
then
we
we
subscribe
subscribe
to
to
it,
it
and
and
the
the
value
value
that
that
it
it
emits
emits
will
will
be
be
our
our
movies
movies
variable.
variable
A
a
now
now
we
we
can
can
define
define
the
the
search
search
function.
function
We
we
start
start
by
by
using
using
the
the
event
event
variable
variable
to
to
get
get
the
the
actual
actual
value
value
that
that
the
the
user
user
inputted
inputted
into
into
the
the
form,
form
a
a
and
and
then
then
we
we
use
use
that
that
value
value
to
to
set
set
the
the
2
2
subjects.
subjects
For
for
the
the
end
end
at
at
subject,
subject
we
we
add
add
a
a
special
special
Unicode
unicode
character
character
to
to
the
the
end
end
of
of
the
the
string.
string
A
a
this
this
basically
basically
tells
tells
Firebase
firebase
to
to
match
match
the
the
first
first
pattern
pattern
and
and
then
then
anything
anything
that
that
comes
comes
after
after
that
that
first
first
pattern
pattern
as
as
well.
well
A
a
again,
again
it's
it's
very
very
similar
similar
to
to
the
the
SQL
sql
like
like
operator.
operator
So
so
at
at
this
this
point,
point
we
we
actually
actually
have
have
a
a
working
working
autocomplete
autocomplete
feature,
feature
it,
it
but
but
there's
there's
a
a
few
few
optimizations
optimizations
that
that
we
we
can
can
make.
make
Currently,
currently
we're
we're
hitting
hitting
the
the
database
database
after
after
every
every
key
key
down
down
event,
event
which
which
is
is
very
very
inefficient.
inefficient
It.
it
We
we
can
can
limit
limit
this
this
by
by
keeping
keeping
track
track
of
of
the
the
time
time
between
between
key
key
press
press
events
events
and
and
only
only
running
running
it
it
after
after
a
a
certain
certain
amount
amount
of
of
time
time
is
is
expired.
expired
It.
it
In
in
this
this
case,
case
we'll
we'll
set
set
it
it
to
to
200
200
milliseconds
milliseconds
between
between
key
key
presses.
presses
A
a
second
second
issue
issue
we're
we're
running
running
into
into
is
is
we're
we're
getting
getting
a
a
Fire
fire
a
a
database
database
warning
warning
that
that
our
our
title
title
attribute
attribute
is
is
not
not
indexed
indexed
in
in
the
the
database.
database
We
we
can
can
fix
fix
this
this
by
by
going
going
into
into
the
the
Firebase
firebase
console
console
it
it
and
and
then
then
adding
adding
the
the
attributes
attributes
that
that
we
we
want
want
indexed
indexed
at
at
any
any
point
point
in
in
the
the
database.
database
In
in
this
this
case,
case
we'll
we'll
tell
tell
Firebase
firebase
to
to
index
index
the
the
title
title
a
a
tribute
tribute
on
on
our
our
movies
movies
collection.
collection
A
a
a
a
that's
that's
it
it
for
for
this
this
episode.
episode
If
if
you
you
found
found
the
the
video
video
helpful,
helpful
please
please
like
like
and
and
subscribe.
subscribe
And
and
if
if
you
you
wanna
wanna
support
support
the
the
channel,
channel
consider
consider
becoming
becoming
a
a
pro
pro
a
a
subscriber
subscriber
at
at
angularfirebase.com.
angularfirebase.com
For
for
just
just
a
a
few
few
bucks
bucks
a
a
month,
month
you'll
you'll
get
get
access
access
to
to
exclusive
exclusive
content
content
as
as
well
well
as
as
free
free
1
1
on
on
1
1
project
project
consulting.
consulting
A
a
thanks
thanks
for
for
watching,
watching
and
and
I'll
i'll
see
see
you
you
next
next
time.
time
success
The speaker explains how to build an " attending a" feature using Angular 4 and Isabel, including a search field and a search component. They also discuss issues with a search function and how to limit the time between key presses. The speaker explains how to fix a database issue and mentions exclusive content and a referral program.
Autocomplete Search with Angular4 and Firebase
In this episode, we're going to build an autocomplete feature using Angular 4 and Firebase. Users will be able to type into a search field, and the results will automatically be updated in the field below. In order to demonstrate this a feature we have the real time database populated with a series of movies. The search function will match string patterns to the title in the a database similar to the SQL like operator. Let's get the app started by building the service. A the service is very simple. All we needed to do is return a Firebase list observable a that we can pass a query to. And this query can take either just a regular string object or it can take a subject it from rxjs. Passing in the subject allows you to call next us on the underlying subject, which is a lot easier, more intuitive way to filter that query. It. Now we can jump into the component. The first thing we do is build an input field where the user can enter their search a new. Then we'll attach a function to the key down event, which will run every time the user presses a key in this field. It. From there, we will populate an array of movies and then loop through them using the ng 4 directive. A, and as a final touch, we'll add the n g f directive to a div that will only be displayed if the movies array is empty. A in the component TypeScript, we start by injecting the service that we built earlier, and we also import the RxJS subject class. A now we declare a couple of variables. The movies variable is gonna hold the Firebase list observable. A the start at and end at variables are both gonna hold subjects, and it's important that these are each their own individual subject. During the on init life cycle hook, we'll trigger the get movies function from the service, and we'll pass it the 2 subjects what we declared earlier. Then we subscribe to it, and the value that it emits will be our movies variable. A now we can define the search function. We start by using the event variable to get the actual value that the user inputted into the form, a and then we use that value to set the 2 subjects. For the end at subject, we add a special Unicode character to the end of the string. A this basically tells Firebase to match the first pattern and then anything that comes after that first pattern as well. A again, it's very similar to the SQL like operator. So at this point, we actually have a working autocomplete feature, it, but there's a few optimizations that we can make. Currently, we're hitting the database after every key down event, which is very inefficient. It. We can limit this by keeping track of the time between key press events and only running it after a certain amount of time is expired. It. In this case, we'll set it to 200 milliseconds between key presses. A second issue we're running into is we're getting a Fire a database warning that our title attribute is not indexed in the database. We can fix this by going into the Firebase console it and then adding the attributes that we want indexed at any point in the database. In this case, we'll tell Firebase to index the title a tribute on our movies collection. A a that's it for this episode. If you found the video helpful, please like and subscribe. And if you wanna support the channel, consider becoming a pro a subscriber at angularfirebase.com. For just a few bucks a month, you'll get access to exclusive content as well as free 1 on 1 project consulting. A thanks for watching, and I'll see you next time.
The speaker explains how to build an " attending a" feature using Angular 4 and Isabel, including a search field and a search component. They also discuss issues with a search function and how to limit the time between key presses. The speaker explains how to fix a database issue and mentions exclusive content and a referral program.